板厚mm C Si Mn P S Cr Mo | Cu | Ni |
≤40 ≤0.24 0.15~0.50 0.70~1.35 ≤0.035 ≤0.035 ≤0.25 ≤0.08 | ≤0.35 | ≤0.25 |
>40 ≤0.24 0.15~0.50 1.00~1.60 ≤0.035 ≤0.035 ≤0.25 ≤0.08 |
级别 | 钢板状态 | 板厚( mm ) | 最低冲击试验温度(℃) | Akv (纵向)( J ) |
CL.1 | 正火 | ≤ 25 | -62 | ≥20 |
25-65 | -60 | |||
65-75 | -60 | ≥18 | ||
75-100 | -46 | |||
CL.2 | 淬火+回火 | ≤ 65 | -68 | ≥27 |
65-7575-100 | -60-46 | ≥20 |
级别 | 钢板状态 | 屈服强度σ0.2(MPa) | 抗拉强度σb(MPa) | 延伸率δ4% |
CL.1 | ≥345 | 485-620 | 22 | |
CL.2 | ≥415 | 550-690 | 22 | |
CL.3 | 淬火+回火 | ≥380 | 550-690 | 22 |
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