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.NI-ROD 55 Welding Electrode is used for shielded-metal-arc welding of gray, ductile, malleable, and Ni-Resist? cast irons. It is also used for welding cast irons to various wrought materials, including carbon steels, low-alloy steels, and nickel alloys. The electrode is especially useful for welding heavy sections and high-phosphorus irons. NI-ROD 55 Welding Electrode can be operated in all welding positions. Power supply: direct current, electrode positive is preferred although alternating current can be used.