Patent ID: 7491891
Filing Date: 2009-02-17
Classification: C21D,C22C,H01B

Abstract:
1. A composite wire for wire-harness comprising a first element wire which comprises 0.01-0.25 mass % C, 0.01-0.25 mass % N, 0.5-4.0 mass % Mn, 16-20 mass % Cr, 8.0-14.0 mass % Ni, and the balance of Fe and impurities and satisfies that a C+N content is in the range of 0.15 mass %≦C+N≦0.30 mass %, and a second element wire comprising at least one material selected from the group consisting of copper, copper alloy, aluminum, and aluminum alloy, the first element wire and the second element wire being twisted together, wherein the first element wire is drawn in a wire drawing process at a reduction in area of between 5% and 98%, to be adjusted to a predetermined diameter of wire and thereafter is heat-treated at a temperature of between 950° C. and 1,150° C. for a retention time of between 0.5 sec. and 60 sec. so that a tensile strength of the first element wire to be twisted together with the second element wire is in the range of between 800 N/mm