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 rod that has a low 0.2% yield strength (YS) to tensile strength (TS) while ensuring a good balance between tensile strength, elongation and conductivity. An aluminum alloy wire rod of the present invention has a composition comprising Mg: 0.10-1.0 mass%, Si: 0.10-1.20 mass%, Fe: 0.01-1.40 mass%, Ti: 0.000-0.100 mass%, B: 0.000-0.030 mass%, Cu: 0.00-1.00 mass%, Ag: 0.00-0.50 mass%, Au: 0.00-0.50 mass%, Mn: 0.00-1.00 mass%, Cr: 0.00-1.00 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: 0.00-0.50 mass%, Ni: 0.00-0.50 mass%, and the balance: Al and incidental impurities, Mg/Si mass ratio being 0.4 to 0.8. The aluminum alloy wire rod has a tensile strength of 200 MPa or above, an elongation of 13% or above, a conductivity of 47% IACS, and a ratio (YS/TS) of 0.2% yield strength (YS) to the tensile strength (TS) of 0.7 or less.