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30mn2圓鋼什么價格 30mn2圓鋼什么價格
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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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Ni
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Cu
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20Mn2
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0.17-0.24
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0.17-0.37
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1.40-1.80
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≤0.035
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≤0.035
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≤0.30
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≤0.30
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≤0.30
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30Mn2
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0.27-0.34
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0.17-0.37
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1.40-1.80
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≤0.035
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≤0.035
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≤0.30
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≤0.30
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≤0.30
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35Mn2
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0.32-0.39
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0.17-0.37
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1.40-1.80
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≤0.035
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≤0.035
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≤0.30
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≤0.30
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≤0.30
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