High-conductivity electrode wire for wire electric discharge machining

摘要

A high-conductivity electrode wire for wire electric discharge machining, which comprises a core having an aggregate structure containing not less than 35% by volume of [111] crystal grain, and a covering layer formed on the core at a covering ratio of 2 to 30% and containing Zn or a Zn alloy with Zn content of not less than 30% by weight. This electrode wire is designed to exhibit a tensile strength (X) of 800 MPa or more, and an electric conductivity (Y) of 30 IACS % or more, a relationship between the X and the Y satisfying the following relational expression of: 13000/(X-600)<=Y<=30000/(X-800).