SOFT-DILUTE-COPPER-ALLOY MATERIAL, SOFT-DILUTE-COPPER-ALLOY WIRE, SOFT-DILUTE-COPPER-ALLOY SHEET, SOFT-DILUTE-COPPER-ALLOY STRANDED WIRE, AND CABLE, COAXIAL CABLE AND COMPOSITE CABLE USING SAME

摘要

Provided are a soft-dilute-copper-alloy material, a soft-dilute-copper-alloy wire, a soft-dilute-copper-alloy sheet, a soft-dilute-copper-alloy stranded wire, and a cable, a coaxial cable and a composite cable using same. The disclosed soft-dilute-copper-alloy material contains: copper; at least one additional element selected from the group consisting of Ti, Mg, Zr, Nb, Ca, V, Ni, Mn, and Cr; and inevitable impurities as the remainder. The soft-dilute-copper-alloy material is characterized in that the average grain size is at most 20 μm in the surface layer up to a depth of 50 μm from the surface.