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 44HT is designed for joining iron castings to similar materials and to dissimilar materials such as carbon and stainless steels and nickel-base alloys. The product is similar to NI-ROD Filler Metal 44 (see Alloy Digest Fe-114), but is modified to significantly improve its performance at elevated temperatures. The alloy is Ni-Fe-Mn with an addition of chromium and niobium to improve its resistance to high-temperature corrosion.