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.OSTALLOY 158 is a bismuth-base, eutectic alloy that melts at 158 F (70 C). It provides engineers and technicians with an easily castable material that is ready for use as soon as it freezes. It can be recovered easily and recycled into new uses any number of times. Its many uses include holding jet engine blades for machining and broaching, support for bending tubing and extrusions and seals for annealing and nitriding furnaces.