Title: Aluminium alloy composition and methods of manufacture
Application Number: 96193466 Application Date: 1996.02.27
Publication Number: 1182457 Publication Date: 1998.05.20
Approval Pub. Date: 2001.06.13 Granted Pub. Date: 2001.06.13
International Classifi-cation: C22C21/00;C22F1/04
Applicant(s) Name: Alcan International Limited Address:
Inventor(s) Name: T. L. Davisson;D. N. Reesor;S. K. Nadkarni
Attorney & Agent: lu xinhua
Abstract:
    The invention provides a new aluminum-based alloy having properties which mimic homogenized DC cast 3003 alloy, and a low-cost method for manufacturing the alloy. The alloy contains 0.40% to 0.70% Fe, 0.10% to less than 0.30% Mn, more than 0.10% to 0.25% Cu, less than 0.10% Si, optionally up to 0.10% Ti, and the balance Al and incidental impurities. The alloy achieves properties similar to homogenized DC cast 3003 alloy when continuously cast, followed by cold rolling and, if desired, annealing at final gauge. Surprisingly, no other heat treatments are required.
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