Atlas 2011 is a wrought, heat-treatable, aluminum-copper alloy (2xxx series) that also contains small amounts of bismuth and lead. Both bismuth and lead promote high-speed machining by causing the chips to fracture during machining and breaking away from the cutting tool. Atlas 2011 is used in applications where good machinability and high strength are required. 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: Al-472. Producer or source: Atlas Steels.