42CrMo4
GB/T 3077 42CrMo4 alloy steel
Hardness: <=217HBW
Thermal processing Temperature1050-850
Heat Treatment: Annealed: 680-720°C
Normalized: 840-880°C
Quenched: 820-850°Cfor water, 830-860°C for oil
Tempered: 540-680°C
42CrMo4 alloy steel Chemical composition %:
C |
Si |
Mn |
P |
S |
Cr |
Mo |
0.38- 0.45 |
max 0.4 |
0.6 - 0.9 |
max 0.025 |
max 0.035 |
0.9 - 1.2 |
0.15 - 0.3 |
GB/T 3077 42CrMo4 Mechanical properties:
Yield |
Tensile |
Impact |
Elongation |
252 (≥) |
877 (≥) |
24 |
14 |
GB/T 3077 42CrMo4 Applications:
To manufacture high strength and conditioning section part that request more than 35CrMo, such as locomotive traction gear, supercharger gear. Connecting rod and spring clip, can also be used for oil drill pipe joints below 2000m deep.
- carbon low alloy steel
- Shipbuilding steel plate
- Weathering steel plate
- Boiler pressure vessel steel
- Gas cylinder steel
- Alloy Steel
- Stainless steel
- Pipeline steel
- Section steel
- A283Grade-C steel plate
- AH36 Steel Plate