Copper Beryllium : CuBe2 UNS C17200 CuBe2 Pb UNS C17300 CuCo2Be UNS C17500 CuCoNi1Be Beryllium Copper Rod Copper-beryllium are a kind of copper alloy with pretty good combination property . It has higher strength ,hardness , elastic limit and small elastic hysteresis and good elastic stability , conductivity ,thermal conductivity ,abrasion resistance , corrosion resistance , fatigue durability, ...