This specification covers an aluminum alloy in the form of hand forgings 17 inches (432 mm) and under in nominal thickness, and rolled rings up to 6 inches, incl (152 mm, incl) in nominal thickness at the time of heat treatment (see 8.5).
SAE AMS4144G-2020 history
2020SAE AMS4144G-2020 Aluminum Alloy, Hand Forgings and Rolled Rings 6.3Cu - 0.30Mn - 0.18Zr - 0.10V - 0.06Ti (2219-T852/T851) Solution Heat Treated, Mechanically Stress Relieved, and Precipitation Heat Treated