A-H5 is an air-hardening, non-deforming tool and die steel. It is deep hardening, has high abrasion resistance, and has good toughness for severe service. 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, and machining. Filing Code: TS-196. Producer or source: Bethlehem Steel Corporation.