Official Answer
Answer
A286 (UNS S66286) is an iron-base superalloy used when a combination of high strength and corrosion resistance is needed at temperatures up to $538^\circ C$ ($1000^\circ F$). While not as strong as Inconel X-750 at the extreme end, it is more cost-effective and provides better oxidation resistance than 17-7PH. It is frequently used in jet engine exhaust assemblies and turbocharger seals where the thermal cycling would cause standard stainless steels to fatigue rapidly due to thermal creep.
