Koncor is an air hardening, non-deforming tool and die steel having good balance of wear resistance, strength, toughness and heat resistance. It is recommended for hot and cold working tools and dies. This datasheet provides information on composition and hardness 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-146. Producer or source: Latrobe Steel Company.