• Suzhou Xunshi New Material Co., Ltd
    Daniel Weree
    Have been business relationship for 3 years, great partner for Nickel Cobalt Alloy!
  • Suzhou Xunshi New Material Co., Ltd
    Carolina Fasio
    On-time delivery. And support is good and fast.
Contact Person : Allen Sun
Phone Number : +86 18112628895
WhatsApp : +8618112628895

3J21 Superelastic Alloy Wire Diameter 0.10-6.0mm Shock Resistance

Place of Origin China
Brand Name XUNSHI
Certification ISO 9001:2015
Model Number 3J21
Minimum Order Quantity 20 kg
Price Available per request
Packaging Details Playwoode case
Delivery Time 45-60 days
Payment Terms T/T, Western Union
Supply Ability 500 kg per month

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WhatsApp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

Product Details
Equal Grades UNS R30003, 3J21, Phynox, Elgiloy Forms Of Supply Strip, Wire, Round Bar, Forging
Spec YB/T 5253-2011 UNS No. R30003
Product Name Superelastic Alloy Package Playwoode Case
High Light

3J21 Grades Superelastic Alloy


Shock Resistance Superelastic Alloy


Diameter 6.0mm Superelastic Alloy

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Product Description

3J21 Superelastic Alloy Wire Diameter 0.10-6.0mm Shock Resistance


3J21 is a deformation reinforced cobalt-based alloy, with good plastic properties and easy to process in the solid solution state. After high strain rate cold processing and time limit treatment, 3J21 can obtain high mechanical and elastic properties, but after the solid solution treatment, the alloy can no longer be strengthened by time limit treatment.

The 3J21 alloy strip materials we supplied have been successfully exported to a seal manufacturer in Italy, replaced the elastic materials previously produced in France.




Chemical composition of 3J21(wt, %)

C Mn Si P S Ni Cr Co Mo Fe
0.07-0.12 1.70-2.30 0.60 max. 0.010 max. 0.010 max. 14.00-16.00 19.00-21.00 39.00-41.00 6.50-7.50 Rem




  • High strength
  • High hardness
  • High elasticity limit
  • High energy storage ratio
  • High fatigue strength
  • Small elasticity lag and rear effect
  • Non magnetic
  • Good wear resistance
  • Shock resistance
  • Excellent Corrosion Resistance
  • Working at high and low temperature condition, high temperature up to 400 °C



3J21 is mainly used for elastic element for aviation required wear resistance, corrosion resistance, seismic, no magnetic, thin wire, strip, spring, and film elements below 400℃, but also for making special bearings with highcorrosion resistance and non magnetic, and 3j21 also used for making small shaft, ball, stamping mold and blade tools.


The Equal grades

  • R30003
  • Phynox(France)
  • Elgiloy*
  • NAS604PH


The available forms of 3J21

Usually, 3J21 is supplied in cold rolled strip and cold pulled wire form, and also can be provided upon customer request in rods and forgings

Wire: 0.10-6.0mm

Strip: 0.05-2.0mm

Rod diameter 20-100mm

The leading time for wires and rods is 30days.

3J21 Superelastic Alloy Wire Diameter 0.10-6.0mm Shock Resistance 03J21 Superelastic Alloy Wire Diameter 0.10-6.0mm Shock Resistance 1

3J21 Superelastic Alloy Wire Diameter 0.10-6.0mm Shock Resistance 2


Suzhou Xunshi New Material Co. Ltd- referred as XUNSHI hereafter, is a professional manufacturer of high-performance alloy products. XUNSHI is engaged in supplying high quality and cost-effective Superalloy, Anti-Corrosion Alloy, Precision Alloy, Special Stainless Steel and Magnetostrictive Material to customers worldwide.



· Highly experienced in alloy industry

· Top experts of industry in China

· Advanced technology and process from top famous institutes in China

· Advanced devices through whole production and inspection process

· Strict quality control system

· Company motto: best service, most value

· Smart sales policy


Service Items of XUNSHI

· Non-standard product research and pre-production

· Fabrication of products

· Cutting, splitting for sheets and plates in stock

· Heat treatment (Solution treatment, aging harden treatment, anneal, spring temper, quench etc.)

· Surface finish (peeling, gridding, polishing)

· Logistics service

· Customized packing service (also for exporting)

· Import and export (XUNSHI is certificated)

· Document translation

· Hard-to-find material sourcing


Customers of XUNSHI

Customers of XUNSHI are all over China (Taiwan and Hong Kong included). And we are exporting to USA, Canada, Italy, UK, Poland, Greece, Russia, Turkey, Iran, Israel, South Africa, South Korea, North Korea, India, Argentina, and Brazil and so on. Customers from 30+ countries trust us.


Where is XUNSHI

A- XUNSHI is in Huaqiao, Kunshan, 215332 China, which is very closed to Shanghai.

B- Xunshi is around 80KM from Shanghai Pudong International Airport (PVG).

C- 20KM from Shanghai Hongqiao Airport

D- 20KM from Shanghai Hongqiao Railway Station

E- You can contact XUNSHI sales for a pickup service.