C | Mn | P | S | Si | Ni | Cr | Mo |
≤0.24 | 0.7-1.6 | ≤0.035 | ≤0.035 | 0.15-0.5 | ≤0.25 | ≤0.25 | ≤0.08 |
板厚mm | 抗伸性能 | *低试验温度℃ | AKV纵向J | ||
ós MPa | ób MPa | δ50 % | |||
≤40 | ≥415 | 550~690 | ≥22 | -68 | ≥27 |
>65~100 | ≥380 | 515~655 | ≥22 | -68 | ≥27 |
>100~150 | ≥315 | 485~620 | ≥20 |
板厚mm | ≤25 | >25~40 | >40~50 | >50~100 |
弯心直径 | 2a | 2a | 2.5a | 2.5 a |
级别 | 钢板状态 | 板厚(mm) | *低冲击试验温度(℃) | Akv(纵向)(J) |
CL1 | 正火 | ≤25 | -62 | ≥20 |
25-65 | -60 | |||
65-75 | -60 | ≥18 | ||
75-100 | -46 | |||
CL2 | 淬火+回火 | ≤65 | -68 | ≥27 |
65-75 | -60 | ≥20 | ||
75-100 | -46 |
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