Aluminum Alloy Standard Designations

The most widely used standard designation for aluminum alloys is that introduced by the Aluminum Association (AA), Arlington, VA, and now extensively used in several countries. According to these standard designations, aluminum-based alloys are divided into two main categories wrought alloys (i.e., mechanically worked) and cast alloys. 

First digit principal alloying element, second digit variations of initial alloy, third and fourth digits individual alloy variations. 

Cast aluminum alloys have a designation similar to that of the wrought materials. They are normally identified as 2xx.O, 3xx.0,4xx.0, 5xx.O, etc. 

Source The Aluminum Association, Arlington, VA. Source The Aluminum Association, Arlington, VA. 

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Table 3.6. Wrought aluminum alloy standard designation ...

Metals andMllojs Aluminum Association 900 19th Street, NW Washington, D.C. 20006 Standards for wrought and cast aluminum and aluminum alloy products, including composition, temper designation, dimensional tolerance, etc. 

Several researches have examined the effect of tool dimensions on friction stir weld quality. Reynolds and Tang (Ref 11) used several different variations of cylindrical pins with a concave shoulder to show that defect-free friction stir welds in 8.1 mm (0.32 in.) thick 2195 aluminum alloys could be produced with pin diameter to shoulder diameter ratios ranging from 2 to 1 to 3.125 to 1. Peel et al. (Ref 115) evaluated cylindrical pins with either a standard metric M5 thread (5 mm wide with 0.8 mm pitch) or a wider pin (6 mm wide) with a coarser thread (1 mm pitch). At higher travel speeds (200 mm/min, or 8 in./min), the broader 6 mm tool with the coarser threads was more effective in disrupting the faying interface between the two joined workpieces. This change of pin design... 

TEST MATERIAL. Material from one lot of standard mill produced 3/8 in. thick 5083-HI 13 (ASTM aluminum alloy designation GM41 A) plate was used for this investigation. The chemical analysis of the material fell within the limits established for this alloy and is shown in Table I. 

Standard for the design and fabrication of welded aluminum-alloy storage tanks. 

In the United Kingdom, pressure vessels for use in the chemical and allied industries are designed and fabricated according to the British Standard PD 5500 or the European Standard EN 13445. The 2003 edition of PD 5500 covers vessels fabricated in carbon and alloy steels and aluminum. The design of vessels constructed from reinforced plastics is covered by BS 4994. 

AA/ANSI (1997) Standard Alloy and Temper Designation Systems for Aluminum. The Aluminum Association Arlington, VA, and The American National Standardization Institute, Washington, D.C. 

Screw conveyors have a variety of configurations. Each is designed for specific applications and/or materials. Standard conveyors have a galvanized-steel rotor, or helix, and trough. For abrasive and corrosive materials (e.g., wet ash), both the helix and trough may be hard-faced cast iron. For abrasives, the outer edge of the helix may be faced with a renewable strip of Stellite (a cobalt alloy produced by Haynes Stellite Co.) or other similarly hard material. Aluminum, bronze, Monel, or stainless steel also may be used to construct the rotor and trough. 

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