SAE AMS4251D

Действует

Aluminum Alloy Sheet, 2.7Cu - 2.2Li - 0.12Zr (2090-T83), Solution Heat Treated, Cold Worked, and Precipitation Heat Treated (Stabilized: May 2026)

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).