锅炉管道附件承铸钢件技术条件 化学成分
钢 号 | 化 学 成 分 % | 应用范围 | |||||||
C | Mn | Si | Cr | Mo | V | S | P | ||
ZG200-400 | ≤0.20 | ≤0.80 | ≤0.50 | ≤0.35 | ≤0.20 | ≤0.05 | ≤0.04 | ≤0.04 |
PN≤6.3MPa t≤450℃ |
ZG230-450 | ≤0.30 | ≤0.90 | ≤0.50 | ≤0.35 | ≤0.20 | ≤0.05 | ≤0.04 | ≤0.04 | t≤450℃ |
ZG20CrMo | 0.15~0.25 | 0.50~0.80 | 0.20~0.45 | 0.5~0.80 | 0.40~0.6 | — | ≤0.04 | ≤0.04 | t≤510℃ |
ZG20CrMoV | 0.18~0.25 | 0.40~0.70 | 0.17~0.37 | 0.9~1.2 | 0.50~0.70 | 0.2~0.30 | ≤0.03 | ≤0.03 | t≤540℃ |
ZG15Cr1Mo1V | 0.14~0.20 | 0.40~0.70 | 0.17~0.37 | 1.20~1.70 | 1.00~1.20 | 0.2~0.40 | ≤0.03 | ≤0.03 | t≤570℃ |
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