Mueller Brass Alloy C34500 is a copper-zinc-lead (leaded brass) alloy that is suitable for applications requiring extensive machining before cold-forming operations such as swaging, flaring, severe knurling, or thread rolling. Melting temperature values corrected December 2020. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Cu-908a. Producer or source: Mueller Brass Company. original 05/20, revised 12/20.