SAE International Publishes New Edition of UNS Book for Metals and Alloys

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The Unified Numbering System (UNS) for Metals and Alloys provides a means of correlating internationally used metal and alloy numbering systems administered by societies, trade associations, and individual users and producers of metals and alloys.

Metals & Alloys in the Unified Numbering System, 12th edition

SAE International and ASTM International have just published the latest edition of the popular “Metals & Alloys in the Unified Number System."

SAE International and ASTM International have just published the latest edition of the popular “Metals & Alloys in the Unified Number System,” which provides the uniformity necessary for efficient indexing, record keeping, data storage and retrieval, and cross-referencing.

Updated to include more than 5,600 designations; 4,100 representative specification cross references; and 15,350 trade names, the 12th edition of “UNS” includes:

  •     Introduction to the Unified Numbering System
  •     Index to UNS Designations by Base Elements
  •     Listing of UNS Numbers assigned-to date, with a description of each material covered and references to documents in which the same or similar materials are described
  •     Cross-index of commonly known documents that describe materials that are the same as or similar to those covered by UNS numbers
  •     Index of Common Trade Designations
  •     Reprint of the J1086/ASTM E527 Standard "Recommended Practice for Numbering Metals and Alloys"

Cross-references include specifications from these organizations:

  •     AA (Aluminum Association) Numbers
  •     ACI (Steel Founders of America) Numbers
  •     AISI (American Iron and Steel Institute) including SAE Numbers (Carbon and Low Alloy Steels)
  •     AMS (SAE Aerospace Materials Specifications) Numbers
  •     ASME (American Society of Mechanical Engineers) Numbers
  •     ASTM (American Society for Testing & Materials) Numbers
  •     AWS (American Welding Society) Numbers
  •     QQ (Federal Specification Numbers)
  •     MILS (Military Specification Numbers)
  •     SAE International “AMS” and "J" Numbers

Book Details

  • Published: December 2012
  • Pages: 540
  • Binding: Hardbound
  • Product Code: HS-1086/2012
  • ISBN: 978-0-7680-7950-0
  • Price: $205.00 List, $164.00-$184.50 SAE Member

For more information, including free front and back matter, or to order “Metals & Alloys in the Unified Numbering System, 12th edition,” visit To request an electronic review copy of the book, email pr(at)sae(dot)org. Forward published reviews to Shawn Andreassi at pr(at)sae(dot)org or SAE International, 400 Commonwealth Dr., Warrendale PA, 15096-0001, to receive a print copy of the book or another equivalent SAE International book.

Other related books from SAE International include:

  • - Relational Analysis, Guidelines for Estimating the High- and Low-Temperature Properties of Metals by: J. Gilbert Kaufman
  • - Metallurgy for the Non-Metallurgist, 2nd Ed by: Arthur C. Reardon
  • - The History of Stainless Steel by: Harold M. Cobb

The “UNS” also is available as an online subscription product or as a set of online and print products at

SAE International is a global association of more than 133,000 engineers and related technical experts in the aerospace, automotive and commercial-vehicle industries. SAE International's core competencies are life-long learning and voluntary consensus standards development. SAE International's charitable arm is the SAE Foundation, which supports many programs, including A World In Motion® and the Collegiate Design Series.

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Shawn Andreassi
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