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 ALLOYS 2562 AND 2581 are bismuth-base eutectic low-melting alloys; 2562 melts at 255 F and 2581 at 281 F. They provide engineers and technicians with easily castable material that is ready for use as soon as it freezes. The alloys can be recovered easily and recycled into new uses any number of times. Their uses include anchoring, electroforming cores, models, patterns and molds.