AMS5663P Nickel Alloy, Corrosion- and Heat-Resistant, Bars, Forgings, Rings, and Stock for Forgings and Rings, 52.5Ni - 19Cr - 3.0Mo - 5.1Cb (Nb) - 0.90Ti - 0.50Al - 18Fe, Consumable Electrode or Vacuum Induction Melted, 1775 °F (968 °C) Solution and Precipitation Heat Treated

AMS5663P is the result of a Five-Year Review and update of the specification. The revision prohibits unauthorized exceptions (3.5.1.6, 3.9, 4.4.2, 5.2.1.1, 8.5), updates title to match the scope, updates the description of size and size limits (1.1, 3.5.1.1, 3.5.1.3, Tables 2 and 3, 3.5.1.5.1), revises composition requirement and reporting (3.1, 3.1.1), provides for consistent heat treatment requirements between similar specs and global market (3.4.2, 4.4.1.3), clarifies transverse testing requirements (3.5.1.3.4), clarifies limitations on producing bar from plate (4.4.1.5), adds strain rate control during testing (3.5.1.3.6), adds forging stock options (4.4.3, 8.6), and allows prior revisions (8.4).