(1) Before finishing to final dimensions, repeatedly heating a ferrous or nonferrous part to or
slightly above its normal operating temperature and then cooling to room temperature to ensure
dimensional stability in service. (2) Transforming retained austenite in quenched hardenable
steels, usually by cold treatment . (3) Heating a solution-treated stabilized grade of austenitic
stainless steel to 870 to 900 °C (1600 to 1650 °F) to precipitate all carbon as TiC, NbC, or TaC
so that sensitization is avoided on subsequent exposure to elevated temperature.