牌号 | 厚度mm | C | Si | Mn | P | S |
SM400A | ≤50 | ≤0.23 | — | ≥2.5*C | ≤0.035 | ≤0.035 |
50-200 | ≤0.25 | |||||
SM400B | ≤50 | ≤0.20 | ≤0.35 | 0.60-1.40 | ≤0.035 | ≤0.035 |
50-200 | ≤0.22 | |||||
SM400C | ≤100 | ≤0.18 | ≤0.35 | ≤1.40 | ≤0.035 | ≤0.035 |
牌号 | 屈服强度MPa | 抗拉强度MPa | 伸长率 | |||||||
钢板的厚度mm | 钢板的厚度mm | 钢板的厚度mm | A% | |||||||
≤16 | 16-40 | 40-75 | 75-100 | 100-160 | 160-200 | ≤100 | 100-200 | |||
SM400A | ≥245 | ≥235 | ≥215 | ≥215 | ≥205 | ≥195 | 400-510 | 400-510 | ≤5 | ≥23 |
SM400B | ≥245 | ≥235 | ≥215 | ≥215 | ≥205 | ≥195 | 5-16 | ≥18 | ||
SM400C | ≥245 | ≥235 | ≥215 | ≥215 | — | — | 16-50 | ≥22 | ||
>40 | ≥24 |
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