Heat Treatment of all Aluminium forgings is done to achieve desired mechanical properties, higher tensile strength. Heat Treatment ensures that forgings when machined maintain very close tolerance. Heat treatment changes the properties of the alloy by subjecting the forging to a thermal cycle. Heat Treatment temperature cycles are different for each aluminium alloy grade. The heat treat temperature and soaking time determines the hardness, desired microstructure, and tensile strength for the heat-treated parts made from a particular alloy.