Purpose This specification@ in conjunction with the general requirements for steel heat treatment in AMS2759@ establishes requirements for thermal stress relief treatments of parts manufactured from the following materials: a. Carbon and low alloy steels b. Tool steels c. Precipitation hardening@ corrosion resistant and maraging steels d. Austenitic corrosion resistant steels e. Martensitic corrosion resistant steels Application Stress relief of parts is performed to reduce residual stresses and thereby improve dimensional stability@ decrease warpage during subsequent machining@ and facilitate subsequent forming operations. It is also performed prior to plating@ other chemical processing or other processing to prevent cracking during processing. The provisions of this specification revision shall become effective 90 days after publication.