Patent ID: 6918970

Claim:
A cast article from an aluminum alloy, which has improved mechanical properties at elevated temperatures, the cast article having the following composition in weight percent: Silicon 6.0-25.0 Copper 5.0-8.0 Iron 0.05-1.2 Magnesium 0.5-1.5 Nickel 0.05-0.9 Manganese 0.05-1.2 Titanium 0.05-1.2 Zirconium 0.05-1.2 Vanadium 0.05-1.2 Zinc 0.05-0.9 Strontium 0.001-0.1 Phosphorus 0.001-0.1 Aluminum Balance wherein the silicon-to-magnesium (Si/Mg) ratio is 10-25, and the copper-to-magnesium (Cu/Mg) ratio is 4-15.