Haynes International, Inc.
Fabricable, High Strength, Oxidation Resistant Ni-Cr-Co-Mo-Al Alloys

Abstract:

Ni--Cr--Co--Mo--Al based alloys are disclosed which contain 15 to 20 wt. % chromium, 9.5 to 20 wt. % cobalt, 7.25 to 10 wt. % molybdenum, 2.72 to 3.89 wt. % aluminum, certain minor elemental additions, along with typical impurities, a tolerance for up to 10.5 wt. % iron, and a balance of nickel. These alloys are readily fabricable, have high creep strength, good thermal stability, and excellent oxidation resistance up to as high as 2100.degree. F. (1149.degree. C.). This combination of properties is useful for a variety of gas turbine engine components, including, for example, combustors.