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1. (WO2017169910) COPPER ALLOY WIRE FOR ELECTRICAL/ELECTRONIC COMPONENTS

Pub. No.:    WO/2017/169910    International Application No.:    PCT/JP2017/010952
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Sat Mar 18 00:59:59 CET 2017
IPC: C22C 9/00
C22C 9/02
C22C 9/04
C22C 9/05
C22C 9/06
C22C 9/10
H01B 1/02
C22F 1/00
C22F 1/08
Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
株式会社神戸製鋼所
Inventors: SUMINO, Yuya
隅野 裕也
Title: COPPER ALLOY WIRE FOR ELECTRICAL/ELECTRONIC COMPONENTS
Abstract:
This copper alloy wire for electrical/electronic components contains 0.15-0.60% by mass of Cr, 0.01-0.20% by mass of Si, and 0.005-0.30% by mass of Ti with the remainder consisting of Cu and unavoidable impurities, and comprises a deposit of a Cr-containing intermetallic compound. The copper alloy wire for electrical/electronic components is characterized by having a conductivity of not less than 65% IACS, satisfying the formulas (1) and (2), having a longitudinal bow of not more than 20 mm, and having a stress relaxation rate of not more than 15% as determined in a 90-degree direction with respect to the rolling direction of the copper alloy wire after heating at 150ºC for 1000 hours. kb0.1T ≥ 450 MPa...(1) 15% ≤ {(kb0.1T - kb0.1L)/kb0.1L} × 100 ≤ 50%...(2) Where kb0.1L is the spring limit value of the copper alloy wire in a 0-degree direction with respect to the rolling direction, and kb0.1T is the spring limit value of the copper alloy wire in the 90-degree direction with respect to the rolling direction.