Swissmetal SM117N (58T), SM118N (58A), SM121N (58F) alloys are free-machining brasses with increasing copper content for increasing cold formability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as heat treating and joining. Filing Code: CU-679. Producer or source: Swissmetal Metalworks Ltd, Plant Boillat.