Case Study 1

KERRIUM Aero 4738 is a Waspaloy-type, γ′ precipitation-strengthened nickel-based superalloy designed for demanding high-temperature rotating components. In this turbine disc application, the alloy was selected for its excellent retention of strength at elevated temperatures, good creep and stress-rupture resistance, strong fatigue performance, and reliable oxidation resistance in gas-turbine environments. Compared with conventional Alloy 718-type materials, KERRIUM Aero 4738 offers improved capability for higher-temperature rotating service, making it a suitable choice for turbine discs, compressor discs, shafts, rings, seals, and other critical engine hardware requiring a balance of mechanical integrity, thermal stability, and manufacturability.