牌号 | 化学成分要求(%) | ||||||
SA387Gr5 | C | Mn | P | S | Si | Cr | Mo |
熔炼分析 | ≤0.15 | 0.3-0.6 | ≤0.025 | ≤0.5 | ≤0.5 | 4-6 | 0.45-0.65 |
成品分析 | ≤0.15 | 0.25-0.66 | ≤0.03 | ≤0.55 | ≤0.55 | 3.9-6.1 | 0.4-0.7 |
牌号 | 抗拉强度MPa | 屈服强度MPa | 伸长率 标距200mm | 伸长率 标距50mm | 断面收缩率% |
SA387Gr5 | 515-690 | ≥310 | ...... | 18 | ≥40 |
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