牌号 | 冲击温度/℃ | 厚度/mm | 交货状态 |
BB503C | 0 | 8~50 | 控扎或正火 |
>50~200 | 正火 | ||
BB503D | -20 | 8~40 | 控扎或正火 |
>40~150 | 正火 | ||
BB503E | -40 | 8~100 | 正火 |
C | Si | Mn | P | S | Alt | Nb | Ti | N/ppm |
0.12-0.18 | 0.30-0.60 | 1.25-1.60 | ≤0.020 | ≤0.015 | 0.010-0.050 | 0.010-0.045 | 0.008-0.035 | ≤100 |
厚度/mm | 拉伸试验 | 夏比V型冲击试验 | 180˚弯曲试验b=35mm | |||||
屈服强度 | 抗拉强度 | 伸长率 | 冲击功Akv,J,纵向 | |||||
0℃ | -20℃ | -40℃ | 常温 | |||||
≤16 | ≥325 | 490-610 | ≥21 | ≥47 | ≥47 | ≥47 | ≥34 | d=2a |
>16-40 | ≥315 | d=3a | ||||||
>40-100 | ≥295 | |||||||
>100-150 | ≥285 | ≥20 | ||||||
>150-200 | ≥275 | ≥18 | |
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