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3J2 belongs to high elasticity alloy with weak magnetic and corrosion-resistant. It adds 5% Mo to the alloy on the basis of 3J1, in order to improve the strength and elasticity, and increase the working temperature of the alloy. It applies to spring, membrane cartridge, elastic diaphragm and other sensitive components working at temperatures below 300 ℃. Such alloy can also be used at low temperatures (e.g. near -200 ℃). Similar alloy's names in different standards:
Beiye designation | China Standard designation | Russia designation |
3J2 | 3J2 | 36HXTЮM5 |
C | ≤0.05 | Ni | 35.00～37.00 |
Si | ≤0.50 | Cr | 12.50～13.50 |
Mn | 0.80～1.20 | Ti | 2.70～3.20 |
P | ≤0.01 | Mo | 4.00～6.00 |
| S | ≤0.01 | Fe | bal. |
| Al | 1.00～1.30 |
(1) Strip
Solution | Aged | |
Tensile Strength | ≤1030 MPa (149.28 ksi) | ≥1422 MPa (206.09 ksi) |
Elongation | ≥20% | ≥3% |
(2) Wire
Cold drawn | Aged | |
Tensile Strength | ≥1226 MPa (177.68 ksi) | ≥1569 MPa (227.39 ksi) |
Elongation | 3% |
Density | 8.0 g/cm3 (0.29 lb/in3) |
Thermal expansion(20~100℃) | (12.0～14.0）×10 -6/K |
Resistivity | 1.0~1.1 µΩ•m |
Strip and Wire
Aging process: Solution temperature 1000℃, holding 15min; Aging temperature 700℃, holding 240min; Water quenched.
