BERYLDUR is a low-cost, easy to work beryllium-copper alloy having age-hardening characteristics, high tensile properties and excellent corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-74. Producer or source: Beryllium Corporation.