ASTM A968/A968M-96(2..
ASTM B223-08(2013)..
ASTM B23-00(2010)..
ASTM B478-85(2008)..
ASTM B753-07(2013)..
ASTM B77-07(2013)..
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ASTM E527-12
Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
STANDARD published on 15.10.2012
The information about the standard:
Designation standards: ASTM E527-12
Note: WITHDRAWN
Publication date standards: 15.10.2012
SKU: NS-47100
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: American technical standard
Category: Technical standards ASTM
The category - similar standards:
Annotation of standard text ASTM E527-12 :
Keywords:
aluminum alloy numbering system, aluminum alloy UNS numbering, cast iron numbering system, cast iron UNS numbering, copper alloy numbering system, copper alloy UNS numbering, ferrous alloys numbering system, ferrous alloys UNS numbering, nickel alloy numbering system, nickel alloy UNS numbering, reactive metals and alloys numbering system, reactive metals and alloys UNS numbering, refractory metals and alloys numbering system, refractory metals and alloys UNS numbering
Additional information
| Significance and Use |
|
4.1 The UNS provides a means of correlating many nationally used numbering systems currently administered by societies, trade associations, and individual users and producers of metals and alloys, thereby avoiding confusion caused by use of more than one identification number for the same material; and by the opposite situation of having the same number assigned to two or more entirely different materials. It also provides the uniformity necessary for efficient indexing, record keeping, data storage and retrieval, and cross referencing. 4.2 A UNS number is not in itself a specification, since it establishes no requirements for form, condition, quality, etc. It is a unified identification of metals and alloys for which controlling limits have been established in specifications published elsewhere. 1.1 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. Section 3 outlines
the organization established for administering the system. Section
5 describes the procedure
for requesting number assignment to metals and alloys for which UNS
numbers have not previously been assigned.
Note 1—UNS
designations are not to be used for metals and alloys that are not
registered under the system described herein, or for any metal or
alloy whose composition differs from those registered.
Note 2—The
terms “commercial standing,” “production usage,” and other similar
terms are intended to apply to metals and alloys in active
commercial production and use, although the actual amount of such
use will depend, among other things, upon the type of metals and
alloys involved and their application.
The various standardizing organizations involved with the individual industries apply their own established criteria to define the status of a metal or alloy in terms of when a UNS designation number will be assigned. For instance, ASTM Committee A01 requires details of heat analysis, mechanical properties, and processing requirements for addition of a new grade or alloy to its specifications. The Copper Development Association requires that the material be “in commercial use (without tonnage limits);” the Aluminum Association requires that the alloy be “offered for sale (not necessarily in commercial use);” the SAE Aerospace Materials Division calls for “repetitive procurement by at least two users.” Thus, while no universal definition for usage criteria is established, the UNS numbers are intended to identify metals and alloys that are generally in regular production and use. A UNS number will not ordinarily be issued for a material that has just been conceived or that is still in only experimental trial. |
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