Patent ID: 9476109
Filing Date: 2016-10-25
CPC Classification: C22C,C22F,H01B

Claim Text:
1. A copper alloy for electronic materials, comprising 1.0% to 2.5% by mass of Ni, 0.5% to 2.5% by mass of Co, and 0.3% to 1.2% by mass of Si, optionally 0.03% to 0.5% by mass of Cr, and optionally at least one member selected from the group consisting of Mg, P, As, Sb, Be, B, Mn, Sn, Ti, Zr, Al, Fe, Zn and Ag in a total amount of 2.0% by mass at the maximum, with the balance being Cu and unavoidable impurities, wherein from the results obtainable by an X-ray diffraction pole figure analysis using a rolled surface as a base, among the diffraction peak intensities of the {111}Cu plane with respect to the {200}Cu plane obtained by β scanning at α=35°, the peak height at a β angle of 90° of the copper alloy is at least 2.5 times the peak height of a standard copper powder, wherein the copper alloy satisfies the following formula: wherein the unit of Ni concentration and the unit of Co concentration is percent (%) by mass, and Kb represents spring bending elastic limit.