单项选择题
A.Cr18％、Ni8％、Mn2% B.Cr12％、Ni3％、Mn10％ C.Cr18％、Ni3％、Mn2％ D.Cr12%、Ni8％、Mn4%
A.1060 B.5083 C.6063 D.ZL102
A.低碳成分 B.高碳成分 C.中碳成分 D.低中碳