牌号 | 级别U.S | 抗拉强度,ksi(MPa) | 最大厚度,in.(mm) |
SA515/SA515M | 60(415) | 60-80(415-550) | 205 |
65(450) | 65-85(450-585) | 205 | |
70(485) | 70-90(485-620) | 205 |
元素 | 成分,% | |||
60(415)级 | 65(450)级 | 70(485)级 | ||
C① | 板厚≤1in.(25mm) | ≤0.24 | ≤0.28 | ≤0.31 |
板厚>1in.-2in.(25~50mm) | ≤0.27 | ≤0.31 | ≤0.33 | |
板厚>2in.~4in.(50~100mm) | ≤0.29 | ≤0.33 | ≤0.35 | |
板厚>4in.-8in.(100~200mm) | ≤0.31 | ≤0.33 | ≤0.35 | |
板厚>8in.(200mm) | ≤0.31 | ≤0.33 | ≤0.35 | |
Mn | 熔炼分析 | ≤0.90 | ≤0.90 | ≤1.20 |
成品分析 | ≤0.98 | ≤0.98 | ≤1.30 | |
P① | ≤0.035 | ≤0.035 | ≤0.035 | |
P① | ≤0.035 | ≤0.035 | ≤0.035 | |
Si | 熔炼分析 | 0.15~0.40 | 0.15~0.40 | 0.15~0.40 |
成品分析 | 0.13~0.45 | 0.13~0.45 | 0.13~0.45 |
项目 | 60(415)级 | 65(450)级 | 70(485)级 |
抗拉强度,ksi(MPa) | 60~80 (415~550) | 65~85 (450~585) | 70~90 (485~620) |
屈服强度①,ksi(MPa) | ≥32(220) | ≥35(240) | ≥33(260) |
伸长率(标距8in或200mm),%② | ≥21① | ≥19① | ≥17① |
伸长率(标距2in或50mm),%② | ≥25① | ≥23① | ≥21① |
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