Patent ID: 10902966

Abstract:
This twisted wire conductor 10 for an insulated electrical wire is configured so as to be in a mixed state in which a first conductor 20 and a second conductor 40 are twisted together. The first conductor comprises a specific aluminum alloy: which has an alloy composition that contains, by mass %, 0.2-1.8% of Mg, 0.2-2.0% of Si, 0.01-0.33% of Fe and a total of 0.00-2.00% of one or more elements selected from the group consisting of Cu, Ag, Zn, Ni, Co, Au, Mn, Cr, V, Zr, Ti and Sn, with the remainder comprising Al and unavoidable impurities; which has a fibrous metal structure in which crystal grains extend in one direction; and in which the average value of a dimension t which is perpendicular to the longitudinal direction of crystal grains is 400 nm or less in a cross section parallel to this one direction. The second conductor has a higher electrical conductivity than the first conductor 20 and comprises a metal or alloy selected from the group consisting of copper, copper alloys, aluminum and aluminum alloys. The twisted wire conductor exhibits high electrical conductivity, high strength and excellent bending fatigue resistance, and enables a reduction in weight.