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 or flash welded rings. Application: Primarily for parts requiring both corrosion and heat resistance up to 1600 ??(871 ??. At comparable elevated temperatures@ strength of this steel is slightly higher than@ and oxidation resistance is similar to@ that of 18-8 type steels.