C5D2優(yōu)質(zhì)碳素結(jié)構(gòu)鋼 詳細(xì)描述: 碳C: ≤0.07 硅Si: ≤0.30 錳Mn:0.30-0.50 磷P: ≤0.020 硫S: ≤0.025 鉻Cr: ≤0.10 鎳Ni: ≤0.10 鉬Mo:≤0.05 銅Cu:≤0.15 鋁Al:≤0.01 氮N: ≤0.007
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