Historical
SAE AS 1990C-2003 (SAE AS1990C-2003)
Aluminum Alloy Tempers ( Reaffirmed: Nov 2007 )
The purpose of this SAE Aerospace Standard (AS) is to provide a description of the temper nomenclature system for aluminum alloys used in the aerospace industry by combining information from different sources for the benefit of the user.
Society of Automotive Engineers [sae]