常用加工青铜的化学成分CuSn6铜合金板棒线带价格CuSn8组别代号主要化学成分(%)杂质总和(%)锡铝锰其它锡青铜QSn4-32.5-4.5锌2.7-3.3≤0.3QSn4-4-2.53.0-5.0铅1.5-3.5锌3.0-5.0≤0.2QSn6.5-0.16.0-7.0磷0.10-0.25≤0.1QSn6.5-0.46.0-7.0磷0.26-0.40≤0.1铝青铜QA154.0-6.0≤1.6QA176.0-8.0≤1.6QA19-28.0-10.01.5-2.5≤1.7QA19-48.0-10.0≤1.7QA110-3-1.58.5-10.01.0-2.0铁2.0-4.0≤1.7锰青铜QMn1.51.2-1.8≤0.3QMn54.5-5.5≤0.9硅青铜QSi1-3硅0.6-1.10.1-0.4≤0.5QSi3-1硅2.7-3.51.0-1.5≤1.1铍青铜QBe2铍1.80-2.10镍0.2-0.5≤0.5