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Super Elastic Alloy Steel Wire 3j21 Wire For Spring Support Customized Service

  • Super Elastic Alloy Steel Wire 3j21 Wire For Spring Support Customized Service
Place of Origin China
Brand Name HUONA
Certification ISO9001
Model Number 3j21
Minimum Order Quantity 1KG
Price Need to negotiate
Packaging Details Cartoon/ Wooden
Delivery Time 7-10 days if in stock
Payment Terms T/T
Supply Ability 2000 Tons/ year

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Product Details
Product Name 3J21 Wire Grade 3j21
Usage For Spring Size Support Customized Size
Service Customization MOQ 1KG
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Product Description
Super elastic alloy steel wire 3J21 for spring 
3J21 wire is made of 3J21 alloy, which is a cobalt - based precipitation - hardening high - elastic alloy. It is widely used in aerospace, precision instruments, medical devices and other fields due to its excellent performance.

Chemical Composition

According to ASTM F1058 standard, the chemical composition of 3J21 is as follows:


Element Content (%)
Co 39 - 41
Cr 19 - 21
Ni 14 - 16
Mo 6.5 - 7.5
Mn 1.7 - 2.3
C 0.07 - 0.12
Be 0.01
Fe Bal.
Si 0.6
P ≤0.015
S ≤0.015

Physical Properties

The physical properties of 3J21 wire are shown in the following table:


Property Value
Density (g/cm³) 8.4
Resistivity (μΩ·m) 0.92
Elastic Modulus (E/MPa) 196000 - 215500
Shear Modulus (G/MPa) 73500 - 83500
Magnetic Susceptibility (K/10⁶) 50 - 1000
Melting Point (℃) 1372 - 1405



Product Features

  • High Elasticity
  • Excellent Fatigue Resistance
  • Good Corrosion Resistance
  • Non - magnetic
  • High - temperature Resistance

Application Fields

  • Aerospace: Used for key springs of engines, diaphragms, precision fasteners, sensor elements, etc.
  • High - end Instruments and Meters: Applicable to tension wires, hairsprings, diaphragms, bellows, precision springs, etc.
  • Medical Devices: Used for elastic components of surgical instruments and components of implanted devices.
  • Precision Machinery and Electronics: Suitable for relay contact springs, connectors, support parts of optical devices, etc.
  • Energy and Petrochemical: Used for special valve springs and elastic parts of down - hole tools.

Product Specifications

The diameter of 3J21 wire usually ranges from 0.05mm to 6.0mm.
Different diameter specifications are suitable for making different components,
such as small - scale precision springs and sensor elements.
Picture

Super Elastic Alloy Steel Wire 3j21 Wire For Spring Support Customized Service 0
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