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.TECHALLOY 36 Alloy is an iron-nickel alloy that has a thermal expansion rate about 10% of the rate for carbon steel up to 400 F. It provides the lowest thermal expansion rate of all similar types of alloys. It has fairly good room-temperature mechanical properties in the annealed condition: a tensile strength of 71,000 psi and an elongation of 41%; also, it is tough at cryogenic temperatures. Among its many applications are electronic components, cryogenic parts and aircraft controls.