Form This specification covers a corrosion and heat-resistant nickel alloy in the form of bars@ forgings@ and flash welded rings up to 4.000 inch (101.6 mm)@ inclusive@ in nominal thickness or distance between parallel sides@ and stock of any size for forging or flash welded rings (see 8.6). Application These products have been used typically for parts@ such as flanges@ cases@ and turbine rotors@ requiring high strength at temperatures in the range 800 to 1200 ??(427 to 649 ??@ particularly where welding is involved@ but usage is not limited to such applications.