INCOLOY alloy 803 is a high-temperature corrosion-resistant, nickel-iron-chromium alloy, developed by Inco Alloys International for pyrolysis in high-severity ethylene furnaces, and for other petrochemical applications where high levels of oxidation-, carburization-, and/or sulfidation-resistance are important. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on high temperature performance as well as joining. Filing Code: SS-559. Producer or source: Inco Alloys International Inc.