Abstract IN-519 was developed primarily for application as centrifugally cast tubes in steam-hydrocarbon reformer furnaces. It has significantly higher stress-rupture properties than HK-40 (25Cr-20Ni), which is most commonly used for such components. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: SS-246. Producer or source: Abex Corporation, Engineered Products Division.