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.INCOLOY alloy 907 is a high-strength alloy having a low coefficient of thermal expansion. It is a precipitation hardening alloy. INCOLOY alloy 907 is useful for gas-turbine components where it provides for closer control of clearances and tolerances.