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.MARKER G4848 is a cast austenitic stainless steel for use up to 1050 C (1922 F). Typical uses include petrochemical ethylene furnace tubes and steam metal reformers.