S355J2Z35化学成分
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C
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Si
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Mn
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P
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S
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Cr
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0.15-0.18
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0.30-0.50
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1.30-1.50
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≤0.015
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≤0.004
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≤0.30
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Ni
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Mo
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Cu
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V
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Nb
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Ti
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≤0.50
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≤0.10
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≤0.30
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≤0.15
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≤0.05
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≤0.05
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S355J2-Z35力学性能
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屈服强度Rp0.2
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抗拉强度Rm
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伸长率A
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-20冲击功KV2
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钢板厚度方向拉伸断面收缩率Z
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≥275MPa
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450~600MPa
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≥18%
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≥47J
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≥35%
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