| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum alloy sheet for a battery housing, which can be shaped into a square housing without encountering housing break and worsened appearance by drawing and ironing in multiple stages, does not form cracks or pinholes after being sealed by common laser welding, has good creeping resistance, and not cause swelling during a charge/discharge cycle. SOLUTION: The aluminum alloy sheet comprises 0.8 to 1.5% Mn, 0.2 to 0.8% Mg, above 0.7 to 1.2% Cu, the total amount of Mn, Mg, and Cu (Mn%+Mg%+Cu%) being 2.6% or less, and impurities being controlled so that Si is present in an amount of 0.20% or less, Fe is present in an amount of 0.4% or less, and Zn is present in an amount of 0.1% or less, with the balance comprising Al with inevitable impurities. COPYRIGHT: (C)2007,JPO&INPIT
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