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.Sirius S15 is a high-temperature stainless steel with the elements silicon, cerium, and lanthanum added for an oxidation resistance that is better than AISI Type 310. Applications are in burners, recuperators, and ducts.