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.ALLEGHENY LUDLUM AL-6X is an austenitic chromium-nickel-molybdenum stainless steel specifically designed for outstanding resistance to pitting and crevice attack in chloride-containing solutions. It possesses good ductility, high impact values and good weldability. It is an ideal material for condenser tubing.