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.TLS Vertex is a versatile air-hardening tool steel that is high in chromium and therefore rich in chromium carbides for abrasive wear resistance. TLS is a trademark of Timken Latrobe Steel.