Marvac 250 is a clean high-strength maraging steel capable of 1654 MPa (240 ksi) yield strength. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: Fe-163. Producer or source: Latrobe Specialty Steel Company.