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.Wieland-LV7 is a Cu-Ni-Mn alloy that after hardening, easily reaches the strength of high-strength steel and beryllium-copper. LV7 combines high strength, nonmagnetizability, and corrosion resistance. Spring properties are excellent. Color resembles stainless steel.