Abstract
Abstract RA 253MA is an austenitic heat-resistant alloy with high strength and outstanding oxidation resistance. The use of rare earth metals in combination with silicon provides oxidation resistance to about 2100 F. Nitrogen, carbon and dispersed rare earth and alkali metal oxides provide creep rupture strength comparable to nickel-base alloys. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and machining. Filing Code: SS-469. Producer or source: Rolled Alloys Inc..
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