A.≤1.0% B.≤1.5% C.≤2.0% D.≤2.5%
A.110V B.220V C.380V D.1000V
A.2~3 B.3~4 C.4~5 D.5~6
A.Mn B.Cr C.Ni D.Ti
A.80% B.85% C.89% D.93%
A.1.0% B.1.3% C.1.5% D.1.8%
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