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.TECHALLOY Nickel 211 is a nickel-manganese alloy with good elevated-temperature resistance to corrosion by sulfur compounds. When annealed, it is slightly stronger and harder than Techalloy Nickel 200 and is good for structural parts subjected to degassing temperatures. Nickel 211 has low electron emission and is used for such applications as electron tubes and sparkplug electrodes.