Waspaloy

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

Nominal composition

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

Chemistry Table[3]

Cr Ni Mo Co Al Ti B C Zr Fe Mn Si P S Cu
MIN 18.00 -- 3.50 12.00 1.20 2.75 0.003 0.02 0.02 -- -- -- -- -- --
MAX 21.00 Balance 5.00 15.00 1.60 3.25 0.01 0.10 0.08 2.00 0.10 0.15 0.015 0.015 0.10

Properties

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.[4]

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).[3]

Uses

Waspaloy is often encountered in extreme environments. It is common in gas turbine blades, seals, rings, shafts and turbine disks.[3] The NIST certified reference material 1243, a standard for X-ray fluorescence spectroscopy, is made from Waspaloy.[5]

References

  1. ↑ Haynes International
  2. ↑ , Data Sheet
  3. ↑ 3.0 3.1 3.2 "Waspaloy Alloy Page". Waspaloy - Rolled Alloys Inc. Rolled Alloys Inc. Retrieved 17 April 2013.
  4. ↑ , Haynes Waspaloy data sheet
  5. ↑ National Institute of Standards and Technology, SRM 1243 - Ni-Cr-Co Alloy UNS N07001 (disk form), 17 Dec 2012.

Rolled Alloys Waspaloy Technical Information