Copper alloy sheet having excellent conductivity and flexural coefficient

Copper alloy sheet having excellent conductivity and flexural coefficient

  • CN 104,334,759 B
  • Filed: 03/25/2014
  • Issued: 01/14/2020
  • Est. Priority Date: 03/25/2013
  • Status: Active Grant
First Claim
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1. A copper alloy sheet characterized in that,contains 0.01 to 0.50 mass% in total of one or two kinds of Zr and Ti, the balance consisting of copper and unavoidable impurities, has a tensile strength of 350MPa or more, an A value represented by the following formula of 0.5 or more, and a thermal expansion/contraction ratio in a rolling direction when heated at 250 ℃

  • for 30 minutes is adjusted to 80ppm or less,A=

    2X(111)+X(220)

    X(200)X(hkl)

    I(hkl)/I0(hkl)wherein, I(hkl)And I0(hkl)The diffraction integrated intensity of the (hkl) plane was obtained for the rolled surface and the copper powder by X-ray diffraction method.

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