Q390GJ钢化学成分
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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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V
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Nb
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Ti
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Als
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Cr
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Cu
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Ni
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Mo
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≤0.20
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≤0.55
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≤1.70
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≤0.025
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≤0.015
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≤0.20
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≤0.07
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≤0.03
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≥0.015
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≤0.3
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≤0.3
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≤0.7
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≤0.5
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