ALUMINUM ALLOY CONDUCTOR, ALUMINUM ALLOY TWISTED WIRE, COATED ELECTRIC WIRE, WIRE HARNESS, AND PRODUCTION METHOD FOR ALUMINUM ALLOY CONDUCTOR

摘要

An aluminum alloy conductor or the like used as a conductor of an electric wiring structure that has an improved impact resistance and bending fatigue resistance while ensuring strength, elongation and conductivity equivalent to the related art products, even when used as an extra fine wire having a diameter of strand of less than or equal to 0.5 mm is provided. An aluminum alloy conductor of the present invention has a composition consisting of 0.10-1.00 mass% Mg; 0.1-1.0 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; 0.00-0.50 mass% Ni; and the balance being Al and incidental impurities, wherein a dispersion density of an Mg 2 Si compound having a particle size of 0.5 µm to 5.0 µm is less than or equal to 3.0 × 10 -3 particles/µm 2 , and each of Si and Mg at a grain boundary between crystal grains of a parent phase has a concentration of less than or equal to 2.00 mass%.