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stainless steel jis g4305 daly copper 12 5kg lpg cylinder stainless steel pipe sch40 st37 2 st52 hot rolled steel plate astm a335 welded square steel pipe SA633Grade A Spain Electric spark Q310GNHLJ steel accept small trial order hot rolled technique alloy plates p11 American standard A572 Gr 60 H type steel application q295gnh hot rolled corten steel plate42CrMo4
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.
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