A356 aluminum casting alloy is a 7% Si, 0.3% Mg alloy with 0.2 Fe (max) and 0.10 Zn (max). A356 aluminum casting alloy has very good casting and machining characteristics. A356 aluminum casting alloy is used for aircraft parts, pump housings, impellers, high velocity blowers and structural castings where high strength is required. A356 aluminum casting alloy can also be used as a substitute for...