国外阀门材料常用技术标准 高温用可熔焊碳钢铸件、拉伸性能要求
牌号WCA | 牌号WCB | 牌号WCC | |
抗拉强度,ksi[MPa] | 60-85[415-585] | 70-95[485-655] | 70-95[485-655] |
屈服强度A,ksi[MPa] | ≥30[205] | ≥36[250] | ≥40[275] |
延伸率B (标距2in.[50mm]) |
≥24% | ≥22% | ≥22% |
收缩断面率 | ≥35% | ≥35% | ≥35% |
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