BERYLCO PS-20 is beryllium sheet produced by rolling slabs of hot-pressed beryllium powder, PR-20 is the designation of the same composition rolled to plate. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Be-2. Producer or source: Kawecki Berylco Industries Inc..