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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.

AISI 4142 is a medium-carbon low-alloy steel recommended for moderately heavy-duty service. It is nominally an oil-hardening grade; however, it may be water hardened if suitable precautions are taken to avoid cracking. It has a relatively low tendency to develop temper embrittlement. It has a variety of applications including bolts, crankshafts, wrenches, clutch parts and shafting.