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.Kanthal APM HP is an advanced high-purity powder metallurgical dispersion-strengthened resistance heating or high-temperature alloy of the family FeCrAlMo that has good form stability at high temperatures.