• 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

Non-Magnetic 3J21 Co40CrNiMo Superelastic Alloy Cold Rolled Strip

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

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Product Details
Equal Grades UNS R30003, 3J21, Phynox, W.Nr 2.4711 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 Superelastic Alloy


Non Magnetic Superelastic Alloy


Co40CrNiMo Super Elastic Alloy

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Product Description

3J21(Co40CrNIMo)Superelastic Alloy for elastic components


XUNSHI supplies 3J21 alloy for elastic components. 

3J21 is a Co-Cr-Ni-Mo high-elastic alloy, which belongs to 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 we supplied has now been successfully exported to a pan-plug sealing manufacturer in Italy, replacing the elastic materials previously produced in France.


Successful project: Spring energized seal-Italian customer

The customer used Phynox strip from France in the past. After 6 months' strict test in the lab, our 3J21 strip is commented as excellent in performance.


  • Combination of high strength, ductility and good mechanical properties at ambient temperatures
  • Excellent fatigue life
  • Excellent corrosion resistance in numerous environments
  • Non magnetic
  • Age hardenable (Spring Temper only)
  • Good for sea water applications


  • Springs
  • Seal components
  • Medical devices
  • Components for watches
  • Aerospace applications
  • Petro-chemical applications
  • Marine engineering

Typical composition(*% in weight)

C=0.15, Ni=15.50, Co=40.00, Cr=20.00, Mo=7.00, Mn=2.00, Fe=remainder


Forms of supply



Round bar:diameter 20-100mm


The Equal grades: R30003,Phynox(Francce),Elgiloy*,Co40CrNiMo,NAS604PH,K·R·N(Japan),40КHXM(Reussia)

Non-Magnetic 3J21 Co40CrNiMo Superelastic Alloy Cold Rolled Strip 0Non-Magnetic 3J21 Co40CrNiMo Superelastic Alloy Cold Rolled Strip 1Non-Magnetic 3J21 Co40CrNiMo Superelastic Alloy Cold Rolled Strip 2

Non-Magnetic 3J21 Co40CrNiMo Superelastic Alloy Cold Rolled Strip 3Non-Magnetic 3J21 Co40CrNiMo Superelastic Alloy Cold Rolled Strip 4


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.