牌号 | 化学元素(质量分数)/% | ||||||||||
C | Si | Mn | Cr | Ni | Mo | Nb | V | P | S | Alt | |
Q245R | ≤0.20 | ≤0.35 | 0.50-1.00 | ≤0.025 | ≤0.015 | ≥0.020 |
钢板厚度/mm | 抗拉强度R/(N/mm2) | 屈服强度R/(N/mm2) | 伸长率A/% | 温度/℃ | 冲击吸收能量KV2/J | 180°弯曲试验 弯曲直径(b≥35mm) |
3-16 | 400-520 | ≥245 | ≥25 | 0 | ≥31 | d=1.5a |
>16-36 | 400-520 | ≥235 | ≥25 | 0 | ≥31 | d=1.5a |
>36-60 | 400-520 | ≥225 | ≥25 | 0 | ≥31 | d=1.5a |
>60-100 | 390-510 | ≥205 | ≥24 | 0 | ≥31 | d=2a |
>100-150 | 380-500 | ≥185 | ≥24 | 0 | ≥31 | d=2a |
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