La Belle-HT is a high toughness tool steel having remarkable resistance to impact and battering at high hardness levels. It is recommended for cold header punches, shear blades, rivet sets, and aluminum impact extrusion dies and punches. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-204. Producer or source: Crucible Steel Company of America.