... . C17200 alloy contains appr. 2% of beryllium and achieves its ultimate tensile strength can exceed 200 ksi ... for C17200 Beryllium Copper Alloys:Electrical Industry: Electrical Switch and Relay Blades, Fuse Clips, Switch Parts, Relay parts ... : Pumps, Springs, Electrochemical, Shafts, Non Sparking Safety Tools, Flexible Metal Hose, Housings for Instruments, Bearings, Bushings, Valve Seats, Valve Stems ...