C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 21/00 (2006.01) B21C 37/06 (2006.01) B21D 51/26 (2006.01) B65D 1/02 (2006.01) C22F 1/04 (2006.01)
Patent
CA 2302557
An aluminum alloy composition having an unusually high iron and silicon content, which is particularly improved by manganese additions contains preferably 0.5 to 1.1% wt Fe, preferably 0.3 to 0.7% wt Si, between 0.005 to 0.03% wt Ti, with the iron to silicon ratio maintained between 1.8 and 2.2:1. Most preferably, the alloy contains 0.10 to 0.8% wt manganese. A nominal alloy composition is as follows: 0.8% Fe, 0.4%Si, 0.015% Ti, and 0.4% Mn. The alloy is cast between a pair of cooling molds to produce a cast ingot, the ingot is hot rolled and subsequently cold rolled to thickness reductions of at least 25% and at most 70%, blanks are punched from the cold rolled sheet and the blanks are annealed at temperatures exceeding 350°C but less than 525°C and are subsequently deformed by impact extrusion to form long-necked cans which are stowed at temperatures as high as 275°C.
Forrest Delwyn L.
Fulton Clarence W.
Algoods Inc.
Gowling Lafleur Henderson Llp
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