牌号 | C | Si | Mn | P | S | Nb | V |
S420NL | <0.22 | <0.65 | 0.95-1.80 | <0.035 | <0.030 | <0.05 | <0.22 |
Al | Ti | Cr | Ni | Mo | Cu | N | |
<0.015 | <0.06 | <0.35 | <0.85 | <0.013 | <0.60 | <0.027 |
厚度 | 屈服强度MPa | 抗拉强度MPa | 小伸长率% | -50℃冲击功 |
≤16 | ≧420MPa | 520-680MPa | 19 | >27 |
16-40 | ≧400MPa | 520-680MPa | 19 | >27 |
40-63 | ≧390MPa | 520-680MPa | 19 | >27 |
63-80 | ≧370MPa | 520-680MPa | 18 | >27 |
80-100 | ≧360MPa | 520-680MPa | 18 | >27 |
100-150 | ≧340MPa | 500-650MPa | 18 | >27 |
150-200 | ≧330MPa | 500-650MPa | 18 | >27 |
200-250 | ≧320MPa | 500-650MPa | 18 | >27 |
250-400 | --- | --- | --- | --- |