SAE AMS 5441C
Nickel Alloy, Corrosion- and Heat-Resistant, Bars, Forgings, and Rings Ni - 18Cr - 2.8Mo - 5.5Cb (Nb) - 0.70Ti - 1.50Al - 10Fe - 9Co - 1W Consumable Electrode Remelted or Vacuum Induction Melted 1775 °F (968 °C) Solution Heat Treated, Precipitation-Hardenable