18MnMoNbR 化学成分% | ||||||
C | Si | Mn | P | S | Mo | Nb |
≤0.22 | 0.15~0.50 | 1.20~1.60 | ≤0.020 | ≤0.010 | 0.45~0.60 | 0.025~0.050 |
钢板状态 | 力学性能和冷弯性能 | ||||||
正火加回火 | 板厚(mm) | 抗拉强度 | 屈服强度 | 伸长率 | 温度 | 冲击功 | 冷弯试验180 °b=2a |
6~60 | 570-720 | ≥400 | ≥17 | 0 | ≥41 | d=3a | |
>60~100 | ≥390 |
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