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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.

FAGERSTA WKE-4 is a proprietary tungsten-molybdenum high-speed steel containing 9% cobalt. It is harder than most high-speed steels and, in addition, has good toughness. It is used mainly for tools requiring maximum abrasion resistance and toughness, such as milling cutters, twist drills and reamers.