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申請人鍍鋅產品手冊
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中鋼集團總部大樓
中鋼公司品質政策
以客戶導向為基礎 ,持續研發創新 ,
提供優質環保產品 ,善盡社會責任。
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4 55
品質。技術。服務
連續熱浸鍍鋅線 – 中段
產品手冊
1 1.公司簡介
2 2.產品及服務特色
3 3.新產品介紹 (推薦鋼種 )
5 4.驗證證書
7 5.生產流程及主要設備說明
11 6.最終用途例
12 7.規格資料
12 7.1化學成分及機械性質
23 7.2許可差
29 7.3鍍鋅產品品級區分
30 8.產製範圍
31 9.標記與包裝
32 10.客戶使用注意事項
34 11.單位轉換表
37 12.主要規格對照
38 13.訂貨需註明事項
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廠區綠化
公司簡介
中國鋼鐵股份有限公司(中鋼)位於高雄市,
成立於民國 60年 12月,目前粗鋼年產能
約一千萬公噸,主要產品為鋼板、條鋼、線
材、熱軋、冷軋、電鍍鋅鋼捲、電磁鋼捲及
熱浸鍍鋅鋼捲等鋼品,以及鈦基 /鎳基合金。
產品約 65%內銷,35%外銷,國內市佔率
逾百分之五十,為目前國內最大鋼鐵公司;
外銷主要對象為中國大陸、日本、東南亞。
中鋼是一個勇於創新、執行力強的公司,以
「追求成長,持續節能環保及價值創新,成
為值得信賴的全球卓越鋼鐵企業」為願景,
積極落實「團隊、企業、踏實、求新」四大
精神,以及「增進社會福祉、落實實際績效、
發揮群體力量、講求人性管理」四大經營理
念,除持續深耕鋼鐵本業外,亦致力協助下
游相關產業升級,提昇整體產業國際競爭力。
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中鋼公司為一貫作業鋼廠,民國 71年 6月 30
日第二階段擴建工程竣工後,開始生產冷軋產
品,其後歷經第三、四階段擴建,產品形態包括
冷軋鋼捲、電磁鋼捲、電鍍鋅鋼捲、熱浸鍍鋅鋼
捲及彩色鋼捲,本產品手冊介紹鍍鋅產品,包含
熱浸鍍鋅鋼捲及電鍍鋅鋼捲。
中鋼鍍鋅產品經過長時間不斷開發與精進,產品
已漸趨多樣化,可提供各種加工用途的鍍鋅產
品,例如熱浸鍍鋅一般成形及高強度成形用鋼、
熱浸鍍鋅高強度雙相鋼、高導電耐指紋皮膜用
鋼、單面鍍鋅塗油產品⋯等,可充分滿足產業需
求。
中鋼鍍鋅產品經過從煉鋼、軋鋼至出貨的一貫化
品質管理,內外品質、尺寸精度及加工性均相當
優異。鍍鋅鋼捲具有超平滑表面,可以直接外露
使用,且由於採用二道脫脂設備及全輻射管加熱
方式,並透過嚴密監控加熱爐氣氛,穩定控制鍍
鋅量,因此具有優異的鋅層附著性及耐蝕性。此
外,並提供完全符合無毒害之有機或無機後處理
皮膜,為具備耐蝕、潤滑、銲接或上漆性組合之
產品。
產品及服務特色
中鋼鍍鋅產品通過各項相關驗證,諸如 ISO
9001、ISO/TS16949、JIS MARK 及 IECQ
QC080000(有害物質過程管理系統)等驗
證, 可 符 合 RoHS(Restriction of Hazardous
Substances Directive;危害物質限制指令)及
REACH(Registration, Evaluation, Authorisation
and Restriction of Chemical substances;化學
物質登記、評估、授權和管制法指令)之規定,
並通過知名車廠的高強度等級產品驗證,品質精
良足以信賴,客戶可以安心使用。
中鋼客戶服務,以「贏得客戶感激和信賴,協助
客戶成功」為願景,並以「協助客戶提升技術,
促進鋼鐵產業升級」為宗旨。為加強對客戶的服
務,採多階段、多層次的客戶技術服務模式,主
要特色包含:1.強調售前服務,協助客戶適切用
料和改善加工製程。2.迅速且合理處理客戶抱
怨,並代表客戶推動改善。3.配合產業升級,研
發提供所需之高級鋼品。國內業界普遍肯定中鋼
產品品質穩定可靠,且技術服務快速有效,被列
為購料優先選擇對象。中鋼將持續精進客我技術
能力,以增進鋼鐵製品各產業之國際競爭力。
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高導電耐指紋皮膜鍍鋅用鋼
(電鍍鋅 -EG/熱浸鍍鋅 -CG)本產品具有優良導電性之效能,適用於電腦機殼等 3C產業之零組件,適合需抗電磁波干擾
(EMI)及抗靜電要求之使用環境。
GA潤滑皮膜處理用鋼
本產品為GA汽車用鋼搭配塗覆高潤滑性之化成處理皮膜,可大幅提昇材料衝壓性與模具壽
命,避免衝壓破裂與降低零件損壞機率。
熱浸鍍鋅高強度成形用鋼
(EN HX260YD/HX300YD、JFS JAC390P)
本產品具有高強度、優異的衝壓成形性等特性,為適合使用於汽車鈑金、零組件等高成形性
需求之用途。
新產品介紹
推薦鋼種
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熱浸鍍鋅高強度微合金鋼
(EN HX380LAD/HX420LAD/HX460LAD、JFS JAC590R)本產品具有高強度與低銲接碳當量特性,適合使用於汽車結構及零組件等,可滿足輕量化需求之
用途。
熱浸鍍鋅高強度雙相鋼
(EN HCT780X/HCT980X、JFS JAC780Y/JAC980Y)本產品含有以肥粒鐵為主與部份麻田散鐵之雙相組織,具有超高強度與低銲接碳當量特性,適合
使用於汽車結構及零組件等,可滿足車體結構件輕量化及高安全性需求之用途。
單面電鍍鋅塗油產品
本產品開發係因應機車油箱製作時,單面之鍍鋅面位於油箱內側具有良好之防蝕性,而單面之冷
軋面具優良外觀與銲接特性,可提昇自動輪銲效率與品質需求,以避免銲接過程銲頭與鍍鋅層產
生合金化,減低銲接強度與銲頭壽命。
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驗證證書
ISO 9001 證書 ISO/TS 16949證書
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IECQ證書 JIS MARK 07008證書
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生產流程及主要設備說明
ConsumableAnode RadialOneSideElectroplatingLine
中 鋼 電 鍍 槽 採 用 美 鋼 公 司 (UEC) 的 專 利 設 計(CAROSEL、可溶性陽極 )。為利用電化學反應將鋅原子一層層鍍覆於底材鋼片,形成表面均勻性佳之鍍層。
產線設計特色為規劃兩組電鍍槽分別進行鋼捲上 /下表面電鍍,因此可生產單面電鍍鋅鋼捲。
電鍍鋅區CAROSEL型式電鍍槽 CAROSEL型式鍍槽
利用輥塗式後處理設備,可彈性使用
多種的後處理藥劑,其皮膜厚度控制
性佳。
塗覆區
藉由 ASIS系統輔助檢測,具有下列優點:(1)全面性連續性自動偵測
→可大幅提升缺陷檢出能力。
(2)即時回饋鋼捲產出品質→可強化當線缺陷改善能力。
(3)可回溯並統計鋼捲缺陷資料→利於缺陷調查與追蹤。
ASIS-自動表面缺陷檢測系統 (EGL/CGL)
電氣鍍鋅線 -EGL生產流程圖
銲接 (Zn)
鍍層重量計
消耗性的
陽極
輻射狀
單一
面
電鍍
產線
銲接機
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採全輻射式加熱之垂直退火爐,鋼帶經清洗
完後進入連續退火區,藉由調整不同的退火
溫度及時間,使冷軋後的鋼帶產生再結晶,
並消除殘留內應力,可改善機性;此外,退
火爐內通入保護性氣體當作爐氛,以減少氧
化皮膜,可改善鍍鋅表面品質與鍍鋅後鋅層
之附著性。
連續退火區
用以消除鋼料降伏點,並賦予鋼帶表面所需
之粗糙度,使鋅層表面緻密及改善平坦度。
調質 /整平軋延區
利用輥塗式後處理設備,可彈性使用多種的
後處理藥劑,其皮膜厚度控制性佳。
塗覆區鍍鋅區GA合金化感應加熱器
退火後的鋼帶接著進入連續式熱浸鍍鋅產線
的製程核心 -鍍鋅區,鋅槽中裝盛高溫熔融鋅液 (約 460℃ ),槽體內襯採用陶瓷及感應加熱,容積大溫控穩定,並定期分析鋅浴
成分及撈渣,管制鍍鋅液成分及減少缺陷。
採用高頻感應式加
熱器,有利於合金
化效果及均勻性。
熱浸鍍鋅線 -CGL生產流程圖
第一熱浸鍍鋅線
銲接
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最終用途例 汽車
衛星天線盤及配件
輕鋼架
彩色鋼片 (廠房外牆及屋頂浪板 )
家具及辦公器具
彩色鋼片 (屋頂 )
滑軌
液晶電視背板
廚具及家電外殼
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規格資料
7.1化學成分及機械性質
7.1.1 熱浸鍍鋅
(1)CNS 1244 化學成分表
註:除 SGCD1~SGCD4外,表中各種類之硼 (B)元素含量須< 0.0008%。
註:上表種類符號之彎曲角度需為 1800。
種類符號 C Mn P S
SGCC 0.15以下 0.80以下 0.05以下 0.05以下
SGCD1 0.06以下 0.50以下 0.04以下 0.04以下
SGCD2 0.02以下 0.40以下 0.03以下 0.03以下
SGCD3 0.02以下 0.40以下 0.03以下 0.03以下
SGCD4 0.02以下 0.40以下 0.03以下 0.03以下
SGC340 0.25以下 1.70以下 0.20以下 0.05以下
SGC400 0.25以下 1.70以下 0.20以下 0.05以下
SGC440 0.25以下 2.00以下 0.20以下 0.05以下
SGC490 0.30以下 2.00以下 0.20以下 0.05以下
SGC490M 0.30以下 2.00以下 0.20以下 0.05以下
種類符號
彎曲之內側間隔 (為試片標稱厚度之倍數 )
標稱厚度 (t) mm
t< 1.6 1.6≦ t< 3.0 3.0≦ t
附著量符號 附著量符號 附著量符號
Z27以下
Z35Z37
Z45Z60
Z27以下
Z35Z37
Z45Z60
Z27以下
Z35Z37
Z45Z60
SGCC 1 1 2 1 2 2 2 2 2
SGCD1 1 ─ ─ 1 ─ ─
─ ─ ─SGCD2
0(密貼) ─ ─
0(密貼) ─ ─SGCD3
SGCD4
SGC340 1 1 2 1 1 2 2 2 3
SGC400 2 2 2 2 2 2 3 3 3
SGC440
3 3 3 3 3 3 3 3 3SGC490
SGC490M
化學成分表
彎曲性
單位:wt %
本規格資料中,若屬標準規格,內容以各協會公告之最新版本為準;若屬中鋼規格,本公司保留變更內容之權利。
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註:1. (*)表示 SGCD 4鋼捲於生產後六個月內,加工時不得有伸張應變痕之缺陷發生。
2. 括號內之數值供參考。
3. 1N/mm2=1MPa。
種類符號
降伏點或
降伏強度N/mm2
抗拉強度
N/mm2
伸長率 %
試片及方向
標稱厚度 (t) mm
0.25≦t<0.40
0.40≦t<0.60
0.60≦t< 1.0
1.0≦t< 1.6
1.6≦t< 2.5 2.5≦ t
SGCC (205以上 ) (270以上) ─ ─ ─ ─ ─ ─
No.5平行軋延方向
SGCD1 ─ 270以上 ─ 34以上 36以上 37以上 38以上 ─
SGCD2 ─ 270以上 ─ 36以上 38以上 39以上 40以上 ─
SGCD3 ─ 270以上 ─ 38以上 40以上 41以上 42以上 ─
SGCD4(*) ─ 270以上 ─ 40以上 42以上 43以上 44以上 ─
SGC340 245以上 340以上 20以上 20以上 20以上 20以上 20以上 20以上
No.5平行軋延方向或垂直軋延方向
SGC400 295以上 400以上 18以上 18以上 18以上 18以上 18以上 18以上
SGC440 335以上 440以上 18以上 18以上 18以上 18以上 18以上 18以上
SGC490 365以上 490以上 16以上 16以上 16以上 16以上 16以上 16以上
SGC490M 410以上 490以上 12以上 12以上 12以上 12以上 12以上 12以上
拉伸試驗特性
(2)JIS G3302化學成分表
種類符號 C Mn P S
SGCC 0.15以下 0.80以下 0.05以下 0.05以下
SGCD1 0.12以下 0.60以下 0.04以下 0.04以下
SGCD2 0.10以下 0.45以下 0.03以下 0.03以下
SGCD3 0.08以下 0.45以下 0.03以下 0.03以下
SGCD4 0.06以下 0.45以下 0.03以下 0.03以下
SGC340 0.25以下 1.70以下 0.20以下 0.05以下
SGC400 0.25以下 1.70以下 0.20以下 0.05以下
SGC440 0.25以下 2.00以下 0.20以下 0.05以下
SGC490 0.30以下 2.00以下 0.20以下 0.05以下
化學成分表 單位:wt %
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規
格
資
料
註:1. 所有種類符號之彎曲角度需為 1800。
2. 試片採用 JIS No.3,試片方向為平行軋延方向。
種類符號
彎曲之內側間隔 (為試片標稱厚度之倍數 )
標稱厚度 (t) mm
t< 1.6 1.6≦ t< 3.0 3.0≦ t
附著量符號 附著量符號 附著量符號
Z27以下
Z35Z37
Z45Z60
Z27以下
Z35Z37
Z45Z60
Z27以下
Z35Z37
Z45Z60
SGCC 1 1 2 1 2 2 2 2 2
SGCD1 1 ─ ─ 1 ─ ─
─ ─ ─SGCD2
0(密貼 ) ─ ─
0(密貼 ) ─ ─SGCD3
SGCD4
SGC340 1 1 2 1 1 2 2 2 3
SGC400 2 2 2 2 2 2 3 3 3
SGC4403 3 3 3 3 3 3 3 3
SGC490
彎曲性
註:1. (*)表示 SGCD 4鋼捲於生產後六個月內,加工時不得有伸張應變痕之缺陷發生。
2. 括號內之數值供參考。
3. 1N/mm2=1MPa。
種類符號
降伏點或
降伏強度N/mm2
抗拉強度
N/mm2
伸長率 %
試片及方向
標稱厚度 (t) mm
0.25≦t<0.40
0.40≦t<0.60
0.60≦t< 1.0
1.0≦t< 1.6
1.6≦t< 2.5 2.5≦ t
SGCC (205以上) (270以上) ─ ─ ─ ─ ─ ─
JIS No.5平行軋延方向
SGCD1 ─ 270以上 ─ 34以上 36以上 37以上 38以上 ─
SGCD2 ─ 270以上 ─ 36以上 38以上 39以上 40以上 ─
SGCD3 ─ 270以上 ─ 38以上 40以上 41以上 42以上 ─
SGCD4(*) ─ 270以上 ─ 40以上 42以上 43以上 44以上 ─
SGC340 245以上 340以上 20以上 20以上 20以上 20以上 20以上 20以上JIS No.5平行軋延方向或垂直軋延方向
SGC400 295以上 400以上 18以上 18以上 18以上 18以上 18以上 18以上
SGC440 335以上 440以上 18以上 18以上 18以上 18以上 18以上 18以上
SGC490 365以上 490以上 16以上 16以上 16以上 16以上 16以上 16以上
拉伸試驗特性
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註:1. 當碳含量超出 0.02%時,生產者可添加「鈦」以作為穩定元素,惟應小於「3.4N+1.5S」或 0.025%之兩者較小者。
2. 用途上如要求脫氧鋼時,訂購者可選擇 Total Al含量為 0.01%以上之「CS」或「FS」鋼種。
3. 生產者可視需要以真空脫氣處理、化學穩定元素或兩者均使用之方式生產供料。
4. 當碳含量在 0.02%以下時,生產者可添加「釩」、「鈮」或「鈦」作為穩定元素,此時「釩」與「鈮」之添加上限為 0.10%,鈦之添加上限則
為 0.15%。
5. 為避免碳含量低於 0.02%,「CS」與「FS」鋼種另規定 Type B因應。
6. 不得以化學元素穩定方式處理供料。
7. 必須以化學元素穩定方式處理供料。
(3)ASTM A653
種類符號 C Mn P S Al Cu Ni Cr Mo V Nb Ti (1)
CS Type A2,3,4 0.10以下
0.60以下
0.030以下
0.035以下
─0.25以下
0.20以下
0.15以下
0.06以下
0.008以下
0.008以下
0.025以下
CS Type B2,5 0.02~0.15
0.60以下
0.030以下
0.035以下
─0.25以下
0.20以下
0.15以下
0.06以下
0.008以下
0.008以下
0.025以下
CS Type C2,3,4 0.08以下
0.60以下
0.100以下
0.035以下
─0.25以下
0.20以下
0.15以下
0.06以下
0.008以下
0.008以下
0.025以下
FS Type A2,6 0.10以下
0.50以下
0.020以下
0.035以下
─0.25以下
0.20以下
0.15以下
0.06以下
0.008以下
0.008以下
0.025以下
FS Type B2,5 0.02~0.10
0.50以下
0.020以下
0.030以下
─0.25以下
0.20以下
0.15以下
0.06以下
0.008以下
0.008以下
0.025以下
DDS Type A3,4 0.06以下
0.50以下
0.020以下
0.025以下
0.01以上
0.25以下
0.20以下
0.15以下
0.06以下
0.008以下
0.008以下
0.025以下
DDS Type C7 0.02以下
0.50以下
0.020~0.100
0.025以下
0.01以上
0.25以下
0.20以下
0.15以下
0.06以下
0.10以下
0.10以下
0.15以下
EDDS7 0.02以下
0.40以下
0.020以下
0.020以下
0.01以上
0.25以下
0.20以下
0.15以下
0.06以下
0.10以下
0.10以下
0.15以下
化學成分表
註:1. 產品厚度小於 0.51mm時,其伸長率規格值可降低 4%,且產品厚度大於 0.50mm且小於 0.71mm時,其伸長率規格值可降低 2%。
2. 鍍鋅鐵合金產品,其塑性應變比可降低 0.2,應變硬化指數可降低 0.01,產品厚度大於 1.50mm時,其塑性應變比規格值可降低 0.2。
3. 產品厚度小於 0.71mm時,其塑性應變比規格值可降低 0.2,應變硬化指數可降低 0.01。
4. 拉伸試驗試片須為橫向試片。
(4)EN 10346 成形用低碳鋼
種類符號C Si Mn P S Ti 降伏
強度N/mm2
抗拉強度
N/mm2
伸長率 (1)
min.(%)塑性應變比
min.應變硬化指數
min.max.(wt%)
DX51D 0.18
0.50
1.20 0.12
0.045 0.30
─ 270~500 22 ─ ─
DX52D
0.12 0.60 0.10
140~300 270~420 26 ─ ─
DX53D 140~260 270~380 30 ─ ─
DX54D 120~220
260~350
36 1.6(2) 0.18
DX56D 120~180 39 1.9(2)(3) 0.21(2)(3)
DX57D 120~170 41 2.1(2)(3) 0.22(2)(3)
化學成分與機械性質表
單位:wt %
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註:1. 產品厚度小於 0.51mm時,其伸長率規格值可降低 4%,大於 0.50mm且小於 0.71mm時,其伸長率規格值可降低 2%。
2. 產品厚度大於 1.50mm時,其塑性應變比規格值可降低 0.2。
3. 鋅鐵合金產品,其伸長率規格值可降低 2%,塑性應變比規格值可降低 0.2。
4. 拉伸試驗試片須為橫向試片。
(5)EN 10346 成形用高強度碳鋼
種類符號
C Si Mn P S Ti Nb T.Al
降伏強度N/mm2
抗拉強度N/mm2
伸長率 (1)(3)
min.(%)
烘烤硬化能min.
(Mpa)
塑性應變比(2)(3) min.
應變硬化指數min.
max.(wt%) wt%
HX180YD 0.01 0.20 0.70 0.06 0.025 0.12 0.09 ≦ 0.1 180~240
330~390 34 ─ 1.7 0.18
HX220YD 0.01 0.20 0.90 0.08 0.025 0.12 0.09 ≦ 0.1 220~280
340~420 32 ─ 1.5 0.17
HX260YD 0.01 0.25 1.30 0.10 0.025 0.12 0.09 ≦ 0.1 260~320
380~440 30 ─ 1.4 0.16
HX300YD 0.015 0.30 1.60 0.10 0.025 0.12 0.09 ≦ 0.1 300~360
390~470 27 ─ 1.3 0.15
HX180BD 0.10 0.50 0.70 0.06 0.025 0.12 0.09 ≦ 0.1 180~240
290~360 34 35 1.5 0.16
HX220BD 0.10 0.50 0.70 0.08 0.025 0.12 0.09 ≦ 0.1 220~280
320~400 32 35 1.2 0.15
HX260BD 0.10 0.50 0.80 0.10 0.025 0.12 0.09 ≦ 0.1 260~320
360~440 28 35 ─ ─
HX300BD 0.11 0.50 0.80 0.12 0.025 0.12 0.09 ≦ 0.1 300~360
400~480 26 35 ─ ─
HX260LAD 0.11 0.50 0.60 0.03 0.025 0.12 0.09 ≧ 0.015 260~330
350~430 26 ─ ─ ─
HX300LAD 0.11 0.50 1.00 0.03 0.025 0.15 0.09 ≦ 0.1 300~380
380~480 23 ─ ─ ─
HX340LAD 0.11 0.50 1.00 0.03 0.025 0.15 0.09 ≧ 0.015 340~420
410~510 21 ─ ─ ─
HX380LAD 0.11 0.50 1.40 0.03 0.025 0.15 0.09 ≧ 0.015 380~480
440~560 19 ─ ─ ─
HX420LAD 0.11 0.50 1.40 0.03 0.025 0.15 0.09 ≧ 0.015 420~520
470~590 17 ─ ─ ─
化學成分與機械性質表
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7.1.2 電鍍鋅
(1) JIS G3313
(2)CSC 電鍍鋅
註:1. 指 SECC中有抗拉強度與伸長率要求之規定者。
2. 指 SECF與 SECG鋼帶於製造後 6個月內,不得產生伸張應變痕缺陷。
3. 無法取得 5號試片時,試片之形狀與伸長率要求值可於買賣雙方協議後決定。
種類符號降伏強度N/mm2
抗拉強度N/mm2
伸長率 %
試片及方向厚度 (t)mm
0.40≦t< 0.60
0.60≦t< 1.0
1.0≦t< 1.6
1.6≦t< 2.5
SECC ─ ─ ─ ─ ─ ─
JIS No.5平行軋延方向 (3)
SECCT(1) ─ 270以上 34以上 36以上 37以上 38以上
SECD ─ 270以上 36以上 38以上 39以上 40以上
SECE ─ 270以上 38以上 40以上 41以上 42以上
SECF(2) ─ 270以上 40以上 42以上 43以上 44以上
SECG(2) ─ 270以上 42以上 44以上 45以上 46以上
種類符號降伏強度N/mm2
抗拉強度N/mm2
伸長率 %
試片及方向厚度 (t)mm
0.40≦t< 0.60
0.60≦t< 1.0
1.0≦t< 1.6
1.6≦t< 2.5
SECC1─ ─ ─ ─ ─ ─
JIS No.5平行軋延方向
SECC2
SECD ─ 270以上 36以上 38以上 39以上 40以上
SECE ─ 270以上 38以上 40以上 41以上 42以上
SECF ─ 270以上 40以上 42以上 43以上 44以上
拉伸試驗特性
拉伸試驗特性
註:內側間隔為試片標稱厚度之倍數
種類符號 彎曲角度 內側間隔 試片與方向
SECC
1800 0(密貼 ) JIS No.3平行軋延方向
SECD
SECE
SECF
SECG
彎曲性
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7.1.3 鍍鋅量、化成處理、鋅花與塗油
7.1.3.1 熱浸鍍鋅
(1) CNS 1244
附著量符號 Z06 Z08 Z09 Z10 Z12 Z14 Z18 Z20 Z22 Z25 Z27 Z30
鍍鋅量 (g/m2) 60 80 90 100 120 140 180 200 220 250 275 305
相當鍍層厚度 (mm) 0.010 0.013 0.014 0.015 0.018 0.021 0.027 0.029 0.032 0.036 0.040 0.043
附著量符號 Z35 Z37 Z45 Z50 Z55 Z60 F04 F06 F08 F10 F12 F18
鍍鋅量 (g/m2) 350 370 450 500 550 600 40 60 80 100 120 180
相當鍍層厚度 (mm) 0.050 0.053 0.064 0.071 0.078 0.085 0.007 0.010 0.012 0.015 0.018 0.026
鍍鋅量對應之鍍層厚度表
化成處理之種類及符號表
化成處理種類 符 號
不處理 M
磷酸鹽處理 P
鉻酸鹽處理 C
鉻酸鹽耐指紋處理 F
無鉻磷酸鹽處理 NP
無鉻鈍化處理 NC
無鉻耐指紋處理 NF
塗油之種類及其符號表
塗油種類 符 號
塗油 O
不塗油 X
註:鋼捲的塗油符號依上表之規定,若無特別指定,通常非合金化鍍層不予塗油,合金化鍍層則予塗油。
鍍層表面鋅花處理之種類及符號表
鍍層表面鋅花處理種類 符號 備考
微細鋅花(minimized spangle) Z 抑制結晶成長而形成之細小鋅花加表面調質處理
正常鋅花(regular spangle) R 正常結晶過程形成之鋅花
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(2) JIS G3302
附著量符號 Z06 Z08 Z10 Z12 Z14 Z18 Z20 Z22 Z25 Z27
鍍鋅量 (g/m2) 60 80 100 120 140 180 200 220 250 275
相當鍍層厚度 (mm) 0.013 0.017 0.021 0.026 0.029 0.034 0.040 0.043 0.049 0.054
附著量符號 Z35 Z37 Z45 Z60 F04 F06 F08 F10 F12
鍍鋅量 (g/m2) 350 370 450 600 40 60 80 100 120
相當鍍層厚度 (mm) 0.064 0.067 0.080 0.102 0.008 0.013 0.017 0.021 0.026
鍍鋅量對應之鍍層厚度表
化成處理之種類及符號表
塗油之種類及其符號表
化成處理種類 符 號
不處理 M
磷酸鹽處理 P
鉻酸鹽處理 C
無鉻鈍化處理 NC
塗油種類 符 號
塗油 O
不塗油 X
註:鋼捲的塗油符號依上表之規定,若無特別指定,通常非合金化鍍層不予塗油,合金化鍍層則予塗油。
註:若需上表以外的化成處理,可由買賣雙方協議之,例如:無鉻抗指紋處理 (B)。
鍍層表面鋅花處理之種類及符號表
鍍層表面鋅花處理種類 符號 備考
微細鋅花(minimized spangle) Z 抑制結晶成長而形成之細小鋅花加表面調質處理
正常鋅花(regular spangle) R 正常結晶過程形成之鋅花
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英制 公制
附著量符號 鍍鋅量 (oz/ft2) 附著量符號 鍍鋅量 (g/m2)
G01 ─ Z001 ─
G30 0.30 Z90 90
G40 0.40 Z120 120
G60 0.60 Z180 180
G90 0.90 Z275 275
G100 1.00 Z305 305
G115 1.15 Z350 350
G140 1.40 Z450 450
G165 1.65 Z500 500
G185 1.85 Z550 550
G210 2.10 Z600 600
G235 2.35 Z700 700
G300 3.00 Z900 900
G360 3.60 Z1100 1100
A01 ─ ZF001 ─
A25 0.25 ZF75 75
A40 0.40 ZF120 120
A60 0.60 ZF180 180
鍍鋅量表
(3) ASTM A653
化成處理之種類及符號表
塗油之種類及其符號表
化成處理種類 符 號
不處理 M
鉻酸鹽處理 C
塗油種類 符 號
塗油 O
不塗油 X
註:鋼捲的塗油符號依上表之規定,若無特別指定,通常非合金化鍍層不予塗油,合金化鍍層則予塗油。
註:若需上表以外的化成處理,可由買賣雙方協議之
鍍層表面鋅花處理之種類及符號表
鍍層表面鋅花處理種類 符號 備考
微細鋅花(minimized spangle) Z 抑制結晶成長而形成之細小鋅花加表面調質處理
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(4) EN 10346
附著量符號 Z100 Z140 Z200 Z225 Z275 Z350 Z450 Z600 ZF100 ZF120
鍍鋅量 (g/m2) 100 140 200 225 275 350 450 600 100 120
附著量符號對應之鍍鋅量
化成處理之種類及符號表
化成處理種類 符 號
不處理 U
封孔處理 S
磷酸鹽處理 P
化學鈍化處理 C
註:若需上表以外的化成處理,可由買賣雙方協議之,例如:無鉻抗指紋處理 (B)。
目前封孔與磷酸鹽處理,並未產製。
塗油之種類及其符號表
塗油種類 符 號
塗油 O
不塗油 X
註:鋼捲的塗油符號依上表之規定,若無特別指定,通常非合金化鍍層不予塗油,合金化鍍層則予塗油。
鍍層表面鋅花處理之種類及符號表
鍍層表面鋅花處理種類 符號 備考
微細鋅花(minimized spangle) M 抑制結晶成長而形成之細小鋅花加表面調質處理
正常鋅花(regular spangle) N 正常結晶過程形成之鋅花
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表面品質之種類及符號表
表面品質種類 符 號
一般表面品質 A
改良表面品質 B
最佳表面品質 C
7.1.3.2 電鍍鋅
JIS G3313/CSC規格化成處理之種類及符號表
塗油之種類及其符號表
化成處理種類 符 號
不處理 ─
無鉻抗指紋處理 A/A
塗油種類 符 號
塗油 O
不塗油 X
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寬度 (w) 寬度許可差
w≦ 1500 +70
1500< w +100
寬 度 (w) 弧形度許可差
630≦ w 任取 2000長度為 2以下
7.2許可差
7.2.1 CNS 1244與 JIS G3302熱浸鍍鋅鋼捲厚度許可差表
7.2.2 CNS 1244與 JIS G3302熱浸鍍鋅鋼捲寬度許可差
7.2.4 CNS 1244與 JIS G3302熱浸鍍鋅鋼捲弧形度許可差
7.2.3 CNS 1244與 JIS G3302熱浸鍍鋅鋼捲平坦度許可差
單位:mm
單位:mm
單位:mm
單位:mm
厚度許可差
630≦ w< 1000 1000≦ w< 1250 1250≦ w< 1600 1600≦ w
0.25≦ t< 0.40 ±0.05 ±0.05 ±0.06 ─
0.40≦ t< 0.60 ±0.06 ±0.06 ±0.07 ±0.08
0.60≦ t< 0.80 ±0.07 ±0.07 ±0.07 ±0.08
0.80≦ t< 1.00 ±0.07 ±0.08 ±0.09 ±0.10
1.00≦ t< 1.25 ±0.08 ±0.09 ±0.10 ±0.12
1.25≦ t< 1.60 ±0.10 ±0.11 ±0.12 ±0.14
1.60≦ t< 2.00 ±0.12 ±0.13 ±0.14 ±0.16
2.00≦ t< 2.50 ±0.14 ±0.15 ±0.16 ±0.18
標稱厚度 (t)
寬度 (w)
平坦度許可差 (max.)
全波狀 邊緣波狀 (1) 中央波狀 (2)
w< 1000 12 8 6
1000≦ w< 1250 15 9 8
1250≦ w< 1600 15 11 8
1600≦ w 20 13 9
寬度 (w)
種類
註:厚度測量之位置須距邊 25mm以上。
註:1. 邊緣波狀係指於平板及鋼捲寬度方向邊緣所產生之波狀。
2. 中央波狀係指於平板及鋼捲中央部份所產生之波狀。
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7.2.5 ASTM A924M熱浸鍍鋅鋼捲厚度許可差
7.2.6 ASTM A924M熱浸鍍鋅鋼捲寬度、平坦度、弧形度許可差
單位:mm
單位:mm
單位:mm
單位:mm
單位:mm
厚度許可差
w≦ 1500 w> 1500
t≦ 0.40 ±0.08 ±0.08
0.40< t≦ 1.00 ±0.10 ±0.10
1.00< t≦ 1.50 ±0.13 ±0.13
1.50 < t≦ 2.00 ±0.15 ±0.15
2.00 < t≦ 2.40 ±0.30 ±0.34
訂單厚度 (t)
寬度 (w)
平坦度許可差 (max.)
t≦ 1.0 1.0<t
w≦ 900 10 8
900< w≦ 1500 15 10
1500< w≦ 1880 20 15
寬度 (w)
厚度 (t)
厚度 (t) 寬度 (w)
平坦度許可差 (max.)
強度等級 N/mm2(max.)
275 340 380~410 480 550
t≦ 1.5
w≦ 900 15 20 22 25 30
900< w≦ 1500 25 30 32 35 38
1500< w 35 38 40 45 48
1.5<tw≦ 1500 15 20 22 25 30
1500< w 25 30 32 35 38
寬度 (w) 寬度許可差
上 限 下 限
800≦ w< 1200 5 0
1200≦ w< 1500 6 0
1500 ≦ w< 1880 8 0
長度 弧形度許可差
任意 2000 長 5以下
以標稱厚度 (Nominal Thickness)
平坦度許可差
平坦度許可差
寬度許可差
弧形度許可差
註:鍍鋅鋼捲厚度含底材與鍍鋅層,其厚度測量位置須距邊 25mm以上。
註:1. 本表不適用於結構用鋼(SS)與高強度低合金鋼(HSLA)。
2. 除非客戶特別指定,否則平坦度許可差以本表為檢驗標準。
註:1. 本表適用於結構用鋼(SS)與高強度低合金鋼(HSLA)。
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7.2.7 EN10143熱浸鍍鋅鋼捲厚度許可差
單位:mm
單位:mm
w≦ 1200 1200< w≦ 1500 1500< w
0.30< t≦ 0.40 ±0.04 ±0.05 ±0.06
0.40< t≦ 0.60 ±0.04 ±0.05 ±0.06
0.60< t≦ 0.80 ±0.05 ±0.06 ±0.07
0.80< t≦ 1.00 ±0.06 ±0.07 ±0.08
1.00< t≦ 1.20 ±0.07 ±0.08 ±0.09
1.20< t≦ 1.60 ±0.10 ±0.11 ±0.12
1.60< t≦ 2.00 ±0.12 ±0.13 ±0.14
2.00< t≦ 2.40 ±0.14 ±0.15 ±0.16
標稱厚度 (t)寬度 (w)
w≦ 1200 1200< w≦ 1500 1500< w
0.30< t≦ 0.40 ±0.05 ±0.06 ±0.07
0.40< t≦ 0.60 ±0.05 ±0.06 ±0.07
0.60< t≦ 0.80 ±0.06 ±0.07 ±0.08
0.80< t≦ 1.00 ±0.07 ±0.08 ±0.09
1.00< t≦ 1.20 ±0.08 ±0.09 ±0.11
1.20< t≦ 1.60 ±0.11 ±0.13 ±0.14
1.60< t≦ 2.00 ±0.14 ±0.15 ±0.16
2.00< t≦ 2.40 ±0.16 ±0.17 ±0.18
標稱厚度 (t)寬度 (w)
以標稱厚度 (Nominal Thickness)
以標稱厚度 (Nominal Thickness)
註:1. 鍍鋅鋼捲厚度含底材與鍍鋅層,其厚度測量位置須距邊 40mm以上。
2. 本表適用於一般軟鋼與降伏強度低於 (不含 )260MPa。
註:1. 鍍鋅鋼捲厚度含底材與鍍鋅層,其厚度測量位置須距邊 40mm以上。
2. 本表適用於 260 MPa≦降伏強度< 360 MPa和 DX51D鋼種。
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規
格
資
料
單位:mm
w≦ 1200 1200< w≦ 1500 1500< w
0.30< t≦ 0.40 ±0.05 ±0.06 ±0.07
0.40< t≦ 0.60 ±0.06 ±0.07 ±0.08
0.60< t≦ 0.80 ±0.07 ±0.08 ±0.09
0.80< t≦ 1.00 ±0.08 ±0.09 ±0.11
1.00< t≦ 1.20 ±0.10 ±0.11 ±0.12
1.20< t≦ 1.60 ±0.13 ±0.14 ±0.16
1.60< t≦ 2.00 ±0.16 ±0.17 ±0.19
2.00< t≦ 2.40 ±0.18 ±0.20 ±0.21
標稱厚度 (t)寬度 (w)
以標稱厚度 (Nominal Thickness)
註:1. 鍍鋅鋼捲厚度含底材與鍍鋅層,其厚度測量位置須距邊 40mm以上。
2. 本表適用於 360 MPa≦降伏強度< 420 MPa。
單位:mm
w≦ 1200 1200< w≦ 1500 1500< w
0.30< t≦ 0.40 ±0.06 ±0.07 ±0.08
0.40< t≦ 0.60 ±0.06 ±0.08 ±0.09
0.60< t≦ 0.80 ±0.07 ±0.09 ±0.11
0.80< t≦ 1.00 ±0.09 ±0.11 ±0.12
1.00< t≦ 1.20 ±0.11 ±0.13 ±0.14
1.20< t≦ 1.60 ±0.15 ±0.16 ±0.18
1.60< t≦ 2.00 ±0.18 ±0.19 ±0.21
2.00< t≦ 2.40 ±0.21 ±0.22 ±0.24
標稱厚度 (t)寬度 (w)
以標稱厚度 (Nominal Thickness)
註:1. 鍍鋅鋼捲厚度含底材與鍍鋅層,其厚度測量位置須距邊 40mm以上。
2. 本表適用於 420 MPa≦降伏強度< 900 MPa。
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7.2.8 EN10143熱浸鍍鋅鋼捲寬度、平坦度與弧形度許可差
7.2.9 JIS G3313電鍍鋅鋼捲厚度許可差
單位:mm
單位:mm
寬度 (w) 寬度許可差
上 限 下 限
w≦ 1200 5 0
1200< w≦ 1500 6 0
1500< w≦ 1800 7 0
1800< w 8 0
長度 弧形度許可差 (max.)
L≦ 2000 0.25%
2000< L 5 mm
寬度許可差
弧形度許可差
單位:mm
單位:mm
平坦度許可差 (max.)
t<0.70 0.70≦ t< 3.00
w< 1200 10 8
1200≦ w< 1500 12 10
1500≦ w 17 15
寬度 (w)
厚度 (t)
平坦度許可差 (max.)
t<0.70 0.70≦ t< 3.00
w< 1200 13 10
1200≦ w< 1500 15 13
1500≦ w 20 19
寬度 (w)
厚度 (t)
平坦度許可差
平坦度許可差
註:本表適用於一般軟鋼與降伏強度低於 260 MPa。
註:本表適用於 260 MPa≦降伏強度< 360 MPa和 DX51D鋼種。
單位:mm
630≦ w< 1000 1000≦ w< 1250 1250≦ w< 1600
0.40≦ t< 0.60 ±0.05 ±0.05 ±0.06
0.60≦ t< 0.80 ±0.06 ±0.06 ±0.06
0.80≦ t< 1.00 ±0.06 ±0.07 ±0.08
1.00≦ t< 1.25 ±0.07 ±0.08 ±0.09
1.25≦ t< 1.60 ±0.09 ±0.10 ±0.11
1.60≦ t< 2.00 ±0.11 ±0.12 ±0.13
2.00≦ t< 2.50 ±0.13 ±0.14 ±0.15
標稱厚度 (t)寬度 (w)
註:厚度量測位置係指鋼帶正常部份,於寬度方向距邊緣 15mm以上內側之任何位置
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格
資
料
寬度 (w) 寬度許可差
w< 1250 +70
1250≦ w +100
7.2.10 JIS G3313電鍍鋅鋼捲寬度、平坦度與弧形度許可差 單位:mm
單位:mm
平坦度許可差 (max.)
全波狀 邊緣波狀 (1) 中央波狀 (2)
w< 1000 12 8 6
1000≦ w< 1250 15 9 8
1250≦ w< 1600 15 11 8
1600≦ w 20 13 9
寬度 (w)
種類
註:1. 邊緣波狀係指於鋼帶寬度方向邊緣所產生之波狀。
2. 中央波狀係指於鋼帶中央部份所產生之波狀。
平坦度許可差
單位:mm 弧形度許可差
寬度 (w) 弧形度許可差
630≦ w 任取 2000長度為 2以下
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鋼 片 分 類 品 級 區 分 常 見 規 格 典 型 用 途
成形加工用For Forming Fabrication
一般商用品級 (CQ)
CNS 1244 SGCCJIS G3302 SGCCASTM A653 CS、FS TYPEEN 10346 DX51D,DX52D
3C產品機殼、彩色鋼片底材、甲板、樓層板、LQF用途、OA家具與櫥櫃、建築材料
衝壓及深衝品級(DQ,DDQ,EDDQ)
CNS 1244 SGCD1~3JIS G3302 SGCD1~3ASTM A653 DS,DDSEN 10346 DX53D~DX57DEN 10346 HX180~300YD
家電用品、汽車內、外板金及零件組、冷氣機機殼、冰箱機殼及底座、洗衣機底座、電腦硬碟機殼、汽車用料等
結構用For Structural Uses 結構用品級(SQ)
CNS 1244 SGC~XXXJIS G3302 SGC~XXXASTM A653 SS-XXEN 10346 HX260~420 LAD
滑軌、導管、風管、自動販賣機機殼及零件組、鋼製門、建築材料、汽車用料等
鋼 片 分 類 品 級 區 分 常 見 規 格 典 型 用 途
成形加工用For Forming Fabrication
一般商用品級 (CQ) JIS G3313 SECCCSC SECC1, SECC2
家電用品、3C產品機殼、LCD-TV背板等
衝壓及深衝品級(DQ、DDQ、EDDQ)
JIS G3313 SECD、SECE、SECF、SECGCSC SECD、SECE、SECF
家電用品、馬達機殼等
7.3鍍鋅產品品級區分
7.3.1 熱浸鍍鋅品級區分
7.3.2 電氣鍍鋅品級區分
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產製範圍
8.1 可產製產品及最小質量
8.2 可產製尺寸範圍
產 品 別 最 小 質 量
熱浸鍍鋅鋼捲 3 公噸以上 /每捲
電氣鍍鋅鋼捲 3 公噸以上 /每捲
單位:mm
產品種類 厚度範圍 寬度範圍
熱浸鍍鋅 0.30~2.60 780~1830
電鍍鋅 0.40~2.00 865~1525
註:1.以上設備能力僅供參考,詳細產品接單尺寸範圍請參考中鋼網站 (www.csc.com.tw):客戶服務→產品製造→可接單尺寸 之公告為準。
2.如有對規格、尺寸與鍍層種類、鍍鋅層重量以及相關塗覆皮膜處理等有特殊要求時,請洽營業或技術服務單位協商。
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標記與包裝
9.1 鍍鋅產品標記
1 2
3456789
10
11
9.2 鍍鋅產品包裝
內部包裝 外部包裝
防水防銹紙
內徑灰紙板
外周灰紙板
外徑金屬護角
外周保護鋼片 內徑保護鋼片
內徑金屬護角
鋼帶
1 2 3 4 5 6 7 8 9 10 11
中鋼商標
中鋼名稱
品名 規格 尺寸鑑別代號
淨質量 總質量塗覆代號
品類 爐號
熱浸鍍鋅鋼捲 V V V V V V V V V V V
電鍍鋅鋼捲 V V V V V V V V V V
標示項目
產品別
防水防銹紙
PE膜灰紙板 紙護角 保護鋼片 金屬護角
外周 側邊 內徑 外徑 內徑 外周 側邊 內徑 外徑 內徑
熱浸鍍鋅鋼捲 V V V V V V
電鍍鋅鋼捲 V V V V V V V V
包裝材料
產品別
外徑紙護角
內徑紙護角 側邊灰紙板
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客戶使用注意事項
(1)防銹
鍍鋅鋼片如果未經過適當處理,將容易在表面銹蝕,一般產出時都會依照指定施以適當的防銹油或後
處理,出貨時會有完整包裝加以保護,但是在鋼捲儲存及使用過程中,因為環境因素會造成鋼捲或鋼
片容易銹蝕,尤其儲存環境在高濕度及溫度發生劇烈變化時,特別容易發生結露問題,此時需要特別
注意結露的防止及水的排除。另外,大氣中的灰塵或酸性空氣,也很容易在鋼片表面形成銹蝕的起始
點,因此儲存或加工過程必須排出這些因素,才能獲得良好的表面品質。
(2)時效
一般低碳鋼因為具有固溶碳氮,因此如果未經過適當處理,加工過程會產生所謂的伸張應變痕或雞爪
痕,所以鋼廠會對這些產品先施以適當的調質軋延,將降伏伸長消除。然而,隨著儲存時間拉長後,
降伏點伸長又會出現,我們稱為時效問題,時效主要與鋼中的固溶碳氮、存放溫度與時間有關。對於
這些鋼種應該盡快使用,並採用先進先出管理。
(3)皮膜處理鋼捲加工後去汙處理
鍍鋅鋼片表面經常會施以耐指紋皮膜處理,作為短暫性防銹處理,此種鋼料在經過加工後,會再進行
以溶劑或脫脂液進行脫脂、去污、除銹清洗及皮膜防銹等表面處理,這些處理均可能造成塗膜變色及
破壞情況,因此朝低藥劑濃度、低處理溫度、及短時間作業較有利,具體建議如下:
a.脫脂處理液,建議酸鹼度 10>PH值>7.0,並儘量以接近室溫處理,時間不宜過長。
b.避免以極性有機溶劑處理,採用非極性溶劑擦拭時必須輕擦。
c.如需要烘乾,烘乾溫度<180℃,烘乾時間<15分鐘。
(4)塗裝
藉由塗裝進一步保護鍍鋅製品或提升其美觀性與功能性,是常見的應用方式之一。塗料種類的選擇與
塗裝方式的採用,須審慎考量產品的形狀、應用與友善環境的要求。
─簡易塗裝模式
表面清洗→塗裝→烘烤
在洗淨的底材表面上直接塗裝,塗料的選擇應注意到與後處理層的相容性。
─耐久性塗裝模式
表面清洗 →化學處理→ 塗裝 →烘烤
適用長久使用與防蝕要求高的產品,應用的底材通常是冷軋或鍍鋅塗油鋼板等。在洗淨的底材表面與
化學藥劑產生全面性鈍化反應後再塗裝,鈍化膜可避免塗料直接接觸活潑的金屬,塗膜具備長期的穩
定性以保護產品。常見的化學處理為磷酸鋅處理,緻密的磷酸鋅結晶可提升底漆對底材的附著力,多
層次的塗裝,應注意到與塗料間的相容性。
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─ 塗裝失效的因素
(a) 不充分的清洗:常見的情形是鋼片表面殘留油脂與污染物,這些異物使塗料未真正黏住底材,導致塗膜附著
力低而失效。最好能了解防銹油、潤滑油等的特性,再慎選清洗劑與清洗方式,並注意鋼捲儲存條件與塗裝
作業環境,即可有助於改善不充分的清洗。
(b) 不適當的化學處理:如果化學處理鈍化膜不足或不均,一旦外界腐蝕因子接觸到金屬,活潑的金屬即很容易
氧化,氧化物便會破壞底漆對底材的附著力。另,如果鈍化膜鬆散、結晶粗化,或受處理液中的殘渣污染,
也會使塗膜附著力不足。最好能了解化學處理液的反應特性,注意到不同鋼片的表面差異,並適當調整處理
液的濃度、溫度與處理時間,以及重視處理後的表面清洗。
(c) 不合適的塗料:塗料的選擇應考量產品最終用途及使用環境,並採取適當的塗裝程序,才能確保塗料能充分
潤濕處理後的底材表面,與塗裝後有相容性,同時對環境的腐蝕因子才有阻抗能力。
(5)銲接
(a)鍍鋅鋼片因鍍鋅層阻抗值較低,相較於同材質之冷軋鋼片,需提供更高的銲接電流或更長的銲接時間,
才能獲得足夠的電阻熔接熱量。
(b)鍍鋅鋼片容易在銲接時發生電極沾附鍍鋅層現象,電極耐久性能較冷軋鋼片低,因此使用過程中應適時
進行電極研磨及替換。
(c)若能調適正確的銲接參數值 (銲接時間及銲接電流 ),鍍鋅鋼片仍具有與冷軋鋼片相近之可銲電流範圍
(Weld Lobe Curve)與銲接強度。
(d)以電阻點銲製程為例,欲進行鍍鋅鋼片 (GA)之銲接時,請參酌以下銲接參數建議表之設定,以確保穩
定之銲接品質。
(e)欲進行銲核之破壞性試驗,請參閱 JIS Z3136及 Z3137規範。
電阻點銲之銲接參數建議表
鋼片厚度範圍 (mm)
電極壓力(kgf)
電極尖端直徑 (mm)
銲前夾持時間 (cyc)
銲接時間(cyc)
銲接電流(kA)
銲後夾持時間 (cyc)
0.30~0.49 170 5 > 30 9 飛爆電流 -0.4 2
0.50~0.69 180 5 > 30 10 飛爆電流 -0.4 2
0.70~0.89 210 6 > 30 11 飛爆電流 -0.4 2
0.90~1.09 230 6 > 30 12 飛爆電流 -0.4 3
1.10~1.29 250 6 > 30 14 飛爆電流 -0.4 3
1.30~1.49 270 6 > 30 16 飛爆電流 -0.4 3
1.50~1.69 300 6 > 30 18 飛爆電流 -0.4 4
1.70~1.89 340 6 > 30 20 飛爆電流 -0.4 4
1.90~2.09 380 6 or 8 > 30 22 飛爆電流 -0.4 4
2.10~2.29 420 6 or 8 > 30 26 飛爆電流 -0.4 6
2.30~2.49 450 8 > 30 28 飛爆電流 -0.4 6
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單位轉換表
長 度
ft inch mm m
1 12 304.8 0.3048
0.08333 1 25.4 0.0254
0.003281 0.03937 1 0.001
強 度
ksi(=1000psi) psi kgf/mm2 N/mm2(Mpa)
1 1000 0.70307 6.89476
0.001 1 7.0307×10-4 6.89476×10-3
1.42233 1422.33 1 9.80665
0.145038 145.038 1.101972 1
能 量( 衝 擊 值 )
ft-lbf kgf-m N-m (=Joule)
1 0.138255 1.35582
7.23301 1 9.80665
0.737562 0.101972 1
質 量 1 kg = 2.20462 lb
力 1 kgf = 9.80665 N
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HR30T與 HRB硬度換算表
HR15T與 HRB硬度換算表
HR30T 換算 HRB HR30T 換算 HRB HR30T 換算 HRB HR30T 換算 HRB
35.0 28.1 47.0 46.0 59.0 63.9 71.0 81.9
36.0 29.6 48.0 47.5 60.0 65.4 72.0 83.4
37.0 31.1 49.0 49.0 61.0 66.9 73.0 84.9
38.0 32.5 50.0 50.5 62.0 68.4 74.0 86.4
39.0 34.0 51.0 52.0 63.0 69.9 75.0 87.9
40.0 35.5 52.0 53.5 64.0 71.4 76.0 89.4
41.0 37.0 53.0 55.0 65.0 72.9 77.0 90.8
42.0 38.5 54.0 56.5 66.0 74.4 78.0 92.3
43.0 40.0 55.0 58.0 67.0 75.9 79.0 93.8
44.0 41.5 56.0 59.5 68.0 77.4 80.0 95.3
45.0 43.0 57.0 60.9 69.0 78.9 81.0 96.8
46.0 44.5 58.0 62.4 70.0 80.4 82.0 98.3
HR15T 換算 HRB HR15T 換算 HRB HR15T 換算 HRB HR15T 換算 HRB
70.0 28.8 76.0 47.3 82.0 65.8 88.0 84.3
70.5 30.3 76.5 48.8 82.5 67.3 88.5 85.8
71.0 31.9 77.0 50.4 83.0 68.8 89.0 87.3
71.5 33.4 77.5 51.9 83.5 70.4 89.5 88.9
72.0 35.0 78.0 53.4 84.0 71.9 90.0 90.4
72.5 36.5 78.5 55.4 84.5 73.5 90.5 92.0
73.0 38.0 79.0 56.5 85.0 75.0 91.0 93.5
73.5 39.6 79.5 58.1 85.5 76.6 91.5 95.0
74.0 41.1 80.0 59.6 86.0 78.1 92.0 96.6
74.5 42.7 80.5 61.1 86.5 79.6 92.5 98.1
75.0 44.2 81.0 62.7 87.0 81.2 93.0 99.7
75.5 45.7 81.5 64.2 87.5 82.7
註:此換算表為引述 ASTM E140表 2,若未記錄於 ASTM表中的硬度,則使用內插法計算而得。
註:此換算表為引述 ASTM E140表 2,若未記錄於 ASTM表中的硬度,則使用內插法計算而得。
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HV與 HRB硬度換算表
HV 換算 HRB HV 換算 HRB HV 換算 HRB HV 換算 HRB
85 41.0 145 76.6 210 93.4 330 ─
90 48.0 150 78.7 220 95.0 340 (108.0)
95 52.0 155 79.9 230 96.7 350 ─
100 56.2 160 81.7 240 98.1 360 (109.0)
105 59.4 165 83.1 250 99.5 370 ─
110 62.3 170 85.0 260 (101.0) 380 (110.0)
115 65.0 175 86.1 270 (102.0)
120 66.7 180 87.1 280 (103.5)
125 69.5 185 88.8 290 (104.5)
130 71.2 190 89.5 300 (105.5)
135 73.2 195 90.7 310 ─
140 75.0 200 91.5 320 (107.0)
註:此換算表為引述 SAE J417表 2,若未記錄於 SAE表中的硬度,則使用內插法計算而得。
括弧內之數值已超出 HRB之範圍,僅提供參考。
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3733373
主要規格對照 CNS 1244 JIS G3302 JFS A3011 ASTM A653 EN 10346
軟鋼
SGCC SGCC CS A,B,C DX51D
SGCC SGCC JAC270C DX52D
SGCD1 SGCD1 JAC270D DX53D
SGCD2 SGCD2
SGCD3 SGCD3 JAC270E DDS A DX54D
SGCD4 SGCD4 JAC270F EDDS DX56D
烘烤硬化鋼 JAC270H HX180BD
JAC340H HX220BD
高深衝用鋼
JAC340P HX220YD,HX220PD
HX260YD
JAC440P HX300YD
一般高強度鋼
JAC340W
JAC390W
JAC440W
高降伏比鋼
HX260LAD
HX300LAD
SGC 440 SGC 440 HX340LAD
JAC440R HSLAS50(340)
HX380LAD
HX420LAD
JAC590R
低降伏比鋼
JAC590Y HDT600X
JAC780Y HDT780X
JAC980Y HDT980X
結構用鋼
SS 33(230) S220GD
SGC340 SGC340 SS 37(255)
SGC400 SGC400 SS 40(275) S280GD
SGC490 SGC490
上述表列 CNS、JIS、JFS、ASTM、EN鋼種對照表,僅近似、非等同。
主要規格對照
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3838
訂貨需註明事項
需 提 供 項 目 例
1
規格名稱:代號及鋼種
JIS G3302 SGCC ZSBX UE
鍍層種類 ZZ(GI), ZF(GA)
鍍鋅層厚度 Z08, Z12, F06, F08..等
化成處理種類 M, C, P, NC
表面品質
一般級 (GP)
外露級 (GE)
非外露級 (UE)
2 上油或不上油 不上油
3 尺寸 (厚×寬×長 (或鋼捲 )) 1.0mm×1219mm×Coil
4 鋼捲尺寸 (內徑,外徑 ) ID 508mm,OD 1650mm以下
5 質 量最大單重 10t以下
訂單質量 45t
6 最終用途 製管用
7 特殊要求 (有需求時提出 ) 硬度 HRB 55以下
一 . 本產品手冊僅供參考,規格部份請以各規格協會出版之規格書為準,標記與包裝內容則以本公司實際狀況為準,若有變動恕不另行通知;
訂貨時,可產製規格與尺寸請再確認詳細狀況。
二 . 最小訂購量及交貨期,請洽本公司各營業銷售組。
三 . 若您未能於手冊內尋得所需資料,請逕向下列單位洽詢。
1. 營業銷售處 產 品
銷售一組TEL:886-7-3371035FAX:886-7-5372550
鋼板、熱軋鋼板
銷售二組TEL:886-7-3371242FAX:886-7-5372551
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熱軋粗鋼捲、熱軋鋼捲、熱軋鋼片、熱軋酸洗塗油鋼捲
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冷軋及電鍍鋅鋼品
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熱、冷軋汽車料、熱浸鍍鋅及電磁鋼捲
2. 冶金技術服務組TEL:07-8021335, 0800-741135, 07-8021111轉 2201, 3909, 2574, 5380, 5598FAX:07-8039553
3. 冶金規範及試驗組TEL:07-8021111轉 5797FAX:07-8051292
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1
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2 32 3
China Steel Building (Group Headquarters)
The quality policy of China Steel Corporation
China Steel Corporation, based-on customer orientation, will incessantly innovate, research & develop to provide excellent and eco-friendly products, and consequently fulfi ll our responsibility to society.
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4 55
#2 CGL – middle sect ion
A NAME FOR QUALITY, TECHNOLOGY AND SERVICE
PRODUCT MANUAL
1 1. Brief Introduction
2 2. Product and Service Features
3 3. Introduction of New Products
5 4. Certifi cation
7 5. Manufacturing Process and Major Equipments
11 6. Application Examples
12 7. Specifi cation
12 7.1 Chemical Composition and Mechanical Properties
20 7.2 Tolerances
26 7.3 Classifi cation of Quality
27 8. Product Availability
28 9. Marking and Packing
29 10. Precautions for use
32 11. Conversion Tables
35 12. Comparison of Specifi cation
36 13. Ordering Information
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1
Plant Greening
BRIEF IN
TRODUCTIO
N
China Steel Corporation (CSC), located at
Kaohsiung, Taiwan was founded in December
1971. With annual capacity (in terms of crude steel)
around 10 million tonnes, CSC produces a range
of products that includes plates, bars, wire rods,
hot and cold rolled coils, electrogalvanized coils,
electrical steel coils, hot-dip galvanized coils, and Ti/
Ni-base alloy. The domestic market takes roughly
65% of CSC's production and the exports take the
remaining 35%. CSC is the largest steel company
in Taiwan, enjoying more than 50% of the domestic
market. Major export destinations are Mainland
China, Japan and Southeast Asia.
CSC is very active in innovation, and has strong
capability to put the innovations into practice. The
company's vision is:〝We aspire to be a trustworthy
steel company of global distinction that pursues
growth, environmental protection, energy saving and
value-innovation〞. CSC actively puts into practice
its corporate values of 〝teamwork, entrepreneurial
approach, down-to-earthiness and pursuit of
innovation〞, as well as its operations beliefs of 〝
promotion of social well-being, result orientation,
implementation of teamwork, and emphasis on
employees' self-realization.〞 CSC keeps deepening
the roots for its core business in steel, and devoted
to integrate the related downstream industries
to foster healthy development and international
competitiveness of Taiwan's steel related industry.
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2
China Steel Corporation (CSC) is an integrated steel producer. After its phase II expansion construction was completed on June 30, 1982, CSC launched its production of Cold Rolling Mill. Subsequently, CSC went through to complete its phases III and IV expansion constructions. Products include cold-rolled coils, electrical steel coils, electro-galvanized coils, hot-dip galvanized coils and color coils. This manual introduces Zn-coated steel (cold rolled base) products only.
Through unceasing developments and improvements over the years, CSC's Zn-coated steel products have been gradually diversified. They are available for various processing uses and have been suffi cient to meet the requirements of industries, such as hot-dip galvanized steels with general formability, high-strength-improved formability and high strength dual-phase, high conductivity anti-fi nger printed electrolytic zinc-coated steel coils, galvanized products with one-side coating and oiling, etc.
Through the integrated quality management of iron making, steelmaking and steel rolling to the release and shipping of fi nished products, CSC's Zn-coated steel products are excellent in their inner and outer quality, dimensional accuracy and processing properties. Zn-coated coils have ultra smooth surface which can be directly used in exposedness, as well as have excellent adhesion and corrosion resistance of galvanized layers owing to the adoption of two-stage degreasing equipment and full radiant tube heating mode, and close monitor of furnace atmosphere for stably controlling the galvanized quantities. Moreover, CSC provides customers with organic or inorganic post-treatment fi lms completely complied with non-toxic matter, which are products with mixed good corrosion-resistance, lubrication, weldability and paintability.
CSC's Zn-coated steel products have been approved by certifications such as ISO 9001, ISO/TS16949, JIS MARK and IECQ QC080000 (Hazardous Substance Process Management), etc. They meet the regulations of RoHS (Restriction of Hazardous Substances Directive) and REACH(Registration, Evaluation, Authorisation and Restriction of Chemical substances), and are verifi ed through certifi cation of high-strength grades by the well-known carmakers. The approvals and qualifications are testament to CSC's commitment to reliable and superior products, thus providing its customers a peace of mind.
The vision of CSC's customer services is to gain customers' appreciation and trust and help them be successful, and the aim of that is to promote customers' technology and upgrade the steel industry. In order to enhance the customer services, CSC adopts multi-step and multi-level service pattern which is characterized by emphasizing on (1) the pre-sale services for helping customers to choose suitable materials and improve their production processes; (2) handling complains and claims from customers with proper and rapid manner, and conducting customers the corresponding improvements to the root-causes; (3) providing customers with the developed high-grade materials to meet the upgrade policy for domestic industries.
The stable and reliable quality of CSC's steel products have gained the acceptance of domestic industries widely, and CSC has also been selected as the first priority provider to purchase their needed steel materials owing to CSC's quick and efficient technical services. CSC will continue to improve customer services and the technical technologies both for customers and CSC itself to promote steel-use industries' international competitiveness.
PRODUCT AN
D SER
VICE FEATU
RES
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3
High Conductive AFP (Anti-Finger Print) Galvanized Steel (EG/CG) Product with excellent conductivity, it is applicable for computer case, electrical appliances, or other
3C industries' components. Suitable for anti-EMI(Electromagnetic Interference) and anti-electrostatic
requirements of the circumstances.
GA Lubricating Coated Steel Automotive steel with high lubricity coating fi lm with chemical treatment, it can signifi cantly improve the
formability, prolong the mould's life, and avoid stamping rupture.
High Strength Galvannealed Steel (EN HX260YD/HX300YD、JFS JAC390P)High strength and good stamping formability, suitable for automotive metal and components which
demand high formability purposes.
INTR
ODUCTIO
N O
F NEW
PRODUCTS
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4
High-Strength Low Alloy Galvanized/Galvannealed Steel (EN HX380LAD / HX420LAD/ HX460LAD、JFS JAC590R)High strength and low carbon equivalent. Those steel grades will be suitable for use in automotive structures
and components, and meet the demand for light-weight purposes.
High-Strength Dual Phase Galvanized/Galvannealed Steel(EN HCT780X / HCT980X、JFS JAC780Y/JAC980Y)This dual phase steel contains mainly ferrite and partly martensite, with very high strength and low carbon
equivalent welding characteristics. Those steel grades will be suitable for use in automotive structures and
components, and meet the demand for light-weight body and high security applications.
Single-sided Electro-Galvanized Oiled ProductsIt will be developed for the locomotive fuel tank production. The single-sided galvanized surface located
inside the tank has good corrosion resistance, while the other cold-rolled side has excellent appearance and
weldability. It enhances the effi ciency and quality, and prevents alloying between welding head and zinc coating
which could lead to lower welding strength and life of welding head.
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5
CER
TIFICATIO
N
ISO 9001 Certifi cate ISO/TS 16949 Certifi cate
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IECQ Certifi cate JIS MARK 07008 Certifi cateJIJIJIJISSSS MAMAMAMARKRKRKRK 00007070707008080808 CCCCerererertitititififififi cacacacatetetete
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7 8
ConsumableAnode RadialOneSideElectroplatingLine
CSC is using UEC's patent: CAROSEL. Zinc is coated layer-by-layer and uniformly through electrochemical reactions. The unique feature of CAROSEL is to use 4 individual tanks (for each side of strip), thus single-sided electroplated galvanizing coils are applicable.
Electroplating with CAROSEL
CAROSELConductor Roll
Multiple reagent can be used to post-treatment coating by coating roll. The thickness of films can be well controlled.
Coating Area
(Automated Surface Inspection System)The advantages of ASIS are as follows:(1) Overall consecutive automatic inspection→Signifi cantly
enhance the inspection(2) Real-time quality feedback→ Instant defect mending(3) Traceable and statistical data→ Convenient for further
investigate.
ASIS (EGL/CGL)
MAN
UFAC
TURING PR
OCESS AN
D M
AJOR EQ
UIPM
ENTS
Manufacturing Processes of Electroplated Galvanizing Line(EGL)
AS-ColdRolled Strip Welding Cleaning Pickling Electro-
Plating(Zn)Passivation or Special coating
OilingEG
Products
Thickness gauge
Entry section
Cleaning section Pickling section
#1 Plating section(Bottom side)
#2 Plating section(Top side) Coating weight gauge
Anti-fi nger printing coating section
Post-treatment section Delivery section
Inspection section(ASIS/Thickness/ Width gauge)
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9
SP
EC
IFICATIO
NS
PE
CIFIC
AATION
9 10
Annealed strips will then enter the Zinc bath where Zinc bath is at 460℃ . The composition of Zinc bath is periodically analyzed and cleaned, and its temperature is steadily controlled.
Zinc-coating Bath
Eliminating the yield point of steel, endowing the strip with surface roughness, and improving the fl atness.
Skin-pass Mill & Tension Leveler
Multiple reagent can be used to post-treatment coating by coating roll. The thickness of fi lms can be well controlled.
Post-treatment Coating Area
Continuous Annealing Furnace
Galvannealing Furnace
During the annealing process, cold-rolled strips will re-crystallize and eliminate residual inner stress to improve mechanical properties. The protective gas in the furnace will also help zinc adhesion to the surface of strips.
High-frequency induced heater is applied to enhance GA alloying and its uniformity.
GA Holding & cooling Annealing section Entry section
Manufacturing Processes of Continuous Hot Dip Galvanizing Line (CGL)
AS-ColdRolled Strip Welding Cleaning Annealing Hot-Dip
Galvanizing
Galvannealing
Skin-pass rolling / Tension Levelling
Passivationor
Special CoatingOiling
CG Products
Vertical & Horizontal Inspection (ASIS)
Delivery section
Post-treatment section Special coating treatment
Skin-pass Mill
Pre-Cleaning & Cleaning section
Pay-off reelWelder & thickness gauge
Galvannealing(IH)
Zinc potAir Knife
Tension Leveller
Tension reel
Side trimmerThickness gauge
Oiler
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1111111
APPLICATIO
N EXAM
PLES
Automobile
Antenna
Ceiling suspension frame and Steel frame
Color sheet(Siding and roofi ng)
Furniture
Color sheet (Roof)
Slide
TV back plate
Kitchenware and Home Appliance
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1212
SPECIFIC
ATION
Chemical composition
7.1Chemical Compositions and Mechanical Properties 7.1.1 Hot-Dip Galvanized Steel
(1)JIS G3302
NOTE:1. The bending angle shall be 1800 for any grade of steel.
2. The test piece shall be JIS No.3, and one shall be taken from the sample in rolling direction.
Symbol of grade C Mn P S
SGCC 0.15max. 0.80max. 0.05max. 0.05max.
SGCD1 0.12max. 0.60max. 0.04max. 0.04max.
SGCD2 0.10max. 0.45max. 0.03max. 0.03max.
SGCD3 0.08max. 0.45max. 0.03max. 0.03max.
SGCD4 0.06max. 0.45max. 0.03max. 0.03max.
SGC340 0.25max. 1.70max. 0.20max. 0.05max.
SGC400 0.25max. 1.70max. 0.20max. 0.05max.
SGC440 0.25max. 2.00max. 0.20max. 0.05max.
SGC490 0.30max. 2.00max. 0.20max. 0.05max.
Symbolof grade
Internal spacing of bend(number of sheets of nominal thickness)
Nominal thickness(t) mm
t< 1.6 1.6≦ t< 3.0 3.0≦ t
Coating mass symbol Coating mass symbol Coating mass symbol
Z06 toZ27
Z35Z37
Z45Z60
Z06 toZ27
Z35Z37
Z45Z60
Z06 toZ27
Z35Z37
Z45Z60
SGCC 1 1 2 1 2 2 2 2 2
SGCD1 1 ─ ─ 1 ─ ─
─ ─ ─SGCD2
0(Flat on itself)
─ ─ 0(Flat on itself)
─ ─SGCD3
SGCD4
SGC340 1 1 2 1 1 2 2 2 3
SGC400 2 2 2 2 2 2 3 3 3
SGC4403 3 3 3 3 3 3 3 3
SGC490
Bend test conditions
Unit:wt %
The contents of this catalog are for reference only. Custom
ers are urged to consult the specifi cations published by the corresponding associations. Inform
ations of the available CSC
steel grades, as shown herein m
ay be updated w
ithout notice to comply w
ith actual production situations.
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13
NOTE:1. (*)For the sheet and coil of SGCD4, the stretcher strain shall not be generated when working is performed during 6 months after manufacturing.
2. Values in parentheses are shown for reference.
3. 1N/mm2=1MPa.
Symbol of grade
Yield pointor proof stressN/mm2
Tensile strengthN/mm2
Elongation % Test pieceand
direction oftension test
Nominal thickness (t) mm
0.25≦t<0.40
0.40≦t<0.60
0.60≦t< 1.0
1.0≦t< 1.6
1.6≦t< 2.5 2.5≦ t
SGCC (205min.) (270min.) ─ ─ ─ ─ ─ ─
JIS No.5 in rolling direction
SGCD1 ─ 270min. ─ 34min. 36min. 37min. 38min. ─
SGCD2 ─ 270min. ─ 36min. 38min. 39min. 40min. ─
SGCD3 ─ 270min. ─ 38min. 40min. 41min. 42min. ─
SGCD4(*) ─ 270min. ─ 40min. 42min. 43min. 44min. ─
SGC340 245min. 340min. 20min. 20min. 20min. 20min. 20min. 20min. JIS No.5 in rolling direction or perpendicularto the rollingdirection
SGC400 295min. 400min. 18min. 18min. 18min. 18min. 18min. 18min.
SGC440 335min. 440min. 18min. 18min. 18min. 18min. 18min. 18min.
SGC490 365min. 490min. 16min. 16min. 16min. 16min. 16min. 16min.
Tension test characteristics
(2) ASTM A653 Chemical composition table
NOTE:1. For steels containing 0.02% carbon or more, titanium is permitted at the producer's option, to the lesser of 3.4N+1.5S or 0.0025%.
2. When deoxidized steel is required for the application, the purchaser has the option to order CS and FS to a min. of 0.01% total aluminum.
3. Steel is permitted to be fi nished as a vacuum degassed or chemically stabilized steel or both, at the producer's option.
4. For carbon levels less than or equal to 0.02%, vanadium, columbium or combinations thereof are permitted to be used as stabilizing elements
at the producer's option. In such case, the applicable limit for vanadium and columbium shall be 0.10% max and the limit for titanium shall
be 0.15% max.
5. For CS and FS, specify Type B to avoid carbon levels below 0.02%.
6. Shall not be furnished as stabilized steel.
7. Shall be furnished as stabilized steel.
Symbol of grade C Mn P S Al Cu Ni Cr Mo V Nb Ti(1)
CS Type A2,3,4 0.10max.
0.60max.
0.030max.
0.035max.
─0.25max.
0.20max.
0.15max.
0.06max.
0.008max.
0.008max.
0.025max.
CS Type B2,5 0.02~0.15
0.60max.
0.030max.
0.035max.
─0.25max.
0.20max.
0.15max.
0.06max.
0.008max.
0.008max.
0.025max.
CS Type C2,3,4 0.08max.
0.60max.
0.100max.
0.035max.
─0.25max.
0.20max.
0.15max.
0.06max.
0.008max.
0.008max.
0.025max.
FS Type A2,6 0.10max.
0.50max.
0.020max.
0.035max.
─0.25max.
0.20max.
0.15max.
0.06max.
0.008max.
0.008max.
0.025max.
FS Type B2,5 0.02~0.10
0.50max.
0.020max.
0.030max.
─0.25max.
0.20max.
0.15max.
0.06max.
0.008max.
0.008max.
0.025max.
DDS Type A3,4 0.06max.
0.50max.
0.020max.
0.025max.
0.01min.
0.25max.
0.20max.
0.15max.
0.06max.
0.008max.
0.008max.
0.025max.
DDS Type C7 0.02max.
0.50max.
0.020~0.100
0.025max.
0.01min.
0.25max.
0.20max.
0.15max.
0.06max.
0.10max.
0.10max.
0.15max.
EDDS7 0.02max.
0.40max.
0.020max.
0.020max.
0.01min.
0.25max.
0.20max.
0.15max.
0.06max.
0.10max.
0.10max.
0.15max.
Unit:wt%
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NOTE:1. Decrease min. elongation values apply for product thickness t≦ 0.5mm (minus 4 units) and 0.5mm< t≦ 0.7mm (minus 2 units).2. For GA products, r90-value reduced by 0.2 apply, and the min. n90-value reduced by 0.01 apply, and for t> 1.5mm, the min. r90-value reduced by 0.2 apply.3. For t≦ 0.70mm, the min. r90-value reduced by 0.2 apples and the min. n90-value reduced by 0.01 apply.4. The value of the tension test apply for transverse pieces.
(3) EN 10346 Low Carbon Steel for Cold Forming
Symbol of
grade
C Si Mn P S Ti Yield strengthN/mm2
TensilestrengthN/mm2
Elongation(1)
min.(%)Plastic strainratio min.
Strain hardening exponent min.max.(wt%)
DX51D 0.18
0.50
1.20 0.12
0.045 0.30
─ 270~500 22 ─ ─
DX52D
0.12 0.60 0.10
140~300 270~420 26 ─ ─
DX53D 140~260 270~380 30 ─ ─
DX54D 120~220
260~350
36 1.6(2) 0.18
DX56D 120~180 39 1.9(2)(3) 0.21(2)(3)
DX57D 120~170 41 2.1(2)(3) 0.22(2)(3)
Chemical composition and mechanical properties
NOTE:1. Decrease min. elongation values apply for product thickness t≦ 0.5mm (minus 4 units) and for 0.5mm< t≦ 0.7mm (minus 2 units).
2. For t> 1.5mm, the min. r90-value reduced by 0.2 apply.
3. For GA products, elongation value could minus 2 units, r90-value reduced by 0.2 apply.
4. The value of the tension test apply for transverse pieces.
(4) EN 10346 High Strength Steel for Cold Forming
Symbolof
grade
C Si Mn P S Ti Nb T.AlYield
strengthN/mm2
Tensile strengthN/mm2
Elongation(1)(3)
min.(%)
BakedhardeningIndex min.(MPa)
Plastic strain
ratio(2)(3) min
Strain hardening exponentmin.
max.(wt%) wt%
HX180YD 0.01 0.20 0.70 0.06 0.025 0.12 0.09 ≦ 0.1 180~240
330~390 34 ─ 1.7 0.18
HX220YD 0.01 0.20 0.90 0.08 0.025 0.12 0.09 ≦ 0.1 220~280
340~420 32 ─ 1.5 0.17
HX260YD 0.01 0.25 1.30 0.10 0.025 0.12 0.09 ≦ 0.1 260~320
380~440 30 ─ 1.4 0.16
HX300YD 0.015 0.30 1.60 0.10 0.025 0.12 0.09 ≦ 0.1 300~360
390~470 27 ─ 1.3 0.15
HX180BD 0.10 0.50 0.70 0.06 0.025 0.12 0.09 ≦ 0.1 180~240
290~360 34 35 1.5 0.16
HX220BD 0.10 0.50 0.70 0.08 0.025 0.12 0.09 ≦ 0.1 220~280
320~400 32 35 1.2 0.15
HX260BD 0.10 0.50 0.80 0.10 0.025 0.12 0.09 ≦ 0.1 260~320
360~440 28 35 ─ ─
HX300BD 0.11 0.50 0.80 0.12 0.025 0.12 0.09 ≦ 0.1 300~360
400~480 26 35 ─ ─
HX260LAD 0.11 0.50 0.60 0.03 0.025 0.12 0.09≧0.015 260~330
350~430 26 ─ ─ ─
HX300LAD 0.11 0.50 1.00 0.03 0.025 0.15 0.09 ≦ 0.1 300~380
380~480 23 ─ ─ ─
HX340LAD 0.11 0.50 1.00 0.03 0.025 0.15 0.09≧0.015 340~420
410~510 21 ─ ─ ─
HX380LAD 0.11 0.50 1.40 0.03 0.025 0.15 0.09≧0.015 380~480
440~560 19 ─ ─ ─
HX420LAD 0.11 0.50 1.40 0.03 0.025 0.15 0.09≧0.015 420~520
470~590 17 ─ ─ ─
Chemical composition and mechanical properties
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7.1.2 Electrolytic Galvanized Steel
(1) JIS G3313
NOTE:1. Applied to SECC when the purchaser has designated a tension test for it.
2. Sheet and coil of SECF and SECG shall be free from stretcher strain occuring during working for 6 rnonths following the manufacture.
3. Where sampling of No.5 test piece is impracticable, shape and elongation of test piece shall be as agreed between the purchaser and the
manufacturer.
Symbol of grade
Yield point or proof stressN/mm2
Tensile strengthN/mm2
Elongation %
Test piece and direction
Nominal thickness(t)mm
0.40≦t< 0.60
0.60≦t< 1.0
1.0≦t< 1.6
1.6≦t< 2.5
SECC ─ ─ ─ ─ ─ ─
JIS No.5rolling
direction(3)
SECCT(1) ─ 270min. 34min. 36min. 37min. 38min.
SECD ─ 270min. 36min. 38min. 39min. 40min.
SECE ─ 270min. 38min. 40min. 41min. 42min.
SECF(2) ─ 270min. 40min. 42min. 43min. 44min.
SECG(2) ─ 270min. 42min. 44min. 45min. 46min.
Tension test characteristics
NOTE:Internal spacing of bend is the multiple of the test piece nominal thickness.
Symbol of grade Bend angle Internal spacing of bend Test piece and direction
SECC
1800 0(Flat on itself) JIS No.3 rolling direction
SECD
SECE
SECF
SECG
Bend test conditions
(2)CSC Electrolytic Galvanized Steel
Symbol of grade
Yield point or proof stressN/mm2
Tensile strengthN/mm2
Elongation %
Test piece and direction
Nominal thickness(t)mm
0.40≦t< 0.60
0.60≦t< 1.0
1.0≦t< 1.6
1.6≦t< 2.5
SECC1─ ─ ─ ─ ─ ─
JIS No.5rolling direction
SECC2
SECD ─ 270min. 36min. 38min. 39min. 40min.
SECE ─ 270min. 38min. 40min. 41min. 42min.
SECF ─ 270min. 40min. 42min. 43min. 44min.
Tension test characteristics
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7.1.3 Coating mass, Chemical treatment, Spangle and Oiling
7.1.3.1 Hot-Dip Galvanized Steel
(1)JIS G3302
Coating mass symbol Z06 Z08 Z10 Z12 Z14 Z18 Z20 Z22 Z25 Z27
Coating mass (g/m2) 60 80 100 120 140 180 200 220 250 275
Equivalent coating thickness (mm) 0.013 0.017 0.021 0.026 0.029 0.034 0.040 0.043 0.049 0.054
Coating mass symbol Z35 Z37 Z45 Z60 F04 F06 F08 F10 F12
Coating mass (g/m2) 350 370 450 600 40 60 80 100 120
Equivalent coating thickness (mm) 0.064 0.067 0.080 0.102 0.008 0.013 0.017 0.021 0.026
Equivalent coating thickness
Type and symbol of chemical treatment
Type and symbol of oiling
Type of chemical treatment Symbol
Untreated M
Phosphate treatment P
Chromate treatment C
Chromate-free treatment NC
Type of oiling Symbol
Oiled O
Unoiled X
NOTE:The type and the symbol of the sheets, corrugated sheets and coils shall be given in the table below. Unless otherwise specifi ed, the non-alloyed
coating shall be unoiled and the alloyed coating shall be oiled.
NOTE:The type of chemical treatment other than the above table may be agreed upon between the purchaser and the manufacturer, like chromate-free anti-fi nger print treatment(B).
Type and symbol of surface finish for non-alloyed coating
Type of coating surface finish Symbol Remark
Minimized spangle Z A coating having the spangles obtained by restricting normal spangle formation to a minimum.
Regular spangle R A coating having the spangles as a result of the unrestricted growth of zinc crystals during normal solidification.
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Inch-Pound Units SI Units
Coating mass symbol Coating mass (oz/ft2) Coating mass symbol Coating mass (g/m2)
G01 ─ Z001 ─
G30 0.30 Z90 90
G40 0.40 Z120 120
G60 0.60 Z180 180
G90 0.90 Z275 275
G100 1.00 Z305 305
G115 1.15 Z350 350
G140 1.40 Z450 450
G165 1.65 Z500 500
G185 1.85 Z550 550
G210 2.10 Z600 600
G235 2.35 Z700 700
G300 3.00 Z900 900
G360 3.60 Z1100 1100
A01 ─ ZF001 ─
A25 0.25 ZF75 75
A40 0.40 ZF120 120
A60 0.60 ZF180 180
Coating mass
(2) ASTM A653
Type and symbol of chemical treatment
Type and symbol of oiling
Type of chemical treatment Symbol
Untreated M
Chromate treatment C
Type of oiling Symbol
Oiled O
Unoiled X
NOTE:The type and the symbol of the sheets, corrugated sheets and coils shall be given in the table below. Unless otherwise specifi ed, the non-alloyed
coating shall be unoiled and the alloyed coating shall be oiled.
NOTE:The type of chemical treatment other than the above table may be agreed upon between the purchaser and the manufacturer.
Type and symbol of surface finish for non-alloyed coating
Type of coating surface finish Symbol Remark
Minimized spangle Z A coating having the spangles obtained by restricting normal spangle formation to a minimum.
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(3) EN 10346
Coating mass symbol Z100 Z140 Z200 Z225 Z275 Z350 Z450 Z600 ZF100 ZF120
Coating mass (g/m2) 100 140 200 225 275 350 450 600 100 120
Equivalent coating thickness
Type and symbol of chemical treatment
Type of chemical treatment Symbol
Untreated U
Sealed S
Phosphate treatment P
Chemically passivated C
NOTE:The type of chemical treatment other than the above table may be agreed upon between the purchaser and the manufacturer, like chromate-free anti -fi nger print treatment (B).
Type and symbol of oiling
Type of oiling Symbol
Oiled O
Unoiled X
NOTE:The type and the symbol of the sheets, corrugated sheets and coils shall be given in the table below. Unless otherwise specifi ed, the non-alloyed
coating shall be unoiled and the alloyed coating shall be oiled.
Type and symbol of surface finish for non-alloyed coating
Type of coating surface finish Symbol Remark
Minimized spangle M A coating having the spangles obtained by restricting normal spangle formation to a minimum.
Normal spangle N A coating having the spangles as a result of the unrestricted growth of zinc crystals during normal solidification.
Type and symbol of surface qualities
Type of surface qualities Symbol
As coated surface A
Improved surface B
Best quality surface C
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7.1.3.2 Electrolytic Galvanized Steel
JIS G3313/CSC SpecificationType and symbol of chemical treatment
Type and symbol of oiling
Type of chemical treatment Symbol
Untreated ─
Chromate-free anti-finger treated A/A
Type of oiling Symbol
Oiled O
Unoiled X
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Width (w) Tolerance on product width
w≦ 1500 +70
1500< w +100
Width (w) Maximum value of camber
630≦ w 2 in any 2000 length
7.2 Tolerances
7.2.1 JIS G3302 Thickness tolerance for Hot-Dip Galvanized Steel
7.2.2 JIS G3302 Width tolerance for Hot-Dip Galvanized Steel
7.2.4 JIS G3302 Camber tolerance for Hot-Dip Galvanized Steel
7.2.3 JIS G3302 Flatness tolerance for Hot-Dip Galvanized Steel
Unit:mm
Unit:mm
Unit:mm
Unit:mm
Thickness tolerance
630≦ w< 1000 1000≦ w< 1250 1250≦ w< 1600 1600≦ w
0.25≦ t< 0.40 ±0.05 ±0.05 ±0.06 ─
0.40≦ t< 0.60 ±0.06 ±0.06 ±0.07 ±0.08
0.60≦ t< 0.80 ±0.07 ±0.07 ±0.07 ±0.08
0.80≦ t< 1.00 ±0.07 ±0.08 ±0.09 ±0.10
1.00≦ t< 1.25 ±0.08 ±0.09 ±0.10 ±0.12
1.25≦ t< 1.60 ±0.10 ±0.11 ±0.12 ±0.14
1.60≦ t< 2.00 ±0.12 ±0.13 ±0.14 ±0.16
2.00≦ t< 2.50 ±0.14 ±0.15 ±0.16 ±0.18
Nominal thickness(t)
width (w)
Flatness tolerance (max.)
Bow, wave Edge wave(1) Centre buckle(2)
w< 1000 12 8 6
1000≦ w< 1250 15 9 8
1250≦ w< 1600 15 11 8
1600≦ w 20 13 9
width(w)
Type of strain
NOTE:The thickness tolerance shall be measured at any point 25 mm or over from the side edge(the end in the width direction)。
NOTE:1.Edge wave: wave apearing on the edge of steel sheet (end part in the width direction).
2. Centre buckle: wave appearing on the centre part of the steel sheet.
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NOTE:This table applies to all designations include SS, HSLAS.
Flatness tolerance
Flatness tolerance
Width tolerance
Nominal thickness
7.2.5 ASTM A924M Thickness tolerance for Hot-Dip Galvanized Steel
7.2.6 ASTM A924M Width, flatness, camber tolerance for Hot-Dip Galvanized Steel
Unit:mm
Unit:mm
Unit:mm
Unit:mm
Unit:mm
Thickness tolerance
w≦ 1500 w> 1500
t≦ 0.40 ±0.08 ±0.08
0.40< t≦ 1.00 ±0.10 ±0.10
1.00< t≦ 1.50 ±0.13 ±0.13
1.50 < t≦ 2.00 ±0.15 ±0.15
2.00 < t≦ 2.40 ±0.30 ±0.34
thickness(t)
Width (w)
Flatness tolerance (max.)
t≦ 1.0 1.0<t
w≦ 900 10 8
900< w≦ 1500 15 10
1500< w≦ 1880 20 15
width(w)
thickness(t)
thickness(t) width(w)
Flatness tolerance (max.)
Strength N/mm2(max.)
275 340 380~410 480 550
t≦ 1.5
w≦ 900 15 20 22 25 30
900< w≦ 1500 25 30 32 35 38
1500< w 35 38 40 45 48
1.5<tw≦ 1500 15 20 22 25 30
1500< w 25 30 32 35 38
Width (w)Width tolerance
Upper limit Lower limit
800≦ w< 1200 5 0
1200≦ w< 1500 6 0
1500 ≦ w< 1880 8 0
Length Camber tolerance
In any 2000 length Under 5
Camber tolerance
NOTE:The coated sheet thickness includes the base metal and coating and is measured at any point across the width of the coated sheet not less than
25mm from a side edge.
NOTE:1. This table applies to all designations except SS, HSLAS.
2. This table also applies to sheet cut to length from coils by the consumer when adequate fl attening measures are performed.
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7.2.7 EN10143 Thickness tolerance for Hot-Dip Galvanized Steel
w≦ 1200 1200< w≦ 1500 1500< w
0.30< t≦ 0.40 ±0.04 ±0.05 ±0.06
0.40< t≦ 0.60 ±0.04 ±0.05 ±0.06
0.60< t≦ 0.80 ±0.05 ±0.06 ±0.07
0.80< t≦ 1.00 ±0.06 ±0.07 ±0.08
1.00< t≦ 1.20 ±0.07 ±0.08 ±0.09
1.20< t≦ 1.60 ±0.10 ±0.11 ±0.12
1.60< t≦ 2.00 ±0.12 ±0.13 ±0.14
2.00< t≦ 2.40 ±0.14 ±0.15 ±0.16
Nominal thickness(t)Width (w)
w≦ 1200 1200< w≦ 1500 1500< w
0.30< t≦ 0.40 ±0.05 ±0.06 ±0.07
0.40< t≦ 0.60 ±0.05 ±0.06 ±0.07
0.60< t≦ 0.80 ±0.06 ±0.07 ±0.08
0.80< t≦ 1.00 ±0.07 ±0.08 ±0.09
1.00< t≦ 1.20 ±0.08 ±0.09 ±0.11
1.20< t≦ 1.60 ±0.11 ±0.13 ±0.14
1.60< t≦ 2.00 ±0.14 ±0.15 ±0.16
2.00< t≦ 2.40 ±0.16 ±0.17 ±0.18
Nominal thickness(t)Width (w)
Nominal thickness
Nominal thickness
NOTE:1. The coated sheet thickness includes the base metal and coating and is measured at any point across the width of the coated sheet not less than 40mm
from a side edge.
2. Tolerance for steel grades with specifi ed minimum proof strength Rp0.2 < 260MPa
NOTE:1. The coated sheet thickness includes the base metal and coating and is measured at any point across the width of the coated sheet not less
than 40mm from a side edge.
2. Tolerance for steel grades with specifi ed minimum proof strength 260MPa≦ Rp0.2< 360MPa and for grade DX51D.
Unit:mm
Unit:mm
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w≦ 1200 1200< w≦ 1500 1500< w
0.30< t≦ 0.40 ±0.05 ±0.06 ±0.07
0.40< t≦ 0.60 ±0.06 ±0.07 ±0.08
0.60< t≦ 0.80 ±0.07 ±0.08 ±0.09
0.80< t≦ 1.00 ±0.08 ±0.09 ±0.11
1.00< t≦ 1.20 ±0.10 ±0.11 ±0.12
1.20< t≦ 1.60 ±0.13 ±0.14 ±0.16
1.60< t≦ 2.00 ±0.16 ±0.17 ±0.19
2.00< t≦ 2.40 ±0.18 ±0.20 ±0.21
Nominal thickness(t)Width (w)
w≦ 1200 1200< w≦ 1500 1500< w
0.30< t≦ 0.40 ±0.06 ±0.07 ±0.08
0.40< t≦ 0.60 ±0.06 ±0.08 ±0.09
0.60< t≦ 0.80 ±0.07 ±0.09 ±0.11
0.80< t≦ 1.00 ±0.09 ±0.11 ±0.12
1.00< t≦ 1.20 ±0.11 ±0.13 ±0.14
1.20< t≦ 1.60 ±0.15 ±0.16 ±0.18
1.60< t≦ 2.00 ±0.18 ±0.19 ±0.21
2.00< t≦ 2.40 ±0.21 ±0.22 ±0.24
Nominal thickness(t)Width (w)
Nominal thickness
Nominal thickness
NOTE:1. The coated sheet thickness includes the base metal and coating and is measured at any point across the width of the coated sheet not less than
40mm from a side edge.
2. Tolerance for steel grades with specifi ed minimum proof strength 360MPa≦ Rp0.2< 420MPa
NOTE:1. The coated sheet thickness includes the base metal and coating and is measured at any point across the width of the coated sheet not less
than 40mm from a side edge.
2. Tolerance for steel grades with specifi ed minimum proof strength 420MPa≦ Rp0.2< 900MPa
Unit:mm
Unit:mm
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Flatness tolerance
Camber tolerance
Flatness tolerance
Width tolerance
7.2.8 EN10143 Width, flatness, camber tolerance for Hot-Dip Galvanized Steel
7.2.9 JIS G3313 Thickness tolerance for Electrolytic Galvanized Steel
Unit:mm
Unit:mm
Unit:mm
Unit:mm
Unit:mm
Width (w)Width tolerance
Upper limit Lower limit
w≦ 1200 5 0
1200< w≦ 1500 6 0
1500< w≦ 1800 7 0
1800< w 8 0
Length Camber tolerance (max.)
L≦ 2000 0.25%
2000< L 5 mm
Flatness tolerance (max.)
t<0.70 0.70≦ t< 3.00
w< 1200 10 8
1200≦ w< 1500 12 10
1500≦ w 17 15
Width (w)
Thickness (t)
Flatness tolerance (max.)
t<0.70 0.70≦ t< 3.00
w< 1200 13 10
1200≦ w< 1500 15 13
1500≦ w 20 19
Width (w)
Thickness (t)
NOTE:Tolerance for steel grades with specifi ed minimum proof strength Rp0.2 < 260MPa
NOTE:Tolerance for steel grades with specifi ed minimum proof strength 260MPa ≦ Rp0.2 < 360MPa and for grade DX51D.
630≦ w< 1000 1000≦ w< 1250 1250≦ w< 1600
0.40≦ t< 0.60 ±0.05 ±0.05 ±0.06
0.60≦ t< 0.80 ±0.06 ±0.06 ±0.06
0.80≦ t< 1.00 ±0.06 ±0.07 ±0.08
1.00≦ t< 1.25 ±0.07 ±0.08 ±0.09
1.25≦ t< 1.60 ±0.09 ±0.10 ±0.11
1.60≦ t< 2.00 ±0.11 ±0.12 ±0.13
2.00≦ t< 2.50 ±0.13 ±0.14 ±0.15
Nominal thickness(t)width(w)
NOTE:The thickness tolerance shall be measured at any point 15 mm or over from the side edge(the end in the width direction)。
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Camber tolerance
Width tolerance
Flatness tolerance
Unit:mm
Unit:mm
Unit:mm
width(w) Width tolerance
w< 1250 +70
1250≦ w +100
7.2.10 JIS G3313 Width, flatness, camber tolerance for Electrolytic Galvanized Steel
Flatness tolerance (max.)
Bow and wave Edge wave(1) Centre buckle(2)
w< 1000 12 8 6
1000≦ w< 1250 15 9 8
1250≦ w< 1600 15 11 8
1600≦ w 20 13 9
Width (w)
Type of strain
NOTE:1.Edge wave: wave apearing on the edge of steel sheet (end part in the width direction).
2. Centre buckle: wave appearing on the centre part of the steel sheet.
Width (w) Camber tolerance
630≦ w 2 max.(Any portion 2,000 in length)
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Classification Quality Common Specification Typical Application
For Forming Fabrication
Commercial Quality(CQ)JIS G3302 SGCCASTM A653 CS、FS TYPEEN 10346 DX51D,DX52D
Computer case & parts、Pre-painted base、Deck、Construction material、LQF use、OA Furniture and Cabinet
Drawing & Deep Drawing Quality & Extreme Drawing Quality (DQ,DDQ,EDDQ)
JIS G3302 SGCD1~3ASTM A653 DS,DDSEN 10346 DX53D~DX57DEN 10346 HX180~300YD
Household electrical appliances、Inner or outer panel of automobile、Air condition or washing machine case & frame、Computer case & parts、Automobile used steel
For Structural Uses Structural Quality(SQ)JIS G3302 SGC~XXXASTM A653 SS-XXEN 10346 HX260~420 LAD
Slide rail、Duck、Auto-vending machines case & parts、Steel door、Construction material、Automobile used steel
Classification Quality Common Specification Typical Application
For Forming Fabrication
Commercial Quality(CQ) JIS G3313 SECC Computer case & parts、Household
electrical appliance、LCD-TV parts
Drawing & Deep Drawing Quality & Extreme Drawing Quality (DQ,DDQ,EDDQ)
JIS G3313 SECD、SECE、SECF、SECG
Household、electrical appliance、Machine case⋯etc.
7.3 Classifi cation of Quality
7.3.1 Hot-Dip Galvanized Steel
7.3.2 Electrolytic galvanized Steel Coils
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PRODUCT AVAILABILITY
8.1 Unit mass
8.2 Available Sizes
Product Type Min. Uni t mass
Hot-dip Galvanized Coil 3t/Coil
Electrolytic Galvanized Coil 3t/Coil
Product Type Thickness Width
Hot-dip Galvanized Coil 0.30~2.60 780~1830
Electrolytic Galvanized Coil 0.40~2.00 865~1525
NOTE:1. The available sizes in the table above are for reference, and the details please refer China Steel web site(www.csc.com.tw): Customer service→ Production→ Available sizes and Thickness.
2. If you have any question concerning steel specifi cation, sizes, coating type, coating mass and chemical treatment, please contact CSGT or CSC technical service people.
Unit:mm
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MAR
KING AN
D PAC
KING
9.2 Packing for Zn-coated steel
9.1 Marking for Zn-coated steel
1 2 3 4 5 6 7 8 9 10 11
CSClogo
CSCname
Productname Specification Size Identification no Net
massGrossmass
Coatingcode
Qualitytype
Heat no
Hot-Dip Galvanized Coil V V V V V V V V V V V
Electrolytic Galvanized Coil V V V V V V V V V V
Marking Item
Product Category
VCIPaper
Hard-Board Paper PaperEdge Protector
Sheet Metal Protector
MetalEdge Protector
circumferential surface
side wall
inner surface
outside diameter
inside diamete
circumferential surface
side wall
inner surface
outside diameter
inside diameter
Hot-DipGalvanized Coil V V V V V V
Electrolytic Galvanized Coil V V V V V V V V
PackingMaterial
ProductCategory
Inside packing Outside packing
VCI Paper
Hard-Board Paper
Hard-Board Paper
Metal Edge Protector
Sheet Metal Protector
Sheet Metal ProtectorMetal Edge Protector
Strapping
Paper Edge Protector
Paper Edge Protector
Hard-Board Paper
1 2
3456789
10
11
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(1) Rust Prevention
If antirust treatment is not properly performed for the Zn-coated steel products, it will be easy to rust the steel surface.
Therefore, the coils have to be spread with proper rust preventive oil or chemical treatment according to the orders
to protect zinc layer surface, and the coils are packed completely to protect them before shipping. However, the
steel sheets and coils are easy to rust owing to the environmental factors during their storage and use. Especially
the condensation problems are easy to occur when the coil storage is in an environment of high humidity and high/
low temperature with rapid changes. Therefore, it should particularly pay attention to the prevention of condensation
and drain water in advance. Besides, since the dust or acidic substance in the atmosphere are also easy to rust the
surface of steel coils or sheets, such problems in the storage or processing must be eliminated for keeping good
surface quality.
(2) Stretcher strain and Aging
There are solid solution Carbon and Nitrogen in the low carbon steels. If they are not treated properly, the stretcher
strain marks will be occurred in the process. Therefore, the temper rolling process will be carried out appropriately on
these products to eliminate the extension of yield point. However, the extension of yield point may appear again with
the longer period of storage as we called the aging problem. Aging is mainly related to solid solution Carbon, storing
temperature and time. The “fi rst in, fi rst out (FIFO)”management to use these grades of steel is recommended as
soon as possible in order to avoid the aging problems.
(3) Decontamination of fi lm treatment coils after processing
The surfaces of Zn-coated steel sheets are often treated with anti-fi nger print as a temporary antirust treatment.
Such steel materials will again be degreased, decontaminated, rust removed and cleaned, and fi lm antirust treated
after processing. Since these treatments may cause discoloration and damages on the film of steel surface,
the operations toward to the lower concentration of medicament, the lower processing temperature, and shorter
processing time will be advantageous. Concrete recommendations are as follows:
a. The pH of degreasing liquid is recommended as 7.0< pH< 10.0. It is possibly close to the room temperature
and not to take much time to treat degreasing liquid.
b. Please use the non-polar solvents to clean samples and graze it slightly. Do not use the polar organic solvents.
c. If the products are needed to dry, the drying temperature and time are maximum 180℃ and maximum 15 minutes
respectively.
(4) Painting
The painting is one of the common ways to apply for further protecting the Zn-coated steel products, or enhancing
their beauty and function. The selection of types of paint and the adoption of painting methods have to carefully
consider the shape of products, the application, and the environment-friendly requirements.
Simple painting modeSurface cleaning → painting → baking
It may paint directly on the surface of cleaned substrate. The choice of paint should consider the compatibility
with the post-treatment layer.
PREC
AUTIO
NS FO
R U
SE
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Durability painting mode
Surface cleaning → chemical treatment → painting → baking
These products are suitable for the long-term use and high-corrosion-resistance requirements. The substrates of application
are usually the cold-rolled steels or Zn-coated steels with oiled. It should wait for painting on the cleaned substrate surfaces
after the overall chemical passivation reaction with chemical medicament is produced. The passivated fi lms can keep the
paints from directly contacting with active metals, and have long-term stability to protect the products. Common chemical
treatment is phosphate-zinc treatment. The densely phosphate-zinc crystals can improve the adhesion between the primer
and the substrate. The multi-level painting should consider the compatibility with the paints.
The factors of failure coating
(a) Insuffi cient clean: The residual oil and contaminant are often seen on the steel surfaces. These foreign matters may
cause the paint to be unable to bond to the substrate surfaces, and may result in declining to fail the adhesion of fi lm. It
is better to understand the rust preventive oil, lubricants and other characteristics, proper choosing the way of cleaning
and cleaning agents, paying more attention to storage conditions and painting operation environment for helping to
improve the insuffi cient clean.
(b) Unsuitable chemical treatment: If the passivation fi lm of chemical treatment is not suffi cient or uneven, once outside
corrosion factors are contacted with metal, the reactive metal is very easy to oxidize. Then oxide will thoroughly destroy
the adhesion of primer paint to the steel surface. Moreover, if there are loose passivation fi lms and coarse crystals or
the residue contamination on the chemical treatment liquid, it will also cause the defi ciency of the fi lm adhesion. It is
better to understand the reaction properties of the chemical treatment liquid, paying more attention on the differences
between different cold-rolled steel sheet surfaces, properly adjusting the treatment liquid concentration, temperature
and time, as well as emphasizing on the clean of the treated surface.
(c) Improper paint:The environment and the end-use of products should be considered in the selection of paint, and the
appropriate painting procedure should be adopted to ensure that the treated substrate surfaces are suffi ciently wetted,
are compatible with the paint, and have the ability to resist the environmental corrosion factors.
(5) Welding
a. To compare with cold-rolled steel sheets, the Zn-coated steel sheets have lower resistance values and need more welding
current or longer welding time to obtain suffi cient resistance welding heat.
b. The foreign matter phenomenon contaminated with electrodes in the welding process occurs easily when the Zn-coated
steel coils or sheets are used. The electrode durability of the Zn-coated steel products is lower than that of cold rolled
coils or sheets. Therefore, the electrode must be replaced or polished during welding if necessary.
c. If the welding parameters (welding time and welding current) can be adjusted properly, the Zn-coated steel sheets can get
similar weld lobe curve and welding strength to the cold-rolled steel sheets.
d. The resistance welding process as an example, if you want to weld the Zn-coated steel sheets (GA), please refer to the
following table of suggested welding parameters to ensure stable welding quality.
e. If the destructive test of the welding-core is needed to perform, please refer to the JIS Z3136 and Z3137 specifi cations.
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Suggested welding parameter table of resistance welding
Thickness of Steel (mm)
Electrode force (kgf)
Electrode Face Diameter
(mm)
Holding time before welding
(cyc)
Welding time (cyc)
Welding Current (kA)
Holding time after welding
(cyc)
0.30~0.49 170 5 > 30 9 Expulsion of welding current-0.4 2
0.50~0.69 180 5 > 30 10 Expulsion of welding current-0.4 2
0.70~0.89 210 6 > 30 11 Expulsion of welding current-0.4 2
0.90~1.09 230 6 > 30 12 Expulsion of welding current-0.4 3
1.10~1.29 250 6 > 30 14 Expulsion of welding current-0.4 3
1.30~1.49 270 6 > 30 16 Expulsion of welding current-0.4 3
1.50~1.69 300 6 > 30 18 Expulsion of welding current-0.4 4
1.70~1.89 340 6 > 30 20 Expulsion of welding current-0.4 4
1.90~2.09 380 6 or 8 > 30 22 Expulsion of welding current-0.4 4
2.10~2.29 420 6 or 8 > 30 26 Expulsion of welding current-0.4 6
2.30~2.49 450 8 > 30 28 Expulsion of welding current-0.4 6
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CONVER
SION TABLES
Length
ft inch mm m
1 12 304.8 0.3048
0.08333 1 25.4 0.0254
0.003281 0.03937 1 0.001
Stress
ksi(=1000psi) psi kgf/mm2 N/mm2(Mpa)
1 1000 0.70307 6.89476
0.001 1 7.0307×10-4 6.89476×10-3
1.42233 1422.33 1 9.80665
0.145038 145.038 1.101972 1
AbsorbedEnergy
ft-lbf kgf-m N-m (=Joule)
1 0.138255 1.35582
7.23301 1 9.80665
0.737562 0.101972 1
Mass 1 kg = 2.20462 lb
Force 1 kgf = 9.80665 N
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Conversion Table from HR30T to HRB
Conversion Table from HR15T to HRB
HR30T Converted HRB HR30T Converted
HRB HR30T Converted HRB HR30T Converted
HRB
35.0 28.1 47.0 46.0 59.0 63.9 71.0 81.9
36.0 29.6 48.0 47.5 60.0 65.4 72.0 83.4
37.0 31.1 49.0 49.0 61.0 66.9 73.0 84.9
38.0 32.5 50.0 50.5 62.0 68.4 74.0 86.4
39.0 34.0 51.0 52.0 63.0 69.9 75.0 87.9
40.0 35.5 52.0 53.5 64.0 71.4 76.0 89.4
41.0 37.0 53.0 55.0 65.0 72.9 77.0 90.8
42.0 38.5 54.0 56.5 66.0 74.4 78.0 92.3
43.0 40.0 55.0 58.0 67.0 75.9 79.0 93.8
44.0 41.5 56.0 59.5 68.0 77.4 80.0 95.3
45.0 43.0 57.0 60.9 69.0 78.9 81.0 96.8
46.0 44.5 58.0 62.4 70.0 80.4 82.0 98.3
HR15T Converted HRB HR15T Converted
HRB HR15T Converted HRB HR15T Converted
HRB
70.0 28.8 76.0 47.3 82.0 65.8 88.0 84.3
70.5 30.3 76.5 48.8 82.5 67.3 88.5 85.8
71.0 31.9 77.0 50.4 83.0 68.8 89.0 87.3
71.5 33.4 77.5 51.9 83.5 70.4 89.5 88.9
72.0 35.0 78.0 53.4 84.0 71.9 90.0 90.4
72.5 36.5 78.5 55.4 84.5 73.5 90.5 92.0
73.0 38.0 79.0 56.5 85.0 75.0 91.0 93.5
73.5 39.6 79.5 58.1 85.5 76.6 91.5 95.0
74.0 41.1 80.0 59.6 86.0 78.1 92.0 96.6
74.5 42.7 80.5 61.1 86.5 79.6 92.5 98.1
75.0 44.2 81.0 62.7 87.0 81.2 93.0 99.7
75.5 45.7 81.5 64.2 87.5 82.7
Note:This table shall be in according with ASTM E140. Hardness not in the table of ASTM is obtained by interpolation。
Note:This table shall be in according with ASTM E140. Hardness not in the table of ASTM is obtained by interpolation。
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SP
EC
IFICATIO
N
34
SP
EC
IFFICICATATIOIO
NNC
ON
VERSIO
N TABLES
Conversion Table from HV to HRB
HV Converted HRB HV Converted
HRB HV Converted HRB HV Converted
HRB
85 41.0 145 76.6 210 93.4 330 ─
90 48.0 150 78.7 220 95.0 340 (108.0)
95 52.0 155 79.9 230 96.7 350 ─
100 56.2 160 81.7 240 98.1 360 (109.0)
105 59.4 165 83.1 250 99.5 370 ─
110 62.3 170 85.0 260 (101.0) 380 (110.0)
115 65.0 175 86.1 270 (102.0)
120 66.7 180 87.1 280 (103.5)
125 69.5 185 88.8 290 (104.5)
130 71.2 190 89.5 300 (105.5)
135 73.2 195 90.7 310 ─
140 75.0 200 91.5 320 (107.0)
Note:1. This table shall be in according with ASTM E140. Hardness not in the table of ASTM is obtained by interpolation.
2. The value in parentheses is out of the scope of HRB and for reference.It may be reported as the round number
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classification JIS G3302 JFS A3011 ASTM A653 EN 10346
Mild Steel
SGCC CS A,B,C DX51D
SGCC JAC270C DX52D
SGCD1 JAC270D DX53D
SGCD2
SGCD3 JAC270E DDS A DX54D
SGCD4 JAC270F EDDS DX56D
Bake-hardening Steel
JAC270H HX180BD
JAC340H HX220BD
Deep-drawing Steel
JAC340P HX220YD,HX220PD
HX260YD
JAC440P HX300YD
High Strength Steel
JAC340W
JAC390W
JAC440W
High Yield Ratio Steel
HX260LAD
HX300LAD
SGC 440 HX340LAD
JAC440R HSLAS50(340)
HX380LAD
HX420LAD
JAC590R
Low YieldRatio Steel
JAC590Y HDT600X
JAC780Y HDT780X
JAC980Y HDT980X
Structure Steel
SS 33(230) S220GD
SGC340 SS 37(255)
SGC400 SS 40(275) S280GD
SGC490
Note : The grades of these specifi cations are similar, not the same in the above table
COMPAR
ISON O
F SPECIFIC
ATION
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ORDER
ING IN
FORMATIO
N
Required Ordering Data Example
1
Specification (Name, Number, Grade)
JIS G3302 SGCC ZSBX UE
Coating Type ZZ(GI), ZF(GA)
Coating Thickness Z08, Z12, F06, F08⋯etc.
Chemically Treatment Type M, C, P, NC
Surface Quality
General (GP)
Exposed (GE)
Unexposed (UE)
2 Oiling Unoiled
3 Dimensions (Thickness × Width × Length (or coil)) 1.0mm×1219mm×Coil
4 Coil size (Inside Dimensions, Outside Dimensions) ID 508mm,OD 1650mm max.
5 MassMax. Mass 10t max.
Order Mass 45t
6 Application and Fabrication Methods Welded Pipe
7 Special Requirements (if Required) HRB 55max.
(1) The contents of this catalog are for reference only, customers are urged to consult the specifi cations published by the corresponding Associations.
(2) Information of the available steel grades, sizes, marking and packing as shown herein may be updated without notice to comply with actual production situations.
(3) We invite you to contact our Head Offi ce should you have any questions concerning steel specifi cations or ordering requirements.
Phone number are listed below for your convenience. Numbers of our international Offi ces are shown on the back cover.
1.Sales servicesCHINA STEEL GLOBAL TRADING CORPORATION Address:10F, NO.88, Cheng gong 2nd Rd, Qian zhen, Kaohsiung 80661 Taiwan, Republic of China.
Tel:886-7-3322168 Fax:886-7-3356411 E-mail:[email protected]
CSGT JAPAN CO., LTD. Address:2F, Osaka U2 Bldg., 4-7 Uchihonmachi 2-Chome,Chuoku, Osaka 540-0026, Japan
Tel:002-81-6-69100850 Fax:002-81-6-69100851 E-mail:[email protected]
CSGT HONG KONG LIMITED Address:ROOM 1407,14/F, WORLD WIDE HOUSE, 19 DES VOEUX ROAD, CENTRAL, HONG KONG
Tel:852-25231488 Fax:852-25234748 E-mail:[email protected]
CSGT (SHANGHAI) CO.,LTD.Address:21F, NO.1468 NAN JING WEST RD., SHANGHAI 200040
Tel:86-21-62896898 Fax:86-21-62896678 E-mail:[email protected]
CSGT (SINGAPORE) PTE, LTD.Address:#14-01, MAS BUILDING, 10 SHENTON WAY SINGAPORE 079117
Tel:65-62238777~8 Fax:65-62256054 E-mail:[email protected]
2.Metallurgical DepartmentTechnical Service Section-Metallurgy:886-7-8021335
Metallurgical Specification and Testing Section:886-7-8021111 Ext. 5797
For prompt and proper processing of your inquiries and orders, please furnish com
plete details of items as
shown in the box below. Please feel free to call C
SC's Sales O
ffi ces or Metallurgical D
epartment, if you need any
information about C
SC's products or services.
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