A7W is a high-carbon cold-work tool and die steel with high hardenability. It can be heat treated to very high hardness to provide excellent resistance to abrasion and wear. Its applications include liners for sand and shot blasting machines, extrusion dies for ceramics, punches and knives. This datasheet provides information on composition and hardness. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: TS-349. Producer or source: Guterl Special Steel Corporation.