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.Finkl WF-XTRA has high wear resistance while retaining moderate fracture toughness. The alloy is recommended for larger die blocks. The optimum diameter for hardenability is 838 mm (33 in.). It is appropriate for use in high-production hammers where die temperatures may be above average or in presses with moderately high operating temperatures.