Forging Tool Steel Alloy Steel Bar SAE4140
Perform Standard: GB/T 3077-1999
Grade:1.7225, SCM440, SAE4140, 42CrMo
1. Chemical Composition (%)
| C |
Si |
Mn |
Cr |
Mo |
P |
S |
Ni |
| 0.38~0.45 |
0.17~0.37 |
0.60~0.90 |
0.90~1.20 |
0.15-0.25 |
≤0.018 |
≤0.030 |
≤0.012 |
2. Mechanical Properties
Tensile strength:σb (MPa):≥1080(110)
Yield strength:σs (MPa):≥930(95)
Elongation:δ5 (%):≥12
Section shrinkage:ψ (%):≥45
Impact work:Akv (J):≥63
Impact toughness value:αkv (J/cm²):≥78(8)
3. Ready Stock
Round Bar: diameter 14-460mm.
All the sizes as require can be customerized as fresh production with MOQ.
4. Delivery Condition
1) Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.
2) Annealing:HBS<=235.
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