AUSTENITIC FERRITIC - OnSiteCatalog.com€¦ · AUSTENITIC UK_Expanite_brochure_05.16..indd 1 14/10/16 14:47. Machining and/or hardening of stainless steels has historically been

Improving wear, galling or corrosion resistance on

stainless steel and titanium

BEYOND THE SURFACE

TITANIUMDUPLEX

MARTENSITIC

FERRITIC

AUSTENITIC

UK_Expanite_brochure_05.16..indd 1 14/10/16 14:47

Machining and/or hardening of stainless steels has historically been with the risk of poor corrosion resistance; but not anymore. Both salt spray and potentiostatic corrosion tests reveal outstanding corrosion resistance of Expanite hardened stainless steel. With Expanite it ’s not only about maintaining corrosion resistance, it ’s about improving!

“Soft against soft” – galling, or adhesive wear, is a pervasive problem for stainless steels – but not necessarily anymore. Studies using the ASTM G98 test clearly shows that for a mating couple of SuperExpanite-treated surfaces of AISI316, galling is completely removed – unprecedented!

Working with stainless steel has always been associated with challenges no matter application or industry. Some of the most common challenges include the low wear and galling resistance caused by the inherited softness of stainless steel – and when trying to mitigate this by applying previously known hardening techniques; loosing corrosion resistance is at risk. Expanite is changing the game; these challenges are now history.

Wear

Galling

Corrosion

BEYOND THE SURFACE

Challenging the steel

-500

-100

300

700

1100

1500

1E-08 0.000001 0.0001 0.01 1

Poten&

al[m

V]

Current[mA/cm2]

AISI316Annealed

AISI316SuperExpanite

Galling observed

Load on Non-treated Expanite-treatedsamples samples samples

3.4 MPa (0.5 ksi) Minor None

7 MPa (1 ksi) Major None


34 MPa (5 ksi) Destructive None


samples samples






Non-treated Expanite-treated samples samples






Based on the impressive surface hardness achieved by Expanite’s nitrocarburizing – up to 1200-1500HV – the wear resistance sets new standards. Results from an ASTM G133 wear test show a 168 times improvement in performance when comparing SuperExpanite hardened AISI316 steel against an untreated reference.


Email: [email protected] Web: www.expanite.com

Goes beyond the surface to reduce leadtime and costs

TAILORED & STANDARD THE BEST PRODUCT

TOTAL COST OPTIMISATION OPENNESS AND PARTNERING

SHORTEST LEAD TIMES

“YOUR PLACE OR MINE?”

• Hardening processes can be tailored matching individual requirements

• The product portfolio includes a wide-range of standard solutions

• The best product gives the longest lifetime

• The shortest lead times reduces inventory and work in progress

• Competitive pricing completes the cost optimization

• Treatment centers in Denmark, Germany and the US

• The possibility to install equipment on-site with customers

• Production sites are ISO9001 certif ied and CQI-9 compliant

• Considering the needs of the end user

• Understanding your process and challenges

• Focusing on knowledge sharing

• The best in wear and corrosion resistance when it comes to surface hardening of stainless steel

• No matter choice of stainless steel, there is a solution

• Processes are running day-to-day

• 2-3 working days lead time is offered

• Standard lead time 6-9 working days


FERRITIC

MARTENSITIC*

DUPLEX

AUSTENITIC*

TITANIUM

BEYOND THE SURFACE

* Including precipitation hardenable steels

HUSK STREGER

AISI:201 / 301 / 303 / 304 / 305 / 308 / 310 / 316 / 904

AISI:420 / 440 and 17-PH / 17-7PH

AISI:403 / 431 / 434

AISI:2205 / 2507

Whatever your stainless steel alloy, there is always an Expanite solution


ExpaniteHigh-T

The purpose of this process is to dissolve nitrogen in the surface of stainless steel to a depth in the range of 0.2-2 mm. Peak hardness ranges from 280HV on austenitic grades to 950HV on martensitic/ferritic grades

ExpaniteLow-TThe purpose of this process is to dissolve nitrogen and carbon in the surface of stainless steel to a depth in the range of 5-45 µm. Peak hardness ranges from 1000-1200HV on austenitic grades to 1200-1800HV on martensitic/ferritic grades

SuperExpaniteThe purpose of this process is to combine ExpaniteHigh-T and ExpaniteLow-T processes to achieve higher load bearing and corrosion properties. Firstly, the ExpaniteHigh-T process is applied to create a deep case detph with moderate nitrogen content. Secondly, the ExpaniteLow-T process is applied to create a high-hardness surface on top of the ExpaniteHigh-T zone.

The Expanite processes does not result in a coating, but a diffusion zone with an increased carbon and nitrogen content. We call this zone expanded austenite, expanded martensite, or simply, Expanite.

HUSK STREGER

AISI:201 / 301 / 303 / 304 / 305 / 308 / 310 / 316 / 904

AISI:420 / 440 and 17-PH / 17-7PH

AISI:403 / 431 / 434

AISI:2205 / 2507

The purpose of the process


Email: [email protected] Web: www.expanite.comEmail: [email protected] Web: www.expanite.com

Titanium – another game-changer

Expanite is, with its brand-new solution forinterstitial hardening of titanium, introducing yet another game-changer within surface hardening.

Like with stainless steel, titanium as a material is suffering from its softness leading to poor wear and galling resistance. This is limiting the use of the material and forcing design engineers to make compromises. However, by applying the ExpaniteHard-Ti process, surface hardness can be increased 8-10 times to approx. 1000HV and thereby a new reality is available.

ExpaniteHard-Ti is a gas-based interstitial hardening process leaving no coating on the surface and thus nothing that can spall off. Titanium nitrides are completely avoided – and thereby also the ‘golden color ’. The actual hardening zone can be tailored to have a case depth of 10-80µm and surfaces can be post-polished to mirror f inish.

Like with everything else Expanite offers, leads time are extremely short and total life cycle cost is in focus.

ASTM G133 – Test results

NEW

-30

-25

-20

-15

-10

-5

0

5

0 1 2 3 4 5

Dept

h (µ

m)

Distance (mm)

Ti Grade 5

ExpaniteHard-Ti


Not just another coating,this is how we do it


Expanite processes...

...are applicable to the most common stainless steel alloys incl. austenitic, martensitic, ferritic and duplex grades.

...are gaseous, thus properties can be tailored to match your exact needs.

...can deliver parts that withstand 1000+ hours in salt spray, while having a controlled surface hardness of 1000-1500HV.

...run on a day-to-day basis, resulting in lead-times signifi cantly lower than alternatives.

...can either be off ered from our treatment centre or implemented on-site, directly in your production line.

As opposed to pvd or similar coating processes, the Expanite process does not result in a coating, but rather, a hardened surface zone with a higher concen-tration of carbon and nitrogen.

The stainless steel surface is covered with a thin oxide fi lm. The oxide fi lm acts as a barrier for the transfer of carbon and nitrogen atoms to the metal.

The gaseous Expanite treatment removes the oxide fi lm and allows an incorporation of carbon and nitrogen atoms in the underlying metal. After the treatment, the oxide fi lm layer is re-established naturally.

Oxide layer Nitrogen Carbon

Stainless steel

Gas

Stainless steel

Hardened zone. Nitrogen + Carbon

Stainless steel

Expanite processes...

...are applicable to the most common stainless steel alloys incl. austenitic, martensitic, ferritic and duplex grades.

...are gaseous, thus properties can be tailored to match your exact needs.

...can deliver parts that withstand 1000+ hours in salt spray, while having a controlled surface hardness of 1000-1500HV.

...run on a day-to-day basis, resulting in lead-times signifi cantly lower than alternatives.

...can either be off ered from our treatment centre or implemented on-site, directly in your production line.

As opposed to pvd or similar coating processes, the Expanite process does not result in a coating, but rather, a hardened surface zone with a higher concen-tration of carbon and nitrogen.

The stainless steel surface is covered with a thin oxide fi lm. The oxide fi lm acts as a barrier for the transfer of carbon and nitrogen atoms to the metal.

The gaseous Expanite treatment removes the oxide fi lm and allows an incorporation of carbon and nitrogen atoms in the underlying metal. After the treatment, the oxide fi lm layer is re-established naturally.

Oxide layer Nitrogen Carbon

Stainless steel

Gas

Stainless steel

Hardened zone. Nitrogen + Carbon

Stainless steel


Don’t just take our words for it

We are working with Expanite because we know that we always get a premium product – we simply get the r ight quali t y at the r ight t ime.Ib Olsen, CEO Strates Maskinfabrik A/S – Denmark

I would just like to take a moment to let you guys know that your SuperExpanite product has drastically improved the lead t ime and quali t y of our products. Fur thermore, working with the talented and helpful Expanite team is a welcomed bonus! Please keep up the great work !Philippe Meyer, Director – PRG Thailand, PRGM Switzerland

We know that when working with Expanite, there is plenty of solid advise and sparring to get – and Expanite teach us things to be done dif ferently. Typical characteris t ics for compa-nies growing successfully.Odd Harry Omholt Quality Control – Semcon Devotek AS – Norway

With Expanite we are get t ing both high quali t y comprehensive quali t y anddocumentation to our satis-fac tion. Commit ted lead-times are always fulf i l led, and we constantly get fast and competent responses to our requests.Ullrich Juling, Projektleitung und Entwicklung – HS Products Engineering – Germany

BEYOND THE SURFACE

With the technolog y that Expanite of fers , we as manufacturer of hydraulic components in stainless steel , have been able to im-prove our products in several impor tant areas. Jens S. Madsen, CEO/Owner SHH Stainless A/S – Denmark

We have been working with Expanite for than 1,5 years now, and besides the innovative treatment technolog y and per formance improvement of our products, we par ticular appreciate their short response time and very fast processing time. Moreover, their support is always ver y competent and they have sympathetic way of communicating. An Tier 1 and OEM-supplier for Automotive Industry – Germany


Goes beyond the surface to make you more competitive in your industry

CONSUMER GOODS

PUMPS & VALVES

AUTOMOTIVE

MEDICALDEVICE

OIL & GAS

INDUSTRIAL

FOOD &BEVERAGE

DEFENSE & AEROSPACE

MARINE



Expanite goes beyond the surface

EXPANITE A/S Industrivænget 34, 3400 Hillerød, Denmark. M: [email protected] P: +45 2819 6443 W: expanite.com

SALES

Claus LøndalP: +45 4014 0875 M: [email protected]

Ole CornowP: +45 3055 0620 M: [email protected]

Holger SelgP: +49 (0) 176 23493574 M: [email protected]

Thomas KuratleP: +41 79 709 15 47 M: [email protected]

Christian DaltonP: +1 330 201 5565 M: [email protected]

AR BrownP: +81 3 3545 2881 M: [email protected]

Rest of worldThomas Abel SandholdtP: +45 2040 7207 M: [email protected]

TREATMENT CENTERS

P: +45 2819 6443

P: +49 7022 2080038

P: +1 330 998 7385

Based on ongoing research since 2000, and founded in 2010 by leading scientists in the fi eld of surface hardening, Expanite has its roots deeply planted in a fact-driven environment.

The philosophy is quite simple; we want to off er the best solutions for surface-hardening of stainless steel! Today, Expanite is changing the game by not only moving the limits of what performance can be expected from stainless steel but also by letting our customers implement the processes directly in their facilities.

Today Expanite has customers from many regions around the world who either appreciate our outstanding service from our treatments centers or who has equipment of their own executing Expanite’s technology. No matter where and how, we guarantee the same fi rst-class product and support, and we are pushing ourselves and our customers to set new standards for the application of stainless steel and titanium within a wide range of industries. Don’t hesitate to approach us if you would like to learn how we can help you.

P: P: P: P: P: P: P:

P: P: P: P: P: P: P: P: P:

P: P: P: P:

SCRATCH RESISTANCE

WEAR RESISTANCE

CORROSION RESISTANCE

FATIGUE RESISTANCE

ISO 9001Certified

Expanite A/S


Documents

AUSTENITIC FERRITIC - OnSiteCatalog.com€¦ · AUSTENITIC UK_Expanite_brochure_05.16..indd 1 14/10/16 14:47. Machining and/or hardening of stainless steels has historically been