3J21
3J21 is a deformation-strengthened cobalt-based alloy. It is a Co-Cr-N-Mo series high elastic alloy. The alloy is non-magnetic, corrosion-resistant, highly elastic, high-strength and has good fatigue resistance. It has the characteristics of high hardness, strength, elastic limit, energy storage ratio and fatigue strength. Mainly used to make various instrument springs and other elastic components that work below 400°C
3J21
Corresponding grades [3J240, Co40NiCrMo (China), UNS R30003, Elgiloy, NAS604PH (USA), Nivaflex (Germany), NAS604PH (Japan), Phynox (France), K40HXM, 40KHXM (Russia)]
Product Description:
3J21 is a deformation-strengthened cobalt-based alloy. It is a Co-Cr-N-Mo series high elastic alloy. The alloy is non-magnetic, corrosion-resistant, highly elastic, high-strength and has good fatigue resistance. It has the characteristics of high hardness, strength, elastic limit, energy storage ratio and fatigue strength. Mainly used to make various instrument springs and other elastic components that work below 400°C.
physical properties
Density (g/cm3): 8.4
Resistivity (μΩ·m): 0.92
Elastic modulus (E/MPa): 196000-215500
Shear amount (G/MPa): 73500-83500
Magnetic frequency (K/106): 50-1000
Melting point: 1372-1405℃
Extreme chemical composition:
Fe: balance
C: 0.07-0.12
Mn:1.7-2.3
Cr:19.0-21.0
Co:39.0-41.0
Ni:14.0-16.0
Mo:6.5-7.5
P:0.01max
S：0.01max
Si: 0.6max
Mechanical property:
Type | thickness or diameter (δ Or d)/mm | Property Group | Tensile strength Ób/Mpa | Elongation after break δ/% |
cold rolled strip | 0.20-2.50 | A B | 1177-1471 1471-1765 | ≤5 ≤3 |
Cold drawn wire material | 0.20-5.00 | A B | 1275-1569 1569-1863 |
characteristic:
Non-magnetic, corrosion-resistant, high elasticity, high strength and good fatigue resistance.
Application areas:
1. Suitable for making non-magnetic, corrosion-resistant and high elastic components
2. Wire tensioning, spinning, etc. in precision instruments
form:
Rod, strip, wire