MUELLER ALLOY No. 3600 (formerly MBCo Alloy 201) is a copper-zinc alloy containing lead to give it excellent free-cutting characteristics. It has desirable mechanical properties and good resistance to corrosion. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-268. Producer or source: Mueller Brass Company.