Importance

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Abstract

An aluminum alloy for casting into a component, such as an automotive vehicle component, is provided. The aluminum alloy includes a reduced amount of silicon (Si), specifically 0.1 weight percent (wt. %) to less than 7.0 wt. %, and preferably 4.0 wt. % or less, to achieve improved ductility and elongation. The aluminum alloy can also include additional alloying elements to achieve desired properties. For example, antimony, calcium, and/or bismuth can be included to counter any detrimental effect of the low silicon content on hot cracking behavior. Zinc can be added to increase strength; and cerium can be added to further increase ductility. The aluminum alloy is typically formed by modifying recycled wrought aluminum, such as a 5000 series or 6000 series aluminum alloy, or by modifying a recycled cast 300 series aluminum alloy.

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First Claim