Federalloy I (C89837) is a lead-free brass casting alloy that is machinable by alloying additions of bismuth. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness. It also includes information on corrosion resistance as well as casting, machining, and joining. Filing Code: CU-614. Producer or source: Federal Metal Company.