6xxx Alloy With High Recycled Material Content
AssigneeKaiser Aluminum Fabricated Products, LLC
InventorsWalter B. Gerberick, Robert A. Matuska
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Abstract
The present invention is directed to a 6xxx series aluminum alloy composition, comprising, consisting essentially of, or consisting of (by weight %) of 0.5-1.5% Si, 0.1-0.7% Cu, 0.5-1.5% Mg, 0.3-1.2% Zn, 0.05-0.35% Cr and allowable impurities of 0.8% Fe, 0.8% Mn, 0.15% Zr, 0.15% Ti, with other elements restricted as unavoidable impurities limited to 0.05% each and 0.15% total with the balance being aluminum. This 6xxx series aluminum alloy is capable of being produced with high amounts of post-consumer recycled material which significantly reduces environmental impact from producing this material, while still meeting and in most cases exceeding material attribute requirements for general engineering applications.
Claims13
A 6xxx series aluminum alloy having a composition comprising, (by weight %):
- 0.5-1.5% Si;
- 0.1-0.7% Cu;
- 0.5-1.5% Mg;
- 0.3-1.2% Zn;
- 0.050-0.35% Cr;
- ≤0.8% Fe;
- ≤0.8% Mn;
- ≤0.15% Zr;
- ≤0.15% Ti;
- with other elements restricted as unavoidable impurities limited to 0.05% each and ≤0.15% total with the balance being aluminum.
Dependencies are inferred from the claim text.