| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aluminum alloy plate for a negative pressure can lid capable of achieving uniformity of anisotropy while retaining high formability and high strength despite thinning, and effectively preventing a tab from falling off the can lid. <P>SOLUTION: An enameled plate material with a plate thickness: 0.22-0.25 mm made of aluminum alloy containing Mg: 0.80-1.50%, Mn: 0.80-1.20%, Fe: 0.40-0.60%, Si: 0.20-0.40%, and Cu: 0.15-0.25% and satisfying Mn/Fe=1.5-2.5 and Mg/Mn≥1.0 is configured to have a 45° earing rate of 1.5-3.0% and 0-180° earing rate of 1.0-2.5%, satisfying a formula: -0.5%≤(45° earing rate)-(0-180° earing rate)≤1.5%, and to have a tensile strength of 270-300 MPa and a proof stress of 240-270 MPa in a direction of 0° with respect to a rolling direction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
