sum23l合金圆钢-易切削钢
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SUM23L牌号:SUM23L标准:JIS ●化学成分:碳 C:≤0.09锰 MN:0.75-1.02磷 P:0.04-0.09硫 S:0.26-0.35铅 Pb:0.10-0.35