UCI-198 is best described as an HP alloy modified with niobium and with microalloying by titanium and rare-earth elements. The alloy was developed to produce increased creep resistance in furnace tube applications. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, machining, and joining. Filing Code: SS-770. Producer or source: Ultra-Cast Inc.