Patent ID: 9496064
Filing Date: 2016-11-15
CPC Classification: B21B,B32B,C22C,C22F,H01B,Y10T

Claim Text:
1. A copper alloy for electric and electronic devices, the copper alloy comprising: 23 mass % to 36.5 mass % of Zn; 0.1 mass % to 0.9 mass % of Sn; 0.2 mass % to less than 1.0 mass % of Ni; 0.001 mass % to less than 0.10 mass % of Fe; 0.005 mass % to 0.1 mass % of P; and a balance including Cu and unavoidable impurities, wherein a ratio Fe/Ni of a Fe content to a Ni content satisfies 0.002≦Fe/Ni<0.7 by atomic ratio, a ratio (Ni+Fe)/P of a total content (Ni+Fe) of Ni and Fe to a P content satisfies 3<(Ni+Fe)/P<15 by atomic ratio, a ratio Sn/(Ni+Fe) of a Sn content to the total content (Ni+Fe) of Ni and Fe satisfies 0.3<Sn/(Ni+Fe)<2.9 by atomic ratio, and R{220} is 0.8 or less, wherein an X-ray diffraction intensity from a {111} plane on a surface of the copper alloy is represented by I{111}, an X-ray diffraction intensity from a {200} plane on the surface of the copper alloy is represented by I{200}, an X-ray diffraction intensity from a {220} plane on the surface of the copper alloy is represented by I{220}, an X-ray diffraction intensity from a {311} plane on the surface of the copper alloy is represented by I{311}, and a fraction R{220} of the X-ray diffraction intensity from the {220} plane on the surface of the copper alloy is