Copper alloy sheet for electric and electronic parts
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorsYasuhiro Aruga, Ryoichi Ozaki, Yosuke Miwa
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Abstract
A Cu—Fe—P alloy sheet that is provided with the high strength and with the improved resistance of peel off of oxidation film, in order to deal with problems such as package cracks and peeling, is provided. A copper alloy sheet for electric and electronic parts according to the present invention is a copper alloy sheet containing Fe: 0.01 to 0.50 mass % and P: 0.01 to 0.15 mass %, respectively, with the remainder of Cu and inevitable impurities. A centerline average roughness Ra is 0.2 μm or less and a maximum height Rmax is 1.5 μm or less, and Kurtosis (degree peakedness) Rku of roughness curve is 5.0 or less, in measurement of the surface roughness of the copper alloy sheet in accordance with JIS B0601.
Claims16
A copper alloy sheet for electric and electronic parts comprising:
- Fe:
- 0.01 to 0.50 mass % and P:
- 0.01 to 0.15 mass %, respectively, with the remainder of Cu and inevitable impurities, wherein a centerline average roughness Ra is 0.2 μm or less and a maximum height Rmax is 1.5 μm or less, and Kurtosis (degree of peakedness) Rku of roughness curve is 5.0 or less, in measurement of the surface roughness of the copper alloy sheet in accordance with JIS B0601.
A copper alloy sheet for electric and electronic parts, comprising:
- Fe:
- 0.01 to 0.50 mass % and P:
- 0.01 to 0.15 mass %, respectively, with the remainder of Cu and inevitable impurities, wherein the tensile strength is 500 MPa or more and the hardness is 150 Hv or more, and wherein an r value parallel to the rolling direction of the cooper alloy sheet is 0.3 or more.
A copper alloy sheet for electric and electronic parts, comprising:
- Fe:
- 0.01 to 0.50 mass % and P:
- 0.01 to 0.15 mass %, respectively, with the remainder of Cu and inevitable impurities, wherein the tensile strength is more than 120 GPa and a ratio of the uniform elongation to the total elongation is less than 0.50, the two measurements being determined by a tensile test using a test piece taken the width direction of the copper alloy sheet as the longitudinal direction of the test piece.
A copper alloy sheet for electric and electronic parts, comprising:
- Fe:
- 0.01 to 0.50 mass %;
- P:
- 0.01 to 0.15 mass %;
- and C:
- 3 to 15 ppm, respectively, wherein contents of O and H are regulated so as to be 40 ppm or less and 1.0 ppm or less, respectively.
Dependencies are inferred from the claim text.