Historical
SAE AMS 5768K-2002 (SAE AMS5768K-2002)
Alloy, Corrosion and Heat Resistant, Bars, Wire, Forgings, and Rings, 21Cr 20Ni 20Co 3.0Mo 2.5W 1.0Cb 0.15N 31Fe, Solution and Precipitation Heat Treated ( Reaffirmed: Oct 2006 )
This specification covers a corrosion and heat resistant iron-chromium-nickel-cobalt alloy in the form of bars, wire, forgings, flash welded rings, and stock for forging, flash welded rings, or heading. These products have been used typically for parts, such as turbine rotors, shafts, blades, and bolts, requiring high strength up to 1350 degrees F (732 degrees C) and oxidation resistance up to 1800 degrees F (982 degrees C), but usage is not limited to such applications.
Society of Automotive Engineers [sae]