FAGERSTA K825 is a tough, shock resistant alloy steel having high tensile strength and endurance limit in the heat treated condition. It is recommended for shafts, bolts, countershafts, etc. in moderately stressed applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, machining, and joining. Filing Code: SA-214. Producer or source: Fagersta Steels Inc..