BRUSH WELLMAN ALLOY D7 is a beryllium-containing aluminum casting alloy developed primarily as a plastic tooling material. Its main advantages are: (1) Excellent replication of detail, (2) High hardness and (3) Aging at room temperature. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Al-217. Producer or source: Brush Wellman Inc..