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.BELMONT ALLOY 2481 is a bismuth-base, non-eutectic alloy that melts through the temperature range 218-440 F. It was developed and used originally for making punch dies to produce transformer laminations from silicon steel sheet. It is now also used to make a wide variety of punch dies and plates, chuck jaws and other holding devices for machine shops and manufacturing operations.