LEADED NICKEL BRONZE 65-20 is a cast copper-nickel zinc-tin alloy to which lead has been added to improve machinability. It is sometimes known as DAIRY BRONZE and has many marine, industrial and ornamental uses. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness and fatigue. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, and machining. Filing Code: Cu-275. Producer or source: Copper alloy foundries.