 A subsequent reaging at 120 °C for 24 hours returns the hardness and strength to or very nearly to T6 temper levels.RRA treatments can be accomplished with many different procedures.The general guidelines are retrogressing between 180–240 °C for 15 min 10 s.

The world's first mass production usage of the 7075 aluminum alloy was for the Mitsubishi A6M Zero fighter.