CENTRALLOY 4859 is a cast austenitic iron base alloy with 32% nickel and 20% chromium plus niobium. Despite a low carbon content it has a very stable austenitic structure, sufficient stress rupture strength, excellent thermal shock resistance, and is not susceptible to embrittlement. CENTRALLOY 4859 is the cast version of alloy 800H. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on corrosion resistance as well as casting and joining. Filing Code: SS-621. Producer or source: Centracero S.A.