锌(Zn)余量,
铅(Pb)≤0.1,
铁(Fe)≤1.0,
锑(Sb)≤0.005,
磷(P)≤0.1,
铋(Bi)≤0.002,
铜(Cu)57.0～60.0,
锰(Mn)1.0～2.0,
杂质总和%≤1.2