UHB-46 is a non-deforming, oil-hardening tool and die steel having excellent toughness and wear resistance. It conforms to ASM Class IIA-1, SAE Type 01 and AISI Type 01. This datasheet provides information on composition and hardness. It also includes information on forming, heat treating, and machining. Filing Code: TS-38. Producer or source: Uddeholm Company of America Inc..