ГОСТ 801
| 牌號 | 化學成分(質量分數)/% | ||||||||
| C | Si | Mn | P≤ | S≤ | Cr | Ni≤ | Cu≤ | Ni+Cu≤ | |
| ⅢX4 | 0.95~1.05 | 0.15~0.30 | 0.15~0.30 | 0.027 | 0.020 | 0.35~0.50 | 0.3 | 0.25 | 0.5 |
| ⅢX15 | 0.95~1.05 | 0.17~0.37 | 0.20~0.40 | 0.027 | 0.020 | 1.30~1.65 | 0.3 | 0.25 | 0.5 |
| ⅢX15CΥ | 0.95~1.05 | 0.40~0.65 | 0.90~1.20 | 0.027 | 0.020 | 1.30~1.65 | 0.3 | 0.25 | 0.5 |
| ⅢX20CΥ | 0.90~1.00 | 0.55~0.85 | 1.40~1.70 | 0.027 | 0.020 | 1.40~1.70 | 0.3 | 0.25 | 0.5 |
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