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国内阀门材料常用技术标准 电站阀门铸钢件技术条件、铸件化学成分_阀门标准
国内阀门材料常用技术标准 电站阀门铸钢件技术条件、铸件化学成分
| 元 素 | 材 料 级 别 | |||
| WC1 | WC6 | WC9 | C12A | |
| 成分，% | ||||
| C | ≤0.25 | 0.05～0.20 | 0.05～0.18 | ≤0.12 |
| Mn | 0.50～0.80 | 0.50～0.80 | 0.40～0.70 | 0.30～0.60 |
| P | ≤0.035 | ≤0.035 | ≤0.035 | ≤0.020 |
| S | ≤0.040 | ≤0.040 | ≤0.040 | ≤0.018 |
| Si | ≤0.60 | ≤0.60 | ≤0.60 | 0.20～0.50 |
| Ni | — | — | — | ≤0.40 |
| Cr | — | 1.00～1.50 | 2.00～2.75 | 8.0～9.5 |
| Mo | 0.45～0.65 | 0.45～0.65 | 0.90～1.20 | 0.85～1.05 |
| Nb | — | — | — | 0.060～0.10 |
| N | — | — | — | 0.030～0.070 |
| 元 素 | 规定的残余元素，% | |||
| Al | — | — | — | ≤0.40 |
| Cu | ≤0.50 | ≤0.50 | ≤0.50 | — |
| Ni | ≤0.50 | ≤0.50 | ≤0.50 | — |
| Cr | ≤0.35 | — | — | — |
| W | ≤0.10 | ≤0.10 | ≤0.10 | — |
| V | — | — | — | 0.18～0.25 |
| 残留元素总量 | ≤1.00 | ≤1.00 | ≤1.00 | — |
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