ALUMINUM ALLOY WIRE, ALUMINUM ALLOY STRAND WIRE, COATED ELECTRIC WIRE, WIRE HARNESS, PROCESS FOR PRODUCING ALUMINUM ALLOY WIRE, AND METHOD FOR EXAMINING ALUMINUM ALLOY WIRE

摘要

Provided is an aluminum alloy wire in which tensile strength, elongation, and electrical conductivity are ensured and the ratio of the 0.2% yield strength (YS) to the tensile strength (TS) is low.This aluminum alloy wire has a composition which contains 0.1-1.0 mass% Mg, 0.1-1.2 mass% Si, 0.01-1.40 mass% Fe, 0.000-0.100 mass% Ti, 0.000-0.030 mass% B, 0.00-1.00 mass% Cu, 0.00-0.50 mass% Ag, 0.00-0.50 mass% Au, 0.00-1.00 mass% Mn, 0.00-1.00 mass% Cr, 0.00-0.50 mass% Zr, 0.00-0.50 mass% Hf, 0.00-0.50 mass% V, 0.00-0.50 mass% Sc, 0.00-0.50 mass% Co, and 0.00-0.50 mass% Ni, with the remainder comprising Al and unavoidable impurities, and in which the Mg/Si mass ratio is 0.4-0.8. The aluminum alloy wire has a tensile strength of 200 MPa or greater, an elongation of 13% or higher, an electrical conductivity of 47% IACS, and a ratio of the 0.2% yield strength (YS) to the tensile strength (TS), YS/TS, of 0.7 or less.