Electrode wire for electrical discharge machining apparatus

摘要

It is an object of the invention to provide an electrode wire for an electrical discharge machining apparatus, which is low-priced in cost of production, has sufficient conductivity and strength at high temperature and is suited for improving the speed of electrical discharge machining. Cu-Zn alloy covering layer is formed around a core metallic wire formed of Cu-0.02 to 0.2 Zr alloy or Cu-0.15 to 0.25 Sn-0.15 to 0.25 In alloy.