Process for using scrap aluminum materials

Details Process for using scrap aluminum materials Process for using scrap aluminum materials

C - Chemistry, Metallurgy

22

C

75/83

C22C 21/04 (2006.01) C22C 1/02 (2006.01)

Patent

CA 1176084

ABSTRACT The present invention relates to aluminum alloy products and their production from a mixed melt of scrap aluminum casting alloys and wrought aluminum alloys. The product is a mixed aluminum alloy consisting essentially of a melt of at least one aluminum casting alloy selected from the group consisting of AlSi, AlSiCu and AlSiMg and at least one wrought aluminum alloy selected from the group consisting of AlMn, AlMg, AlMgZn, AlZnMg, AlZnMgCu, AlMgSi and AlCuMg, said casting alloys having a weight ratio to said wrought alloys of from about 1:1 to about 2:1, said melt consisting essentially of from about 1 to about 6 weight percent silicon, from about 1 to about 3 weight percent magnesium, from about 0.5 to about 3 weight percent zinc, from about 0.5 to about 3 weight percent iron, from about 0.3 to about 2 weight percent copper, up to about 1 weight percent manganese, up to about 0.2 weight percent titanium, up to about 0.5 weight percent chromium, up to about 0.5 weight percent lead, up to about 0.5 weight percent bismuth, up to about 0.5 weight percent tin, the remainder aluminum and associated impurities.

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