Copper Alloy No. C813000 is a cast copper-base alloy containing nominally 0.8% cobalt and 0.06% beryllium. Thus it is a beryllium-modified copper-cobalt alloy. Because of its beryllium content, its manufacture may present a health hazard. C81300 is a precipitation-hardenable alloy with moderate hardness and strength. It has fairly good thermal and electrical conductivities. It is used for electrical and thermal conductors where moderate hardness is sufficient but is required. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on casting, heat treating, machining, and joining. Filing Code: Cu-508. Producer or source: Copper alloy foundries.