Aluminum alloy material, and conductive member, battery member, fastening component, spring component, structural component and cabtire cable each using same

Abstract

An aluminum alloy material which has high yield strength and excellent electric and thermal conductivity and can have a constant break elongation even when the aluminum alloy material has a small diameter. The aluminum alloy material has an alloy composition including 0.05 to 1.50 mass % of Fe, at least one of 0.01 to 0.15 mass % of Si, 0.01 to 0.30 mass % of Cu and 0.01 to 1.50 mass % of Mg, and a remainder made up by Al and unavoidable impurities, and has a fibrous metallic structure in which a plurality of crystal grains extend in line in one direction. The average value of maximum dimensions of the plurality of crystal grains in a direction perpendicular to the length direction is 800 nm or less in a cross section parallel to the aforementioned one direction, and there is no specific void of which the maximum dimension in a direction perpendicular to the length direction is 1.0 μm or more as observed at a center part of the cross section in the thickness direction or the abundance of the specific voids is 10 or less per 10000 μm.