TLS H13 PQ is an H13 type tool steel of premium quality. It meets the standards needed in the die casting industry by means of special melting techniques, thermomechanical processing, and care in annealing treatments. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on heat treating and machining. Filing Code: TS-588. Producer or source: Timken Latrobe Steel.