SAE, ASTM Numbering System. (Metalcasting Supplies).The Unified Numbering System The Unified Numbering System (UNS) is an alloy designation system widely accepted in North America. It consists of a prefix letter and five digits. A prefix of S indicates steel alloys, C for copper, brass, or bronze alloys, T for tool steels, etc. was developed by the Society of Automotive Engineers SAE International (SAE) is a professional organization for mobility engineering professionals in aerospace, automotive and the commercial vehicle industries.
The Society is a standards development organization for the engineering of powered vehicles of all kinds, including (SAE) and the American Society for Testing and Materials (ASTM ASTM
American Society for Testing and Materials ) to create uniformity among metal and alloy identifications. The system provides an easy way to cross-reference the many different numbering systems used to identify metals and alloys in use. It also allows for efficient indexing, record keeping and data storage and retrieval.
The 9th edition includes more than 600 new and revised designations, an updated cross-reference section and an expanded index of common names. It is available as a hardcover book or as a CD-ROM CD-ROM: see compact disc.
in full compact disc read-only memory
Type of computer storage medium that is read optically (e.g., by a laser). .
Society of Automotive Engineers
Circle No. 006 on last page.