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.WALLEX No. 40 is a self-fluxing, cobalt-base hard-surfacing alloy with excellent resistance to a combination of corrosion and abrasion and relatively good impact properties. It has excellent red hardness and weldability. It is supplied only as atomized powder for application with Wall Colmonoy's SPRAYWELD* and FUSEWELD* processes.