OFHC copper is a high conductivity, oxygen free grade of copper furnished in two grades, namely, Regular Grade and Certified Grade. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Cu-144. Producer or source: American Metal Climax Inc..