国外阀门材料常用技术标准 高温承压部件用合金钢锻件、延展性极限
牌号 | ||||||||||||||||||
F1 |
F11, 2级 |
F11, 3级 |
F11, 1级 |
F12 | F5 | F5A | F9 | F6 |
F21, 3级 |
F21, 1级 |
F22, 3级 |
F22, 1级 |
F3V | F46 | F22V | F91 | F911 | |
最小延伸率,% 标距2in.[50mm] |
20 | 18 | 18 | 19 | 18 | 19 | 19 | 18 | 18 | 18 | 19 | 18 | 20 | 17 | 40 | 17 | 19 | 16 |
最小断面 收缩率,% |
30 | 35 | 30 | 40 | 25 | 35 | 35 | 35 | 35 | 35 | 35 | 25 | 35 | 35 | 50 | 35 | 40 | 30 |
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