国外阀门材料常用技术标准 高温用可熔焊碳钢铸件、化学成分要求
元 素 | 成分(%) | ||
牌号 WCA UNS J02502 |
牌号 WCB UNS J03002 |
牌号 WCC UNS J02503 |
|
碳(C) | ≤0.25A | ≤0.30B | ≤0.25C |
锰(Mn) | ≤0.70A | ≤1.00B | ≤1.20C |
磷(P) | ≤0.04 | ≤0.04 | ≤0.04 |
硫(S) | ≤0.045 | ≤0.045 | ≤0.045 |
硅(Si) | ≤0.60 | ≤0.60 | ≤0.60 |
规定残留元素 | |||
铜(Cu) | ≤0.30 | ≤0.30 | ≤0.30 |
镍(Ni) | ≤0.50 | ≤0.50 | ≤0.50 |
铬(Cr) | ≤0.50 | ≤0.50 | ≤0.50 |
钼(Mo) | ≤0.20 | ≤0.20 | ≤0.20 |
钒(V) |
≤0.03 |
≤0.03 | ≤0.03 |
残留元素总量,最大D | ≤1.00 | ≤1.00 | ≤1.00 |
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