Böhler (or Boehler) WKV is a high efficiency hot-work steel having high resistance to heat checking, high tempering stability, adequate hot strength, sufficient toughness at working temperatures and very good thermal conductivity. It approaches ASM IIID or SAE Type S1 or AISI S1 in composition and type alloy. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: TS-41. Producer or source: Böhler Uddeholm N.A..