ALUMINUM-BASED ELECTROCONDUCTIVE MATERIAL, AND ELECTRIC WIRE AND CABLE OBTAINED USING SAME

摘要

An aluminum-based electroconductive material for use in wiring which is used in the moving parts of robots or various devices and on which, for example, repeated flexing is to be imposed; and an electric wire and a cable which are obtained using the material. The aluminum-based electroconductive material contains 0.1-1.0 mass% scandium, with the remainder comprising aluminum and incidental impurities, and is configured of a metallographic structure (10) that has crystal grains (11) having an average grain diameter of 2 µm or smaller and aluminum-scandium precipitate nanoparticles (13) generated at the grain boundaries (12) between the crystal grains (11). The metallographic structure (10) preferably contains crystal grains (11) of 1 µm or smaller in an amount of 15% or larger in terms of sectional-area proportion.