SeBiLOY I (UNS C89510) is a selenium/bismuth-modified cast red brass alloy. Its low lead content helps meet the National Sanitation Foundation’s standard on low lead pickup in water supply systems. The Se/Bi modification permits machining similar to some of the red brasses it is replacing. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on casting, machining, and joining. Filing Code: CU-605. Producer or source: Copper and copper alloy mills.