| C | Si | Cr | Mn | P | S | Ni | Mo | V |
标准 | 0.52~0.60 | 0.2~0.5 | 0.70~0.90 | 0.6~0.90 | ≤0.015 | ≤0.010 | 1.40~1.60 | 0.20~0.30 | 0.05~0.10 |
实际 | 0.55 | 0.30 | 0.78 | 0.72 | 0.009 | 0.005 | 1.45 | 0.22 | 0.09 |