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.
SAE AS1990D-2016 Referenced Document
ASTM E29-13 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications*, 2024-04-20 Update
EN 515:1993 Aluminium and Aluminium Alloys - Wrought Products - Temper Designations
ISO 2107:2007 Aluminium and aluminium alloys - Wrought products - Temper designations