Jessop-Saville H.50 is an air or oil hardening hot work tool steel recommended for die casting dies, hot punches, shear blades and pressing tools. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: TS-189. Producer or source: Jessop-Saville Ltd, Brightside Works.