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.MAERKER G-4848 is a heat resistant alloy for the petro chemical industry. The alloy has very good creep-rupture strength with low embrittlement. Similar to HK Mod.