Form This specification covers a corrosion and heat-resistant steel in the form of investment castings. Application These castings have been used typically for parts requiring oxidation resistance up to 1600 ??(871 ?? but usage is not limited to such applications. At elevated temperatures@ strength of this material is slightly higher than@ and oxidation resistance is similar to@ that of UNS J92500 (CF-3) and J92600 (CF-8) type steels.