Form: This specification covers a corrosion and heat resistant nickel alloy in the form of bars@ forgings@ flash welded rings@ and stock for forging@ flash welded rings@ or heading. Application: Primarily for parts@ such as flanges@ cases@ and fasteners requiring high resistance to creep and stress-rupture up to 1300??(704?? and oxidation resistance up to 1800??(982??@ particularly those parts which are formed or welded and then precipitation heat treated to develop required properties.