COPPER ALLOY C18090 is a solid solution strengthened strip alloy, 96% minimum copper. It has good electrical conductivity and tensile strength ranging from 60,000 psi, annealed to 100,000 psi, spring temper. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: Cu-558. Producer or source: Copper and copper alloy mills. See also Alloy Digest Cu-569, February 1992.