ATI Allvac 30, 40, 55 and 70 are commercially pure, unalloyed titanium grades. The four grade numbers (30, 40, 55, 70) refer to the approximate minimum yield strengths for each grade. The different grades are characterized by differences in oxygen levels. These titanium grades may be produced by single melt electron beam (EB) processing, or in a multiple melting practice with a final vacuum arc remelting (VAR) processing step. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ti-163. Producer or source: ATI.