DOWMETAL FS and FS-1 are wrought magesium-base alloys that do not respond to age-hardening heat treatment for increased hardness and strength. They are general purpose extrusion alloys. DOWMETAL FS-1 is the controlled purity grade. Extrusions are supplied in both FS and FS-1. Sheet and plate are supplied in FS-1 only. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive, shear, and bearing strength. It also includes information on as well as forming, machining, and joining. Filing Code: Mg-7. Producer or source: The Dow Chemical Company.