CuZn20黄铜 耐蚀性黄铜棒 黄铜含铜量 CuZn20 brass high strength, good plasticity, in the atmosphere, fresh water and sea water with high corrosion resistance. CuZn20 brass chemical composition CuZn20黄铜强度较高,塑性好,在大气、淡水和海水中有较高的耐蚀性。 CuZn20黄铜化学成份: 铜 Cu :79.0~81.0 锌 Zn:余量 铅 Pb:≤0.03 硼 P:≤0.01 铁 Fe:≤0.10 铍 Sb :≤0.005 铋 Bi:≤0.002 注:≤0.3(杂质)