RMI 5A1-2.5Sn ELI (ELI = Extra Low Interstitials) is an alpha titanium alloy that was developed for use at cryogenic temperatures. It has a guaranteed minimum yield strength of 100,000 psi at room temperature with good ductility and formability; its yield strength and elongation increase substantially as temperature is lowered. It is used successfully for high-pressure vessels at temperatures below -320 F. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and bend strength as well as fracture toughness. It also includes information on low temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-75. Producer or source: RMI Company.