| 化 学 成 分 % |
| C |
Si |
Mn |
P |
S |
Ti |
Nb |
Alt |
| SAPH310 |
≤0.10 |
≤0.30 |
≤0.50 |
≤0.035 |
≤0.035 |
- |
- |
≥0.010 |
| SAPH370 |
≤0.21 |
≤0.30 |
≤0.75 |
| SAPH400 |
≤0.21 |
≤0.30 |
≤1.20 |
≤0.030 |
≤0.025 |
| SAPH440 |
≤1.50 |
| B440QK (BQK440) |
≤0.21 |
≤0.35 |
≤1.80 |
≤0.030 |
≤0.025 |
- |
- |
≥0.010 |
| QStE340TMa |
≤1.30 |
| QStE380TMa |
≤1.40 |
| QStE420TMa |
≤0.12 |
≤0.50 |
≤1.50 |
≤0.030 |
≤0.025 |
≤0.22 |
≤0.09 |
≥0.015 |
| QStE460TMa |
≤1.60 |
| QStE500TMa |
≤1.70 |
| B330CL |
≤0.10 |
≤0.05 |
≤0.50 |
≤0.030 |
≤0.025 |
- |
- |
≥0.020 |
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汽车钢:QStE460TM、QstE500TM、QStE380TM、B590L、B520JJ、B750GJ、
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