The unified numbering system uns for metals and alloys is widely used in. New edition of uns book for metals and alloys available. The system assigns numbers to alloys on the basis of composition only. The publication is conumbered sae hsj1086 and astm ds56. Unified numbering system for metals and alloys what it is, why it was conceived, and how it was developed. Theunified numbering system for metals and alloys uns provides a means of correlating many internationally used metal and alloy numbering systems administered by societies, trade associations, and individual users and producers of metals and alloys. Each uns number consists of a single letter prefix followed by five digits. Section 3 outlines the organization established for administering. Metals and alloys in the unified numbering system 11th edition. Astm e527 16 standard practice for numbering metals.
Search for glossary terms regular expression allowed term definition. That is, using the standard number or even a common trade designation, you can then track the kind of material that it uses. An advisory board was set up by astm and sae in april 1972 to further work on the numbering system. These are iron base alloys containing more than 11% chromium. The unified numbering system for metals and alloys uns provides a means of correlating many internationally used metal and alloy numbering systems administered by societies, trade associations, and individual users and producers of metals and alloys.
These data are presented to facilitate general compari. Based on chemical composition, it arranges alloys into groups by major alloying elements. Unified numbering system an overview sciencedirect topics. Formatting citations in sae technical papers saes publications team is committed to listening to and acting upon the concerns of our contributors. Introduction to the unified numbering system index to. The unified numbering system uns was developed by astm and sae to correlate different numbering systems for commercial metals and alloys. Description of numbers established for metals and alloys the unified numbering system uns establishes 18 series of numbers for metals and alloys, as shown in table 1. The unified numbering system uns is an alloy designation system widely accepted in north america. The uns for metals and alloys provides a means of correlating many internationally used metal and alloy numbering systems administered by societies, trade associations, and individual users and producers of metals and alloys. The unified numbering system uns is an alloy identification system created in the early 1970s and formalized with the issuance of joint standard astm e527 and sae j1086 in august of 1974. The term unified numbering system uns was coined by the board. Each uns number relates to a specific metal or alloy and.
Metals and alloys in the unified numbering system is a musthave for any company that works with metals and a common shop reference tool in many machine shops. Standard practice for numbering metals and alloys in the. Each uns number relates to a specific metal or alloy and defines its specific chemical composition, or in some cases a specific mechanical or physical property. May 01, 2017 metals and alloys in the unified numbering system uns has been updated. Not only that, but metals and alloys in the unified numbering system uns also contains sections that allow the user to work in reverse.
The unified numbering system provides a quick and easy way to crossreference the many different numbering systems used to identify the thousands of metals and alloys in commercial use. This sae recommended practice describes a unified numbering system uns for metals and alloys which have a commercial standing and covers the procedure by which such numbers are assigned. Theunified numbering system for metals and alloys uns provides a means of correlating many internationally used metal and alloy. Various grades also contain nickel, molybdenum, manganese, nitrogen and other alloying elements. Numbering system for metals and alloys, a joint astmsae publication, pcn 0505600101. The unified numbering system uns is an alloy designation system widely accepted in north. These standard metals are selected on the basis of serving the significant metallurgical and engineering needs of fabricators and users of metal products. This book provides a means of correlating many internationally used metal and alloy numbering systems currently administered by societies, trade associations, and those individual users and producers of metals and alloys. There is no definition of mechanical or other properties. The unified numbering system for metals and alloys uns provides means of correlating many internationally used metal and alloy numbering systems currently administered by societies, trade associations, and those individual users and producers of metals and alloys. Standard practice for numbering metals and alloys uns. The resultant report, which stated that a unified numbering system for metals and alloys was definitely possible and beneficial, was submitted to the u. Over the past few years, weve received feedback from technical paper authors who have expressed a need and desire of being cited in recognized impactful journals this has. With a description of the system and a cross index of chemically similar specifications and a great selection of related books, art and collectibles available now at.
Introduction to the unified numbering system index to uns designations by base elements listing of uns numbers assigned to date. Introduction to the unified numbering system of ferrous. Astmds56 pdf metals and alloys in the unified numbering system. For example, brasses are copper alloys with zinc as the principal addition. Organization of uns the uns, jointly sponsored by the american society for testing and materials astm and the society of automotive engineers sae, is operated in accordance with astm e527sae j 1086, recommended practice for numbering. Each uns designation consists of a singleletter prefix followed by five digits.
The unified numbering system uns was developed by astm and sae to correlate different numbering systems for commercial metals and alloys the uns number is not a specification it is an identification number for a metal or alloy specified elsewhere. This new edition provides an overall designation system for thousands of metals and alloys in commercial use. The unified numbering system for metals and alloys provides methods of correlating many internationally used metal and alloy numbering systems currently. Astm ds56 metals and alloys in the unified numbering.
This designation system establishes 9 series of designations for nonferrous metals and alloys. Metals and alloys in the unified numbering system uns. In most cases the letter is suggestive of the family of metals identified. To sort through the range of alloys that were available and organize them into families, the astm in conjunction with the sae devised a unified numbering system, or uns. Unified numbering system uns for metals and alloys. Astm ds56 metals and alloys in the unified numbering system. Introduction to the unified numbering system of nonferrous metals.
The uns for metals and alloys provides a means of correlating many internationally used metal and alloy numbering systems administered by societies, trade. New 12th edition released for sae hs 1086, astm ds 56. Aug 29, 20 metals and alloys in the unified numbering system is a musthave for any company that works with metals and a common shop reference tool in many machine shops. Introduction to the unified numbering system of nonferrous. By using the uns, you can be sure you are speaking the same language as your customers and suppliers. Metals and alloys in the unified numbering system uns axxxxx aluminum and aluminum alloys updated cxxxxx copper and copper alloys updated dxxxxx specified mechanical properties steels not updated exxxxx rare earth and similar metals and alloys not updated fxxxxx cast irons not updated. Uns is a system of designations established in accordance with astm e 527 and sae j1086, recommended practice for numbering metals and alloys. Mar 18, 2018 description of numbers established for metals and alloys the unified numbering system uns establishes 18 series of numbers for metals and alloys, as shown in table 1. Unified numbering system for metals and alloyswhat it is, why it was conceived, and how it was developed. It is a unified identification of metals and alloys for which controlling limits have been established in specifications published elsewhere. Our sales staff is ready to help you buy the metals you need. The unified numbering system uns for metals and alloys is established to correlate several internationally used alloy and metal numbering systems, which are now commonly used by trade associations, societies and producers and users of alloys and metals. The 12th edition has been updated to include more than 5,600 designations, 4,100 representative specification cross references, and 15,350 trade names. Astm e52716 standard practice for numbering metals and.
Join more than 90,000 members around the world who know they can rely on sae for. The uns has become a shorthand descriptor that allows users and suppliers to understand material callouts across industries and applications while preservperformance. 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. Unified numbering system uns for metals and alloys azom. Each uns designation consists of a singleletter prefix followed by.
Introduction to the unified numbering system index to uns designations by base elements listing of uns numbers assigned to date with description of each material covered and references to documents in which the same or similar materials are described cross index of commonly known documents. This numbering system is not limited to the oil and gas industry. The sources that have been most helpful are the metal and alloy producers, alloy digest, woldmans engineering alloys, international nickels publications and unified numbering system for metals and alloys. Unified numbering system for ferrous metals and alloys. Other common designations like those developed by the alloy asting institute classify materials based on their application and chemistry. The unified numbering system for metals and alloys provides methods of correlating many internationally used metal and alloy numbering systems currently published by engineering bodies, societies, trade associations, and producers of metals and alloys. Metals and alloys in the unified numbering system 2017. Standard practice for numbering metals and alloys in the unified numbering system uns 1. This practice note 1 covers a unified numbering system uns for metals and alloys that have a commercial standing see note 2, and covers the procedure by which such numbers are assigned. Section 2 describes the system of alphanumeric designations or numbers established for each family of metals and alloys. The new 2017 th edition is scheduled for release in midmay. This system avoids the confusion caused by the use of more than one. Astme527 standard practice for numbering metals and alloys.
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