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SAE J1086 2012 Edition, October 1, 2012
Numbering Metals and Alloys
Description / Abstract:
This SAE Recommended Practice describes a unified numbering
system (UNS) for metals and alloys which have a "commercial
standing" (see 6.1), and 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 4 describes the procedure for requesting number assignment to metals and alloys for which UNS numbers have not previously been assigned.
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, there by avoiding confusion caused by the 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 provides, also, the uniformity necessary for efficient indexing, record keeping, data storage and retrieval, and cross referencing.
A UNS number is not in itself a specification, since it establishes no requirements for form, condition, quality etc. It is unified identification of metals and alloys for which controlling limits have been established in specifications published elsewhere. (See 6.2.)
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 4 describes the procedure for requesting number assignment to metals and alloys for which UNS numbers have not previously been assigned.
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, there by avoiding confusion caused by the 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 provides, also, the uniformity necessary for efficient indexing, record keeping, data storage and retrieval, and cross referencing.
A UNS number is not in itself a specification, since it establishes no requirements for form, condition, quality etc. It is unified identification of metals and alloys for which controlling limits have been established in specifications published elsewhere. (See 6.2.)
SAE J1086 2012 Edition, October 1, 2012
Numbering Metals and Alloys