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.Nickel Filler Metal 61 is a nickel-base alloy that is used for welding Nickel 200 and Nickel 201 to themselves and to other alloys such as stainless steel, carbon steels, copper-nickel alloys, INCONEL* alloys, INCOLOY* alloys and MONEL* alloys. The weld metal has moderate strength and ductility and good resistance to corrosion, particularly in alkalies.