Beryllium copper is a kind of supersaturated solid solition copper-based alloy,a non-ferrous alloy with well-.combined mechanical property.physical property,chemical property and corrosion resistance.After solid solutiorand agingtreatment.it boasts high strength.elastic strength.vield strength and fatigue strength ,comparable withthose of special steel,as well as high electrical and heat conductivity,high bardness and wearability.high creepresistance and corrosion resistance lt is mainly applied to workina piece with hiah wearability and biah temperatureresistance.such as various welding electrodes for resitance welder,various mould studded piece(substitute ofsteel)punch head of plastic injecting machine.