SAE AMS4251C

Действует

Aluminum Alloy Sheet, 2.7Cu - 2.2Li - 0.12Zr (2090-T83), Solution Heat Treated, Cold Worked, and Precipitation Heat Treated

This specification covers an aluminum alloy in the form of sheet 0.040 to 0.249 inch (1.02 to 6.32 mm) in nominal thickness (see 8.7).