Harald Pihl

NIMONIC® alloy 901 (UNS N09901/W.Nr. 2.4662) is an age-hardenable Ni-Fe-Cr superalloy with significant additions of molybdenum, titanium and aluminum. The alloying route for this high performance material may include combinations of vacuum induction melting, vacuum arc remelting and electroslag remelting, according to the final application and the customer’s specification. Typically, the alloy is used for gas turbine engine discs, shafts, rings, casings and seals with a maximum service temperature of around 600°C (1100°F).

UNS S20910, XM-19

UNS S21800

Waspaloy (UNS N07001/W. Nr. 2.4654) is a nickelbase, age hardenable superalloy with excellent hightemperature strength and good corrosion resistance, notably to oxidation, at service temperatures up to 1200°F (650°C) for critical rotating applications, and up to 1600°F (870°C) for other, less demanding, applications. The alloy’s high-temperature strength is derived from its solid solution strengthening elements, molybdenum, cobalt and chromium, and its agehardening elements, aluminum and titanium. Its strength and stability ranges are higher than those typically available for alloy 718.