SAE AMS5661H, 2024 – Nickel-Iron Alloy, Corrosion- and Heat-Resistant, Bars, Forgings, Rings and Stock for Forging or Flash-Welded Rings 42.5Ni – 12.5Cr – 5.8Mo – 2.9Ti – 0.015B – 35Fe (Alloy 901) Consumable Electrode Remelted or Vacuum Induction Melted Solution Heat Treated, Stabilized, and Precipitation Heat Treated

SAE AMS5661, Revision H, March 2024 – Nickel-Iron Alloy, Corrosion- and Heat-Resistant, Bars, Forgings, Rings and Stock for Forging or Flash-Welded Rings 42.5Ni – 12.5Cr – 5.8Mo – 2.9Ti – 0.015B – 35Fe (Alloy 901) Consumable Electrode Remelted or Vacuum Induction Melted Solution Heat Treated, Stabilized, and Precipitation Heat Treated

Form

This specification covers a corrosion- and heat-resistant nickel-iron alloy in the form of bars, forgings, and flash-welded rings 5.0 inches (127 mm) and under in nominal diameter, or maximum cross-sectional distance between parallel sides (thickness), and stock of any size for forging or flash-welded rings.

Application

These products have been used typically for parts, such as turbine discs, shafts, and blades, requiring higher strength than AMS5660 up to 1400 °F (760 °C) and oxidation resistance up to 1600 °F (871 °C), but usage is not limited to such applications.