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.UNITEMP 188 provides outstanding oxidation and corrosion resistance, high strength at elevated temperatures, excellent creep and stress-rupture properties and thermal fatigue resistance.