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Aluminum-alloy clad material and method of manufacturing the same

  • US 10,640,852 B2
  • Filed: 03/28/2018
  • Issued: 05/05/2020
  • Est. Priority Date: 03/30/2017
  • Status: Active Grant
First Claim
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1. An aluminum-alloy clad material comprising:

  • a skin layer clad to and covering at least one surface of a core layer,wherein the core layer is composed of an aluminum alloy containing Cu;

    3.8-4.9 mass %, Mg;

    1.2-1.8 mass % and Mn;

    0.3-0.9 mass %,the core layer has an area number density of microvoids that have a circle-equivalent diameter of 0.5 μ

    m or greater that is 100/mm2 or less, andthe skin layer has an Al purity of 99.5 mass % or greater.

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