http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Unified numbering system for metals and alloys
metals and alloys currently covered by UNS numbers, July, 1974 : a joint activity of the Society of Automotive Engineers, inc., SAE J1086, American Society for Testing and Materials, ASTM DS-56
American Society for Testing and Materials