CAST ALUMINUM ALLOYS

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Aluminum alloys having improved properties are provided. The alloy includes about 0 to 2 wt % rare earth elements, about 0.5 to about 14 wt % silicon, about 0.25 to about 2.0 wt % copper, about 0.1 to about 3.0 wt % nickel, approximately 0.1 to 1.0% iron, about 0.1 to about 2.0 wt % zinc, about 0.1 to about 1.0 wt % magnesium, 0 to about 1.0 wt % silver, about 0.01 to about 0.2 wt % strontium, 0 to about 1.0 wt % scandium, 0 to about 1.0 wt % manganese, 0 to about 0.5 wt % calcium, 0 to about 0.5 wt % germanium, 0 to about 0.5 wt % tin, 0 to about 0.5 wt % cobalt, 0 to about 0.2 wt % titanium, 0 to about 0.1 wt % boron, 0 to about 0.2 wt % zirconium, 0 to 0.5% yttrium, 0 to about 0.3 wt % cadmium, 0 to about 0.3 wt % chromium, 0 to about 0.5 wt % indium, and the balance aluminum. Methods of making cast aluminum parts are also described.