元素 | C | Mn | P | S | Si | Cu | Ni | Cr | Mo | V | Nb | Ti | Al |
成分% | ≤0.25 | 0.92~1.62 | ≤0.03 | ≤0.02 | 0.13~0.55 | ≤0.38 | ≤0.28 | ≤0.29 | ≤0.09 | ≤0.09 | ≤0.03 | ≤0.04 | ≥0.020 |
项目 | <12.5mm | ≥12.5mm |
屈服强度 | ≥345 | ≥345 |
抗拉强度 | 570-725 | 560-695 |
延伸率%(200mm) | ≥16 | ≥16 |
延伸率%(50mm) | ≥22 | ≥22 |
-40℃ V型横向冲击功,J | 均值≥27,单值≥20 |