国外阀门材料常用技术标准 高温承压部件用合金钢锻件、拉伸性能要求(续)
铁素体钢 | |||||||||
牌号 | |||||||||
F21、3级 | F21、1级 | F22、3级 | F22、1级 | F91 | F911 | F3V | F3VCb | F22V | |
拉伸强度 psi[Mpa] |
75000-100000 [515-690] |
60000-85000 [415-585] |
75000-100000 [515-690] |
60000-85000 [415-585] |
85000-110000 [585-760] |
90000-120000 [620-830] |
85000-110000 [585-760] |
85000-110000 [585-760] |
85000-110000 [585-760] |
屈服强度,≥ psi[Mpa] |
45000 [310] |
30000 [205] |
45000 [310] |
30000 [205] |
60000 [415] |
64000 [440] |
60000 [415] |
60000 [415] |
60000 [415] |
延伸率,标距, 2in[50mm],≥% |
19 | 20 | 19 | 20 | 20 | 20 | 18 | 18 | 18 |
断面收缩率,≥ % |
40 | 45 | 40 | 45 | 40 | 40 | 45 | 45 | 45 |
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