Aluminum Alloy, Extrusion 3.7 Cu-1.15 Li - 0.50 Zn -0.40 Mg, 0.30 Mn - 0.10 Zr Solution Heat Treated, Stress Relieved by Stretching 2% to 5% and Aged AMS4257

Issuing Committee: Ams D Nonferrous Alloys Committee

Rationale: AMS4257A results from a Five-Year Review and update of this specification. This standard is being reviewed as part of the SAE Five-Year Review policy. The committee will look at possible changes to ordering information and other potential updates throughout the standard.