●ZCuPb17Sn4Zn4特性及適用范圍:ZCuPb17Sn4Zn4(17-4-4)耐磨性和自潤(rùn)滑性能好,易切削、鑄造性能差?!馴CuPb17Sn4Zn4化學(xué)成份:銅 Cu :其余錫 Sn :3.5~5.0鋅 Zn:2.0~6.0鉛 Pb:14.0~20.0磷 P:≤0.05(雜質(zhì))鋁 Al:≤0.05(雜質(zhì))鐵 Fe:≤0.4(雜質(zhì))硅 Si :≤0.02(雜質(zhì))銻 Sb :≤0.3(雜質(zhì))注:雜質(zhì)總和≤0.75