Waspaloy

Waspaloy is a registered trademark of United Technologies Corp[1] that refers to an age hardening austenitic nickel-based superalloy. Waspaloy alloy is typically used in high temperature applications, particularly in gas turbines.

Contents

Nominal composition

Nickel 58%, chromium 19%, cobalt 13%, molybdenum 4%, titanium 3%, aluminium 1.4% [2]

Properties

Waspaloy is an age-hardenable, nickel-based superalloy with excellent strength properties through temperatures of roughly 1800°F (980°C). 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. [3]

Waspaloy has useful strength at temperatures up to 1400-1600°F (760-870°C), and good oxidation resistance in gas turbine engine atmospheres up to 1600°F (870°C). The creep rupture strength of Waspaloy is superior to that of Alloy 718 at temperatures above 1150-1200°F (620-650°C). Short time hot tensile strength is inferior to RA718 at temperatures up to 1350°F (730°C). [4]°

Uses

Waspaloy is often encountered in extreme environments. It is common in gas turbine blades, seals, rings, shafts and turbine disks.[4]

References

  1. ^ [1] Haynes International
  2. ^ [2], Data Sheet
  3. ^ [3], Haynes Waspaloy data sheet
  4. ^ a b [4], Rolled Alloys data sheet