| 摘要 |
PROBLEM TO BE SOLVED: To produce a low-cost aluminum alloy sheet low in the content of Mg while satisfying the required characteristics for a cover material such as prescribed strength, formability and cover openability and to provide a method for producing it. SOLUTION: This aluminum alloy sheet contains, by weight, 1.2 to 1.9% Mg, 0.25 to 0.48% Mn and 0.25 to 0.50% Fe, furthermore contains at least one kind selected from the group consisting of 0.02 to 0.15% Cu, 0.05 to 0.30% Si, 0.03 to 0.50% Zn and 0.02 to 0.30% Cr, and the balance Al with inevitable impurities.
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