Form: This specification covers a corrosion and heat resistant steel in the form of bars@ wire@ forgings@ mechanical tubing@ flash welded rings@ and stock for forging@ flash welded rings@ or heading. Application: Primarily for parts@ such as flanges@ cases@ and fasteners@ requiring moderate strength up to 1300??(704?? and oxidation resistance up to 1500??(816??@ particularly those which are formed or welded and then heat treated to develop required properties.