供应QSn4-3,锡青铜QSn4-3,QSn4-3铜棒,铜合金QSn4-3,QSn4-3铜合金,QSn4-3锡青铜,QSn4-0.3,QSn4-3锡青铜板,锡青铜QSn4-3板料,锡青铜QSn4-3棒料,QSn43,锡青铜QSn4-3带料,锡青铜QSn4-3线料,青铜QSn4-3,QSn40.3,QSn4-3铜板,QSn4-3铜管,杯士铜QSn4-3,QSn4-3磷青铜线,QSn4-3锡青铜丝,QSn4-3锡青铜棒,***诚信的供应商,厂家***,QSn4-3价格优廉,欢迎订购!牌号化学成分(重量百分比)Chemicaicomposition(WT%)锡(Sn)锌(Zn)铝(Al)硅(Si)磷(P)铁(Fe)铜(Cu)铅(Pb)锑(Sb)铋(Bi)杂质总和％QSn4-33.5～4.52.7～3.3≤0.002≤0.002≤0.03≤0.05余量≤0.02≤0.002≤0.002≤0.2)