Aluminum Automobile Parts Casting comes from recycled aluminium alloy. Aluminum alloy has the property of corrosion resistance, which helps prolong the life of an automobile. Under natural conditions, steel and iron components are easily corroded by moisture or other substances in the air. Aluminum Automobile Parts Casting are formed by pouring molten metal into moulds that have been shaped by a pattern of the desired final product. Three common types of moulding methods are used to produce castings: die casting, permanent mould casting, and sand casting.