| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high strength aluminum alloy sheet for a secondary battery large-scaled rectangular can excellent in laser weldability, which has high tensile strength, is excellent in press formability and laser weldability, and can be easily formed into a relatively large-scaled rectangular can for a battery by using a multistage drawing-ironing process, and a method for producing the same. <P>SOLUTION: The high strength aluminum alloy sheet for a secondary battery large-scaled rectangular can excellent in laser weldability is welded with a member to be joined by a laser welding method; contains 0.01-0.20 mass% of Si, 0.05-0.50 mass% of Fe, 0.30-0.80 mass% of Cu, 0.90-1.30 mass% of Mn, and 0.20-0.80 mass% of Mg and comprises the remainder Al and inevitable impurities; and has tensile strength and elongation specified within a predetermined range. The aluminum alloy sheet is formed into, for example, a rectangular can 2 for a battery, and a battery can 1 is constructed by welding a lid member 3 to the open part of the rectangular can 2 by the laser welding method. <P>COPYRIGHT: (C)2013,JPO&INPIT |
