MI& P-76ceveryspec.com/MIL-SPECS/MIL-SPECS-MIL-P/download.php?spec=MIL-P-79C... · MI& P-76c 15Jum 1661 SUPERSEDING MWP-76B Is AUgU8t!Wsa u’) 6CklTARY S PE C IAY= $ P-IC ROW AND

MI& P-76c15 Jum 1661SUPERSEDINGMWP-76BIs AUgU8t !Wsa

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6CklTARY SPECIPICAY=I$

P-IC ROW AND TUBES, T%E~~, LAMINATBD

‘fMs epecfficatkm has been apprOvod by * IkparUMM of XXfenne wtd M mand8tory for ase by the *-partme~ of the timy, the !Wy, and the Air Force.

1. 8COm

1.1 .- IM8 8pcifk8Mon -rs the bsic%S%Charwte ● required of Wnil-od tlnrmoeettx

rod68xit8abs, andthem--8uu8db*kaatMaAory determi*iOn= Rds ad tubs ma-- fr’mm●- Stook, 8M otlmr--rmM rodand tutm, are Iu)t *valwd by this SpQcukuon.

l.a 9- tfiatioao - The lam$natd thermo-Wtt4tiS@~sMlkHM intbebhwtng form8 and -, ~ p~@d(~6c ~=):

Form R - RO(k, Umbd.FOrM Tr - Tttben, mlbd.m?m ?m . ~, mo--~ PBE - ?M=-h, -~l~-=s~=lype PBG - Papr-tUe, @Deldic-rmn.~ PBM - ~r”tue, J#&!mlAc-resin,

(form Tr CdY).m = - Cdtmt-fabrk_, phedic-

TypD m - Cottoa-fhbric”m, phedk-mi8 (forms T d R ody).

~ m - C@to@!i-fabric-dBe,pheldc-mata @omuTr dy)c

Type C?MG- G18s@-f8bric-h8e, melamMe-resln (iorxns Tr - R o~Y).

2. APPL4CABU DOCUMEm

2.1 TIM fouowq qmcifications - s~de,of?b isaa tneffoct ondsh of iavitstion for bids,farmaput oftFlisape@~b theextmt6pec-m b-k

BPBCMCATKkN

mDBRAL&P”a8 - ~4_yT*--*

~.lu#~5& “ ~, FMd&I@G~

PPPJM61 : Bln18s: FM-, w-

PPP-&ml - ~, we C** my-Wod.

PPP-B-621 - EkmM, wood, ki81kd ad&xk-Cora@r.

PPP-w6S6 - Ebxec, Piber.PPP-B476 - Bmea, &t-U~, Pafmboard.PPP-T-66 - ~; Pre8m8re-se19ttive Ad-

b8iwc, Waterproof-for-W utfiam~.

PPP”T-76 - ‘m% proamAro-8ewve Ad-hmfm, Pa#mr, water ReoiU-tad (I%Wc8rto8 SdU@.

PPP-T-U7 - ‘hpe, Pree8ure-&nsitive Ad-haaiwe, lFu8meti reinforced.

XIIJTARYmLP-!18 - Pre*rntMm, Metbds of.M& Eklw= --8: wam-cM9tad,

VeMr, Paper Ovwr#aAd.Mr&bma - MSma, c-, Webrp’af

STANDAED6

MSUTARYUxL-mm 105- &mplmg Proce&me 81M

Tables for Xnspoctioa byAt&t-s.

Mt&s’mb129-~for~*ad-*,

(C@e9 of Cpecukatfom, ~, -W,

5x&~*, * ~ b ~~-pmcurmm#dfhIwtudml’db~ fm thc pmc~ utivtty o? - -edbytha ~~ offk8r. )

.%s2Hs==A~~$=-=.qwcffied Mr8iw Urbm ~ iadkab4 themmwiuaf!fwx fm4bt8d hlvfi8kbafor bid98&l18p-@Y*

OF~ C~A’fWN CCMUMT=UmfoR= m Ch9$fkti iMm8.

(*licatbn”for copies dtouid be uUressd to *OU’ktd Ctiif~ Committee, 1 Park A=me at9&da*, IWWY- 16, FL Y.)

AamRIRIyf~fY’FoR mrf’nm MA’rERIAM~ mmambm of

Rtg9d mbm Mod for mecmoal fn-

Downloaded from http://www.everyspec.com

chickrmss greater thm me half Inch or -a with ●

cfhtneter greater then 1 tach m8Y *OW CfWCka orcriscke between the 18m4n8uau m machined oreewed -es. E@ee, drWed holes, arid uwtdned,mllkd, or groud face8 of bmtnattd rod8 uuf *S●Ml be ~ end Ml present ● neat 8ppeamnce.

3.1.5 w+%

The nrp of m8tertd fumbhedtntbe rodor form, ee delivered, ehd) not ex-CdtbO ~ (~ 4,6.7):

3.s.1 Luu&&. -

3.8.1.2.1 - ~ spectfted (eee 6.2),mdslb9Mbe CuttohwthtiubtoJer8aoe@ shwn f9 -8 IV.

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sownill table V’lJ●ha apldy.

S. S. 2 2.2 Tolerm- oa di-@t@rs and wmtlthkkne-es of tubes -

I I

Rod Ael@ Dt8meter

I [‘Tito 1-1 S/16 7

2t04imobe1

incbee, inchwhe ilxhwwe

Inches [ InchOtole~. tham3 0.010 0.o’1o3toloeethan6 .010 .0156tol~tla8m12 .015 .02012 WldW’= . 0s 1/22

V’ Bb8mue dtllmAom in ec~ wtm AmMD-741 .

Chtdth ~awter d tdme‘i%& length ,

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MIL-P-79C

4.3 thmpu ~ for ilmpectiow -

4. 3.1 Lot. - FG impwtion prpoees, ● id shallCOIMw Ofiziii th8raba@ti~ plaetic matertdddcb ia of the same form, type, rsa@@d size (a8covered in table X, ad ba - WMChme@w .‘-o- or both d the folbwtw condttie, as agreedon between the lamimtor md the Govermmwti.

b) ~mti b w ~me period dtbenotto~--”

04 Offered for tMtVWY at tbe @auMttme.

‘TU1O VU - ToAer~ 08 dh!n8@- d mohbdmch.

?bmtmi *meter,.. —“

Incb8

I Nomhal diameters

Rd&d Olq

4- 1/8 to 12, iJIChWiVG

huh

0.005-

0.003

.W4

.Om

.010

.090

.040

.Om

Built-upmandrel?

-.---

-.----c..-

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0. [email protected]

. 02s

0.020. 02s.O@

Y

I

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8

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I - a I -~

Inl%ls:’::”lo “ “ ‘rIllI 1

IllEl I I 1%~1 ‘:’; ;lY-.LL

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~.p.79c

Wle% - fwweof~~-for~ ~X@~”—-— - —- T

Rods Upto and tnchdtng 1 tnch dhxnete rOver 1 inch diameter.

! 1/8 up to butnot tnchdhg 1/2 inch ID:] /32 Up to but nd tdlld!~1/1 6 inch wall thlckatess

I1/16 up to but not including

,~~z ::: %~y~i’’”’s”

i 1/32 Up to but not tnciudtng~Ued tubes 1/16 tncb wdi thickness

1/16 Up m S8bd i~hdt~ 1/4tnch wall tMckne8sOver 1/4 up to 8nd tEJClllX1 Irich wall thtckness

I0ver2uptosnd U3chbdM8bc@~:

1/16 Up to and indudtnff t/~1 inch waAl thickness

Over 1 /4 inch wall thickness

{

1/16 up tO ad tncbdtnfJ 1/8 tnchhfolded tubes wall thiclmess

Over Y/6 tnch wall thickness——-- —.4. 3.2 SamPlms for exambmtkm. - A samp!e of

rods or tubes shail be selected at ramiom from each Mof material off e red for examination of vmsal and cti-I cnsiona) character sttcs. with lot acceptance tmsedor, he fol lowlng sampling inspection requirementsshown m table XI in accordance with Standard MIL-5TD-105:

Table XI - SampIing for examination,AQL (approx. ) = i. 5 percent delectfve.

r———I 15 and under 10 0~ j6t~40 15 0‘ 41tollo111 to 300 * 35 ?

301 to 500 I wsol to 600801 to 13001301 and over

r4, 3.3 Sampling for acceptance teDtS. - ~ t~ 1~

consists of 100 or less lengths ~f rods or tubes,thenumber of samplea shall consist of 10 percent of tbeIot, butin no case less than one or more than ●-lengths. U the lot consists of 10! or more ht@ts drods or tubes thenurnhe- of sampks 8MI be 8sshown in tabie xll.

4.4 !nspectlon. -4. 4.1 Exatnirmtion. - &ach of the sample mds or

tubes selected lxJaccordance with table ~ shall be

examtned to verify compliance with the requirementsof this spectftcatbn. Any rod or tube in the sample %containing one or more defects shall be rejected,●nd if the number of defective mxte or tubeo in anyeample exceeds the acceptance number for thatsam -pie, ‘the lot represented by the ●ample shall be re -jetted.

TabSa XI - $ampli~ for acce@ance tests.

I Number d iengt.ha in lot

.101 to 180, inclusive181 to 300, hchuhe301 to S00, inchas$vesol to 1, W?O,Inchdvw

1, 301 or more

Number ofsamplehg’ths

‘4s7101s

4.4.2 AcC8@X nce tests, - The samples selectedin accordance with 4. 3.3 shatl be subjected to ac-ceptance tests. The number of specirneno gnsrsam-ple to be tested and the numbe~ of tests per specimen

shall be as specified in tables 1 to Ill, inclusive. Ifthe lot contains five or less standnrd lengths oftubes cr rods, only water absorption and specific:ravfty tests need be conducted. Many of the sam-#es tested fails any of these tests, the lot shall bereject ed.

4.5 coA’ttkMItSUL.“

4. 5.1 Nomenclatgq - The foliowhqg lettereshall be usec! to indicate the respective general con-d!t:oning procwchlres:

Condition A - As receive~ no Dpectal con-dftkmt~.

Condition D - Immersion condittont~ in dts-tilhciw8ter on samples asreceived.

Condition E - Tempera@re eonditloti~ in anoven on samples as recei veal.

NOTE: Whenever a condtttontq letter ts fo))medby ●n tnfertor 1, as ~, ● prtor temperature con-dttiont~ baa been carrted out.

4.5.2 Demftm tion. - CondMoniq proce~=sshall be designated as iollmu:

(a) A ca@- M’ter indicati~ tb general con-dition of the specimen, i. e., 8s rweimttm~rsio~ and temperamre cotiti-~.

(b) A rru!nkMrMdcattIw in hours the chmationof the conditioning.

(c) A number Micating in degrees centi~~t& condtt ~oti~ temperature.

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MfL-P-79C

The numbers shall be separated from each other byslant UUrkB, and from the capital letter by a hyphen.

4,5.3 Ttrne tolerance. - &en conditionl~ shellbe followed by cooli~ to room temperature (2S”c. )in a dmiccator, and immersion conditioning shall befolkmmd by cooli~ to mom temperature in distilledwater, as spectffed h table XXII.

*4, 5.4 Temperature tolerances. - The condition-

lK tem~rature tolerances shall be as fOlkws:

Nominal temperature, Tolerance @degrees c. degrees c.

29 235 150 2105 2

4.6 Test methods. -

4.6.1 Mee8ureme*. - Speclmefw shall be ex-amined, and climeneiom required to be recordedshall be measured to the neareat O.001 tnch by usi~a suitable micrometer or vernier caliper. AN otherdlmeneione shall be rneaeured to the nearest one-thirty-second inch. Such measurements droll bemad+ before conditioning in each case and after com-pletion of the teat wherever required

4, 6, 2 Waaer absor@ion. -

4.6.2,1 Specimena. -

4.6.2, 1.1 fbde. - The test speclmeri for rodsshall be ) inch inle~h for rods 1 inch in diameteror under, and one-half inch in length for larger di-ameter rods. The diameter of the specimen shallbe the diameter of the fintshed rod.

4=6*2*2 ~- Ilte Bpecimerba shall bewtgMf hdtwhmlly ●id then 8ubjected to 105 L 2’C.for ] hmr (-0+6 minutes), cooiecf in a desiccatorfor at least 2 hours, ●nd reweighed [WI ). The spec-imens shall then be immersed in distilied water for24 hcmrs (-0+1/2 tmur) ●t 22 + 2°C. They shall beremoved tndtvidmlly as ntm@ ●ll surfaces wipedoff wtth a ~ cM, end then reweighed (W2). Thetest shall begtn t@ more than 1 minute after re-moval of the spcimens from the water ●nd shall becompkted ae raptdly es comtetent w!th ●ccuracy.NOcorrection shall be made for water-soluble matter

‘hMe XIII - CondMi* ti m e tderanc.w.

CondittontmCommente

Condition Time Time ?’lmetolerance tolerance

D-48/50 -O hours 1 hour -O hours Cool by Mmersion in a suffi -D-24/23 +1/2 hour *Z hams Ckllt quenttq d dMilAed

watu to r-cc the tempera-tureto 22°C. within 1 km.Remove Wvtfklly as~ a8bdwipe surfacenteroiftithati. 8tartte8t** 1 mtsmte a$terrem- Ispedcnen fromvater.

I?-1/los 4 mknUto8 sIwm’a ~- &e ntet-atmorpthm test+6 **C8 or- (4. 6.s)

D~-a4/23 -0 hrs ------- ------- ~ ~-~ t-+21mu8 .*


PercerB~e of water akmrpttort in 24 hours =

‘+ x 100

4.6. S JXelectr]c stremrt h perpendicular to lam-inations (short -time). - Tlte ~electric strengthoermendi“Cuiar to lamiruktions shall be determined“~& ShOrt-time te6t S~Cifbd h rfMthOd 4031 Of

Specification L-P-*6, USLU specimens 12 inchesIoqg. 7%s tests shall be - waler oil at a fre-quency not exceetim 100 cychs per second. T%evolt age in the short-time test shall be increased,uniformly at the rate of 500 volts per second. Thetest electroc@ shall be as specified in table XW.

Iktde W - Ebctro&s.Other

electrode I{

7‘Mef~ foi

i

I

;Greater than 1.5 I

tube.Mercury or metal foii Metal foiij t

The electrodes ~~al] & o! :M same le~h, accurately

centered w]th respecf TP tne specxmer.. A very thincoating oi pet rolatum shaii tw used = an adhesiv~ forfoil electrodes A c Cwk Oi WiX pbg Shaii b used tShold the nv?rcur~f In t},c tube

4. 6.4 Compressive st rengt h (axiai~ - Theamal compressive st re~ h shall k detemmed bymethod 1021 of Sfxw~ica~ion L- P-406, except thatthe speckmen length shall b- a s shown in Uble ~.

Tabk XV - Spec]m?n lengths forccmpressiw s[rength tectf.

[Outside dameter of tube or rodj Le:@ UI sptrirne~F .— --lXnChes i Lnchcs ,41 :

‘Rods1

I I

1/8:0 1,’4, inclusive 1;2 ;Above 1,/4 to 1/2, inclusive I 3 !

IA t m W1I’2tO 1, iM&J6iVe z

Ahve J to 2, inchmive i

!

4 ITubes: II Up to 2. inclusive 1

..-.—- . ————-

4. 6.5 FIexurai strer@h {- on’yl. -

4. 6.5.1 Specmens. - The testspesimen shallhave a diameter qua] to tlw chame?er of the rodad a span-depth ratio of eight to one SW tMcsed.

For rods over one-half inch in daimetcr, epeciznamdull be machtnsd to a dtarneter of one-haM inch and●pecimAs s inches l= ShaLl * cut.

4.6.5.2 APPar8tuS. - Any ●Wd testinu ma-chine may be used pttmi- it is accurate to *tMr.1 percent for the lowest Load for which it is used.The specimen shall be tested as a simple beamloaded at the center. me aupfxww shall have cowtact edges rounded to a radius of one-eight tnch.The distance be~een supports a!!l be eight timesthe dtameter of the rod. Where neoessary, theJoad shall be applied thr~h a steel block haviqf asemicircuk contact ~e of the same radius as therod with edges rounded to a radius of one-eighthIrich. The cross-head speed of the testbg machz=shall be such that the bad can be accurately weighed,tit shti not exceed O.OSCinch per minute when themachine is runnutg idle.

4.6. S. 3 Proce&re. - Specimens shali bemeasured to the nearest O.00 Unck, insertd intethe machk and broken.

4.6.5.4 Report. - ‘f%e fkxura& 0s fibe: stxest+in p.s.:. shall be calculated from the formwa”

h%ereP = The bredanfz i-c apph cd inpumdF.= The spar, or d:szwc e between sup- U)1.ports.

d = The machined dmmeter in mciw,.

4.6.7 Warpage. -—-

4.6.7.2 Proc@urc. ‘ The specimen AaU wB*8CI on th; “~ti flat surface and rd.awdqphst t!!e vertkally plane surface of the rigiti bar.TM bar shd be firmly fastened to the horiaomd~ ~,~ace. w~~~ ~~ ~d of j~~er g~es, the

tnaximum distant? betwon the tube or rck and thever’ti~y plane Burface shall k measured to then~arest O.001 inch.

‘ 4. 6.7.3 Repcmt awi calaltation. - Warp OYlad- -—of 8traighWe88 std be report~ as the m=imum


L’

( dtstance or MY part d the tube or rod from astraight~e wtdch connects the ends of the apecl -men. The minimum kqttb teOted for Warpage shallbe 24 tncheeo me warpage W then be czlcu.lateda8 fouows:

““‘y

Where:W36 = Perc~e d warp,

to a 36-inch l-.calculated

bapecumdmremr atiatftx deltverY. -&- e9aPd flm*eIbaubeaAct# andinspected in ac~ WttbSpecinoation=-P”118 to verify oodormance to the requtremamta dSecure 5 herein.

5. PREPARATION FOR DIHJVERY

5.1 pac&Urill&,-

r“...)

5.1.1 LeveI A.- Lamtnated rods ar tubes, orparts fabrkXed therefrom, 9hall be packaged f=phymkd - ~kal protection in accordancewith method V’f of Specification MIL-P-116, eitherindividually, in tnmdka, or h cartone a8 requtrd.

Container @@ cadorm to Specification PPP-B-566, PPP-B-676, or PPP-B-626. Container clo-eureahall beaaepecifid~ti a@i-eXepecifioettoo or appendix thereto. The groes wctghtof fiber ccmt4mrs ehail not =c~ n z,~ -Miners 30 pamti.

S. 1.2 @vel C. - Laminated rode or tubes, orparta fabricated therefrom, chall be p8chged in8ccordauce with tbe 8uppbr’u commercial practice.

5.2 PackinQ -

S.2.1 Javel A.- Unba dherwhe qsedfhd,hdnsted rocb end babea, or parts =W8tedtberh, ~ ee specified (SW $. :), wbe fmcA@llt OW-t’ype? WOod-OleGf@--mw~fw, ~~wOOd-0bf4d Termer~ 9v’er~ or Wod-chtedP-_ confor~ to Spocfflc8tt~ ●PP-B-661, PpP-B-@i (ckaa 8), PPP-B-@6 (C- 3),PPP-B-585 (CtiS 3), MIL-B-102W m PPP-B-~1,r--y, at the *- d * ~c$or.~ ~r~ 8Ml kave eaadinera comform -- tO8pecfficaMon MIL-L-IOS47. Caseltners shallbe closed and eealed in ●cctmdance wtth the appen -dia to 6pecffica@on MI-L-L- 10$476caadw@rs f=Mm9aedor~ to 8pecKioatim PPP-lb_6 maybe omitted prwided 811 jofitta ad corners d thek are 9aakdwttb mirdatum 1-1/2 inchwidetapt

MIL-P-79C

conformi~ to Specification PPP- T- 76 or PPP- T-60.Boxes shall be ched ad atra~ in accordancewith the 8pplkaMe box 8pectfkatton or appedixthereto, excefl fiber -s shall be -d wtth tapaa specified h the appeadk to Spcffkation PPP-T-826. Tbe groea uetght of wed or wood-cl~atedboxes stmlt a e- WO poumdaa

5.2*2 ~wel&- Lemtrmt9d rodaandtUbea, orpar%e-W therefrow p- aa Spectfted(see 6. z), ●m be fubed in *maotfc type wod-ckated fiberbmrd, nailed wo@ wkebouad ~cleated plywood or wwxt-cleeted saaeer ~pr cwor-Md boaaa or cka 8 fSber K eadormt~ to ~-iftcm ?PP-B-501 , PPP-B-621 (Cba 1), PPP-B-S85 (dase i or 2 use), PPP-B-401, MIL-B-10~or PPP-B-626, rnlmcttvdy, 84 tbe e@ion of thec~ractor. Boxcfomrea baubease pcuiedtnebeapptte - s~ificatioo or appendtx thereto.7%e#’rOes ni#Itof w’oodor uood cleated boxes ‘ebaunoto %ceedm$nxlmb.

S.a. s ~- ~rodeuxttuim, or- $~ therefroq fmckaged as ●pecifkd(8ee 6. 2), A@ be ~ tn -iners which williuure ac~ by common earr~er and ●de&iWery U ~ination. fRip@q containers eMlcomply $0 tbe thUform Fret@t Cla88tficaUon Rulesor other ~tiona a8 amiable to the mode oftr-poatkm.

5. s -M q. - in addttion to my ●~cffic mark-ing rwuLred by * codmct or o-r or harein,interior and efierior sht~~ co~nera shall bemarbd in accorcknce with Stati MIL-=D-1 29$

6. NOTBS

6,1 lmm_uee. -

8.1,1 Foru. -

6.1.1.1 Molded rode, - Molded rab 8re i*8nAdfor 8 variety d qlpfica- mcll metaaulati~scren, bolts, ad small budhgs or •~eoro wheraelectrical et-ss k - oevere. Tha xkatertal lsnearly aa &n8e ae the com~]e grade of sheets,ad the ●lectrical properties are of approximatelythe ~ Or&r.

8*1.1=2 l!wUIMJ - RofAed tuba are i~e-dfor ap@t~ in cdl kr=, lam~q bushiqp,beuing ~, etc., *= excellent conce*rl -ctty ●nd good pby8ical and electrical charactert8tics- required.

@*l=l*s ~“ ~l-t-D-@-temkd for applic&tba in cd forma, ~ti~ beb-inga, bearing retaiaera, *., * M@er *mity,lower nbr ~m - better amewtonaf 8ta- 9Ml!ty 8re QirWL Mow *S are k9D --ee~rtcaadtitih~~ cbCtrkcd-


MiL- P-79C

mecbnicd properties ●t me mold parti~ llIWwhen the escese rnterid hae been remowt.

6.1.2 TYP8. -

“’”2” %’?%-~ PBE #s itiended for

appl~cati~ sim ar o those for type PBG. ●xmptthat unfkr ●dverec conditio~ of temperature andhumidity PBS poeees-s high dielectric strengthand retativdy km d$ekctric loeees.

‘ “ ’ ”2”2%!!i%%tkz%iixx=:cd~ materand ●lectrbl properttOs.

●

0“’”2’3?%=--~~~~~-s=a vsrtety d ●

ties ●re eubordimte to the requti mechanical prop●rties; that is, for uee in eddy mechanical equtp-ment or for use ae meckMcaJ mem&re of daetrtcalOqolpae --• -~ matertal * rOqutmL&atwhwre theueed sh@drdtib@rSc prop-erties with a corre8gMdhU ●acrtfiee of ~calpropeztks -Id not be warradod. R w isM~ forstructural and electrical 8ppMc8tb9 where m vnote-ture is preee-. Spectd pecauttona must be t8kenif tl. * material h to be tapped or machined p’allelto the Iami-t tons wtthout cracking.

id)

(e}

([)(g){h)(i)

(j)

P~rty value roquiremelda CO?specialSlaesofrodemldtuheebaxt.s).

Tohranees on dtametero of&p GMGrolled tubee,If required (eee S. 3.2. 2.2.1●nd note 3 of table VIII).

mm~i~ requtred (see 3. 3).Fhl(sh requMed (see 3. 4).Requirements and/or drawi~s for ~rta.Levels of ~ckagtng and ~cldag required

(see s. 1 aad 5*a)*Spctd ma- reQutrutbee&s).

6.4 Croee-reference Met d deH-. - Be-cauee of ~ practicea d mral GOm~ agoo-Cks & ~, ttu Cm”rwferaneee *iatatAe XVI am provided for eQutvaAeA &stgnstmad b dn ate d mfe a ndtmtms.

Tabk XVI - ~mi&mmtn?.@am&one

ad hhm.

‘“’”2”4w - I’ype?’?mimh$!endsdmrapplkatiolm 8 m arto thoee d type Pt3c, 8xeOf@that tt pmseseea better electrical propmtiea thmghwith some sacrifice of toughness. B is saitable forfine machini~ operatiom .

“’”’”’fa%%kt%~z:?s:s=-electrica! atrtc propartto8, *m dekctrtc kea, ad st thesame ttme ● good degree d mectwkal ●tre@h,particularity ttmghaeaa.

6“1”2”’ v- -m”’~f”structural, not ● ectrtcal, application and for wewhere the ●bctrtcal proprttea twc been greatlyaubordbted to the required mechardcal properttee.

‘“’”2”’ %P- 7ype GMG b *nded for

mechanical epp Mona requir~ good reoMance toheatand tofbme mewell ae to arct~ Condttbna.

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(a) 7We, mrnber, ~titecf thte8pcificat&m.(b) Fbrm roqdred (BW L 2J.(c) Typ required (see L 2).

Custodiam:Army - sigCNavy - StupeA~r Force - ARDC

Prqlui4 actwtty:Navy - ~iJ=(Proj- 9330-M77)

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acknowidgmwat Ulil b mdld to you Uithia SO dsy8 to lotyou know *t youx 8omunnts u81’smwiwda Bdarebdn#conddored.

No?%:‘m9fom “my aot b d b quad eopioo of domlmomt8, mortor9qtiw’atvq dovi9tk#a& or Cmificatioslof8pecific8ti0a mquiranenta on curte8t Co!atmcta. Co8nmenw mwttod 08 tldi form & not atute OPimply ●xborix9tiomb W8we say ~rticm of the refclwll+ docummlt(s) 0? to aln@ad oO@mctd rquimunb.

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DEPARTMENT OFTHENAVY

rOFFKIAL ●U64MR=PENALTY FOR ●RIVATE USE S200 I BUSINESS REPLY MAIL I

FfRS7 CLASS ●E RMIT No. t2S02 wASM )NGTON D. CJ 4POSTAGE WILL SE PAID BY THE DEPARTMENT OF THE NAVY

1111

Commander, Naval Ship Engineer~ng CenterCode 6124, Center Building

Prince George’a CenterHyattsv~lle, MD 20782


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