QBe0.4-1.8铍青铜化学成分QBe0.3-1.5铍青铜力学性能QBe1.9铍青铜牌号对照表T1纯铜T2纯铜T3纯铜TU0无氧铜板TU1无氧铜TU2无氧铜TP1磷脱氧铜TP2磷脱氧铜TAg0.1银铜合金H96黄铜板H90黄铜板H85黄铜板H80黄铜板H70黄铜板H68黄铜板H65黄铜板H63黄铜板H62黄铜板H59黄铜板HNi65-5镍黄铜HNi56-3镍黄铜HPb89-2铅黄铜HPb66-0.5铅黄铜HPb63-3铅黄铜HPb63-0.1铅黄铜CuBe1.7环保铜合金CuBe2批发价格)