This datasheet provides information on key alloy metallurgy, processing effects on physical and mechanical properties, and applications characteristics of Al-Si-Mg high-strength casting alloys 356.0 and A356.0. Figures illustrate the variation of Charpy impact energy in A356-T6 castings as a function of solution time; and room-temperature aging characteristics for aluminum alloy 356.0-T4. Growth and hardness curves for aluminum alloy 356.0-T4 are also presented.