Products
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Aluminum |
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| Copper (Cu) | 2xxx |
| Manganese (Mn) | 3xxx |
| Silicon (Si) | 4xxx |
| Magnesium (Mg) | 5xxx |
| Magnesium and Silicon (Mg and Si) | 6xxx |
| Zinc (Zn) | 7xxx |
| Other elements | 8xxx |
| Unused series | 9xxx |
UNIFIED NUMBERING SYSTEM (UNS)
The Society of Automotive/Aerospace Engineers (SAE) and the American Society for Testing of Materials (ASTM) have jointly developed a numbering system to identify metal and alloy systems of "commercial standing".
This numbering system (UNS) consists of a six digit number (code) to identify each alloy. For wrought aluminum alloys this code always begins with an A and appears as follows: Axxxxx (digit) 123456
The second digit indicates whether the alloy is bare or clad by indicating a 9 for bare and an 8 for clad. The following four digits (3-6) are the registered alloy designation. For example, A92024 would be the UNS identification for bare 2024 while the alclad alloy would be identified as A82024.
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Products > Aluminum
Technical Info Temper Designation System
The established temper designation system is used for all forms of wrought and cast aluminum and aluminum alloys except ingot. It is based on the sequence of basic treatments used to produce various tempers. The temper designation follows the alloy designation with the two separated by a hyphen. Basic designations consist of a letter while the subdivisions of those basic tempers are indicated by one or more digits following those letters. Both the "T" Temper and the "H" Temper have such subdivisions.
The system is designed to set down specific sequences of fabrication processes, but only those operations that are recognized as significantly influencing the characteristics of the product are involved. Should some other variation of the same sequence of basic operations be applied to the same alloy, resulting in different characteristics, then additional digits will be added to the numerical designation.
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Products > Aluminum
Data Sheets
The following specification data sheets are provided as PDF files. You must have Acrobat Reader to view and/or save these files. A free version of Acrobat Reader is available to download here.
Chemical Composition Limits of Wrought Aluminum Alloys
Typical Properties Wrought Aluminum
Overview of USA Federal Aluminum Specifications
Overview of USA Military Aluminum Specifications
Comparison International Aluminum Alloys Specification
American Society for Testing and Materials (ASTM) in Aluminum
Aerospace Material Specifications (AMS) in Aluminum
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