Abstract CARPENTER No. 610 is a high-carbon, high-chromium tool steel with extremely high wear-resisting properties. It has very high hardenability (air hardening) and will be practically free from size changes after proper treatment. Its high percentage of chromium gives it mild corrosion resistance in the hardened condition. Typical applications include various types of dies, slitting cutters, heading tools and intricate punches. This datasheet provides information on composition, physical properties, and hardness as well as deformation. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-358. Producer or source: Carpenter.