AMS4366B Aluminum Alloy, Extruded Profiles (2065-T84), 4.2Cu - 1.2Li - 0.52Mg - 0.32Mn - 0.32Ag - 0.1Zr, Solution Heat Treated, Stress Relieved by Stretching and Artificially Aged

This specification covers an aluminum-lithium alloy in the form of extruded profiles with a maximum cross-sectional area of 19 square inches (123 cm²) and a maximum circle size of 11 inches (279 mm) from 0.040 to 0.499 inch (1.00 to 12.50 mm) in thickness (see 8.6).