View Sample Alloy Digest Data Sheet (PDF)

Since 1952, Alloy Digest has been the leading reference for materials property data on metals and alloys used throughout the world. Featuring graphs, charts and tables, these sheets give facts and figures on composition or characterization, physical and mechanical properties, heat treatment, and machinability.

CARPENTER SEVEN STAR is a molybdenum-type high-speed steel containing tungsten. It bears some similarity to AISI Type M1; however, its increased carbon and vanadium percentages (over M1) provide improved cutting efficiency without materially lowering its toughness. Seven Star is an ESR (Electro Slag Remelted) high-speed steel. Its many uses include blanking dies, drills, lathe tools, punches and shearing blades.