Magnadie is a modified H11 hot-work die steel that is refined by argon oxygen decarburization (AOD) and is air hardenable. Hot work applications include dummy blocks, mandrels, and extrusion dies for aluminum. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as forming and heat treating. Filing Code: TS-582. Producer or source: Latrobe Steel Company.