... in the range of 45-60 percent of copper with ultimate tensile and hardness properties approaching 140 ... and RB 100 respectively.Typical Application for C17510 Nickel Beryllium Copper Alloys:Electrical Industry: Fuse Clips, Switch Parts, Relay ... Diameter & Sizes, Random Mill lengthsAvailable Products (forms):Round bars, Round wires, Round tube,Flat bars, Square bars, Rectangular bars, Hexagon ...