BETHLEHEM A HT is a tool steel for cold-work applications. It is characterized by high resistance to wear, low distortion in heat treatment and air hardening; in fact, it is superior to AISI Type A2 for wearability and shock resistance. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-272. Producer or source: Bethlehem Steel Corporation.