Stress relieving, or the relieving of stress in metals, is a very broad term used for all metals. Stress may be induced by many processes, including work hardening, machining, forming and cold forging.
Aluminum can be aged or hardened after it is solution annealed to the “O” condition and using the proper hardening processes to achieve the desired physical properties for the given application.
Hydrogen Embrittlement Relief refers to the removal of hydrogen from ferrous metal components that have been electroplated. Hydrogen will form and be partially absorbed during the electroplating process at component's surface.