• 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
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3J21 Superelastic Alloy For Elastic Component Strip Thickness 0.05-2.50mm

Place of Origin China
Brand Name XUNSHI
Certification ISO 9001
Model Number 3J21
Minimum Order Quantity 20kg
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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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
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Product Description

3J21 Superelastic Alloy for Elastic Component Strip Thickness 0.05-2.50mm



A-ONE ALLOY supplies 3J21 alloy for elastic components.


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