Aluminium alloy plate for battery case and its manufacturing method

Aluminium alloy plate for battery case and its manufacturing method

  • CN 100,500,901 C
  • Filed: 10/17/2003
  • Issued: 06/17/2009
  • Est. Priority Date: 10/18/2002
  • Status: Active Grant
First Claim
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1. aluminium alloy plate for battery case, it is characterized in that, contain that the above 1.5 quality % of Mn:

  • 1.0 quality % are following, the above 0.75 quality % of Mg;

    0.32 quality % is following, the above 0.52 quality % of Cu;

    0.32 quality % is following, Si;

    0.05~

    0.25 quality %, Fe;

    0.2~

    0.5 quality % and comprise the remaining Al of portion and impurity and constituting, have the composition that satisfies 3Cu (quality %)<

    Mn (quality %)+Mg (quality %);

    And under 90 ℃

    temperature condition, the creep strain under the state of the stress of 200 hours 100MPa of load is below 0.4%.

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