Aluminum alloy sheet and manufacturing method therefor

Details Aluminum alloy sheet and manufacturing method therefor Aluminum alloy sheet and manufacturing method therefor

C - Chemistry, Metallurgy

22

C

C22C 21/08 (2006.01) C22C 21/06 (2006.01) C22F 1/047 (2006.01)

Patent

CA 2189926

An aluminum alloy sheet contains: 2 to 3 wt.% Mg, 0.3 to 0.6 wt.% Cu, 0.08 to 0.15 wt.% Si, 0.005 to 0.15 wt.% Ti, 0.0002 to 0.05 wt.% B, 0.3 wt.% or less Fe as an inevitable impurity, and the balance essentially Al. A manufacturing method comprises the steps of: carrying out at least one homogenization treatment of the ingot at a temperature of from 400 to 580°C; hot-rolling and cold-rolling the ingot to produce a cold-rolled sheet; carrying out at least one heat treatment of the cold-rolled sheet; holding the heat treated cold-rolled sheet at a temperature of from 60 to 150°C for 1 to 48 hours.

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