WASPALOY Nickel Cobalt Alloy with Very High Strength at Elevated
Temperatures
WASPALOY is an age hardening austenitic (face-centred cubic)
nickel-based superalloy. Waspaloy alloy is typically used in high
temperature applications, particularly in gas turbines.
Waspaloy is an age-hardenable, nickel-based superalloy with
excellent strength properties through temperatures of roughly 980°C
(1800°F). Other characteristics of Waspaloy include good corrosion
resistance, as well as being relatively impervious to oxidation
making it well suited for service in extreme environments.
Waspaloy has useful strength at temperatures up to 760-870°C
(1400-1600°F), and good oxidation resistance in gas turbine engine
atmospheres up to 870°C (1600°F). The creep rupture strength of
Waspaloy is superior to that of Alloy 718 at temperatures above
620-650°C (1150-1200°F). Short time hot tensile strength is
inferior to RA718 at temperatures up to 730°C (1350°F).
Chemical composition (%)
Cr=18.00~21.00,
Mo=3.50~5.00,
Co=12.00~15.00,
Al=1.20~1.60,
Ti=2.75~3.25,
B=0.003~0.010,
C=0.020~0.100,
Zr=0.02~0.08,
Fe≤2.00,
Mn≤0.10,
Si≤0.15,
P≤0.015,
S≤0.015,
Cu≤0.10,
Ni=remainder
Specifications
AMS 5544, AMS 5708, AMS 5828, EN 2.4654, UNS N07001, Werkstoff
2.4654
Features
High strength
Oxidation resistant to 1750°F
Application
Waspaloy is often used in extreme environments. It is common in gas
turbine blades, seals, rings, shafts and turbine disks.
