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SAE AMS 4031K-2022
Aluminum Alloy, Sheet and Plate 6.3Cu - 0.30Mn - 0.18Zr - 0.10V - 0.06Ti (2219-O) Annealed or, When Specified, “As Fabricated” (2219-F)
This specification covers an aluminum alloy in the form of sheet and plate 0.020 to 2.000 inches (0.51 to 50.80 mm), inclusive, in nominal thickness, supplied in the annealed (-O) condition (see 8.3 ). When specified, product shall be supplied in the “as fabricated” (-F) temper.
Society of Automotive Engineers [sae]