C | Si | Mn | S | P | Cr | Al | Ni | Cu | Mo |
0.35~0.42 | 0.20~0.45 | 0.30~0.6 | 允许残余含量≤0.035 | 允许残余含量≤0.035 | 1.35~1.65 | 0.70~1.10 | 允许残余含量≤0.3 | 允许残余含量≤0.30 | 0.15~0.25 |
抗拉强度 σb (MPa) | 屈服强度 σs (MPa) | 伸长率 δ5 (%) | 断面收缩率 ψ (% | 冲击功 Akv (J) | 冲击韧性值 αkv (J/cm2) | 硬度 |
≥980(100) | ≥835(85) | ≥14 | ≥50 | ≥71 | ≥88(9) | ≤229HB |
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