(1)易切削結(jié)構(gòu)鋼的化學(xué)成分(表2-112)表2-112易切削結(jié)構(gòu)鋼的化學(xué)成分牌號化學(xué)成分/%碳硅錳硫磷鉛鈣Y120.08~0.160.15~0.350.70~1.000.10~0.200.08~0.15——Y12Pb0.08~0.16≤0.150.70~1.100.15~0.250.050.15~0.35—Y150.10~0.18≤0.150.80~1.200.23~0.330.0 (共 2407 字) [閱讀本文] >>