20Cr2Ni4 alloy carburized steel
20Cr2Ni4 steel is a high strength alloy carburized steel with good comprehensive mechanical properties. Its hardenability, strength and toughness are better than those of 12crni3 steel. The forging temperature is 1200 ℃, the initial forging temperature is 1150 ℃, the final forging temperature is more than 850 ℃, and slow cooling after forging. If the grains of 20Cr2Ni4 steel are coarse after forging, the coarse martensite structure will be obtained after quenching even after normalizing and subsequent carburizing.
| GB | GBT | AISI |
| 20Cr2Ni4 | G20Cr2Ni4 | 3316 |
20Cr2Ni4 steel mechanical properties:
Tensile strength σ B (MPA): ≥ 1175
Yield strength σ s (MPA): ≥ 850
Reduction of area ψ (%): ≥ 45
Impact toughness value α kV (J / cm2): ≥ 78 (8)
