钢类 | 等级 | 化 学 成 份 % | |||||||
C | Mn | Si | P | S | ALs | Nb | V | ||
一般强度钢 | A | ≤0.22 | ≥ | 0.10-0.35 | ≤0.040 | ≤0.040 | | | |
一般强度钢 | B | ≤0.21 | 0.60-1.00 | 0.10-0.35 | ≤0.040 | ≤0.040 | | | |
一般强度钢 | D | ≤0.21 | 0.60-1.10 | 0.10-0.35 | ≤0.040 | ≤0.040 | | | |
一般强度钢 | E | ≤0.18 | 0.70-1.20 | 0.10-0.35 | ≤0.040 | ≤0.040 | ≥0.015 | | |
高强度钢 | AH32 | ≤0.18 | 0.70-1.60 | 0.10-0.50 | ≤0.040 | ≤0.040 | ≥0.015 | | |