Chemical composition
C(%)
V(%)
Si(%)
Mn(%)
P(%)
S(%)
Cr(%)
Mo(%)
Ni(%)
Cu(%)
C(%)(%)
≦0.45 V(%)(%)
≦0.5 ≦0.45 Mn(%)(%)
0.4-0.9 P(%)(%)
≦0.04 ≦0.45 ≦0.45 ≦0.45 ≦0.45 ≦0.45
Mechanical Properties
| YieldRp0.2 (MPa) | TensileRm (MPa) | ImpactKV/Ku (J) | ElongationA (%) | Reduction in cross section on fractureZ (%) | As-Heat-Treated Condition | Brinell hardness (HBW) | 612 (≥) | 693 (≥) | 44 | 32 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 431 |
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Applications
- Chromium Molybdenum Steel Forgings for General use
Country Code
- ASTM
Standard
- A291
Steel Type
Class 3
Heat treatment
Heat Treatment of steel grade A841 Class3
Heat treated : 1988°C - 1492°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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