C | Si | Mn | P | S | Cr | Mo | V | Ti | B |
0.12-0.2 | 0.2-0.4 | 0.4-0.7 | ≤0.035 | ≤0.035 | 1.4-2 | 0.4-0.6 | A | 0.01-0.1 | 0.001-0.005 |
厚度(mm) | 屈服强度AMPa | 抗拉强度MPa |
(50mm) 伸长率,B、C、D≤ |
断面收缩率B、C≤ | 布氏硬度值E |
≤20 | 690 | 760-895 | 18 | 40F | 235-293HBW |
>20-65 | 690 | 760-895 | 18 | 40F,50G | ... |
>65-150 | 620 | 690-895 | 16 | 50G | ... |