COPPER No. 145 is a phosphorus-deoxidized tellurium-bearing copper having excellent electrical and thermal conductivities combined with machinability approaching that of free-cutting brass. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-243. Producer or source: Copper and copper alloy mills.