Chemical composition
C(%)
Si(%)
Mn(%)
P(%)
S(%)
Cr(%)
Mo(%)
Thick (mm)
Yield stress (Mpa)
Tensile stress (Mpa)
C(%)(%)
≦0.48 Si(%)(%)
0.15-0.35 ≦0.48 P(%)(%)
≦0.03 S(%)(%)
≦0.03 ≦0.48 ≦0.48 ≦0.48 ≦0.48 ≦0.48
Mechanical Properties
| YieldRp0.2 (MPa) | TensileRm (MPa) | ImpactKV/Ku (J) | ElongationA (%) | Reduction in cross section on fractureZ (%) | As-Heat-Treated Condition | Brinell hardness (HBW) | 329 (≥) | 438 (≥) | 22 | 32 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 |
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Applications
- Chromium Molybdenum Steel Forgings for General use
Country Code
- CNS
Standard
- 4041
Steel Type
SFCM75
Heat treatment
Heat Treatment of steel grade SCM425H
Heat treated : 1893°C - 1254°C
Relate Steel Type
| Steel Type | Standard | Country Code | C(%) | V(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | SFCM75 | 4041 | CNS | ≦0.48 | 0.15-0.35 | 0.30-0.85 | ≦0.03 | ≦0.03 | 0.9-1.5 | SFCM740 | G3221 | JIS | ≦0.48 | 0.15-0.35 | 0.30-0.85 | ≦0.03 | ≦0.03 | 0.9-1.5 | Gr.E | A290 | ASTM | 0.35-0.45 | ≦0.06 | 0.20-0.35 | 0.7-1.0 | ≦0.04 | ≦0.04 | 0.80-1.15 | Gr.F | A290 | ASTM | 0.35-0.45 | ≦0.06 | 0.20-0.35 | 0.7-1.0 | ≦0.04 | ≦0.04 | 0.80-1.15 | Class 3 | A291 | ASTM | ≦0.45 | ≦0.5 | 0.15-0.35 | 0.4-0.9 | ≦0.04 | ≦0.04 | ≦1.25 |
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