THERMOLD H13 (formerly Thermold AV) is an air-hardening hot-work tool steel having good wear resistance and hot hardness at elevated temperature. Uniforged Rounds of THERMOLD H13 were developed especially for critically stressed extrusion tools and other hot-work tooling applications. 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, heat treating, machining, and joining. Filing Code: TS-241. Producer or source: Cyclops Corporation.