This specification covers a premium aircraft-quality steel in the form of bars, forgings, mechanical tubing, flash welded rings up through 6.000 inches (152.40 mm), and stock for forging or flash welded rings.
SAE AMS6511C-2023 history
2023SAE AMS6511C-2023 Steel, Maraging, Bars, Forgings, Mechanical Tubing, Rings, and Stock for Forging and Rings 18Ni - 8.5Co - 3.2Mo - 0.20Ti - 0.10Al Double Vacuum Melted, Annealed