• Suzhou Xunshi New Material Co., Ltd
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Contact Person : Allen Sun
Phone Number : +86 18112628895
WhatsApp : +8618112628895

UNS R30003 High Hardness and Strength 3J21 Superelastic Alloy Wire Strip Rod China Origin

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
Supply Ability 500 kg per month

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WhatsApp:0086 18588475571

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Product Details
Equal Grades Elgiloy,Phynox,NAS604PH Forms Of Supply Strip, Wire, Rod, Forging
Spec YB/T 5253-2011 UNS No. R30003
Product Name Superelastic Alloy Package Playwoode Case
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High Hardness Superelastic Alloy


3J21 Super Elastic Alloy


High Strength Superelastic Alloy

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Product Description

High Hardness And Strength 3J21 Superelastic Alloy Wire Strip Rod


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.



3J21 has 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, seismic and shock resistance, excellent corrosion resistance, can work at high temperature 400 °C and also can work normally at low temperature.





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


Chemical compositions (% in weight)

C 0.07~0.12
Mn 1.70~2.30
Si ≤0.60
P ≤0.010
S ≤0.010
Co 39.0~41.0
Cr 19.0~21.0
Ni 14.0~16.0
Mo 6.50~7.50
Ce 0.10~0.15
Fe Balance


3J21 heat treatment

Elastic element: 30%~70% cold strain + 370 °C~480 °C, 2~4 hours, air cold

Axis tip: 90% cold strain + 500 °C~550 °C, 4 hours, air cold

Oxid film appears on the surface of the alloy after heat treatment, and that can be removed by alkali immersion-acid washing method.


Equal grades

Elgiloy, Phynox,NAS604PH,UNS R30003(ASTM F1058),W.Nr 2.4711


Available forms

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: 0.08-2.0mm

Rod diameter 20-100mm

The leading time for wires and rods is around 30 days.

UNS R30003 High Hardness and Strength 3J21 Superelastic Alloy Wire Strip Rod China Origin 0UNS R30003 High Hardness and Strength 3J21 Superelastic Alloy Wire Strip Rod China Origin 1UNS R30003 High Hardness and Strength 3J21 Superelastic Alloy Wire Strip Rod China Origin 2

UNS R30003 High Hardness and Strength 3J21 Superelastic Alloy Wire Strip Rod China Origin 3


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.