Aluminum Extrusion Cover
10 ft section
For use in our Air Conveyor Systems
Aluminum has numerous design advantages, both in terms of physical and chemical characteristics. Aluminum Is Recyclable Aluminum is fully, and repeatably, recyclable. Aluminum can be recycled over and over without any degradation or loss of its innate characteristics. This well known and documented feature maximizes efficiency. For many products, where product life has a limitation (such as applications in the transportation and consumer durables markets), aluminum’s recyclability—along with its other attributes—can make it a superior material choice compared with other materials. Aluminum has significant scrap value, making it not only environmentally friendly because of recyclability, but cost effective as well. Recycled aluminum takes only five percent of the energy necessary to produce virgin aluminum. Aluminum need not be a part of landfills.
Appropriately alloyed, aluminum’s ultimate tensiles can reach as high as 90,000 PSI, approaching those of steel. As a result, there are many structural applications of aluminum. Where formability is more important than strength, aluminum can be alloyed for much lower ultimate tensile. Low, medium or high strength, aluminum offers design flexibility.
As an efficient and cost-effective conductor, aluminum is an ideal material for electrical system components and bulk power transmission. Volume for volume, aluminum is about 62 percent as efficient an electrical conductor as copper; on an equal-weight basis, aluminum exceeds copper as a conductor.
Every process has its deviation from nominal. For castings, for example, it’s shrinkage and draft. For the aluminum extrusion process, tolerances are more an evolution than they are fixed. Improvements in die construction and press practices may provide for even tighter tolerances than standard on aluminum profiles. For many applications, standard aluminum extrusion tolerances have proven to be more precise than those for most competing processes. See section 8, page 1 for information on standard dimensional tolerances.
Typical Tolerances for Competing Materials Roll Forming (includes Aluminum, Brass, Bronze, Copper, and Steel [carbon, stainless, galvanized] in thickness from .005” to .375”) Decimal Dimensions +/- .010 Angular Dimensions +/- 1 degree Max. Bow (up, down, side) .015 per ft. X length Max. Twist 1/2 degree per ft. X length Length Tolerances 12.0” to 36.0” +/- .062 >36.0” to 144.0” +/- .094 >144” +/- .125 Stamping (includes Aluminum, Brass, Bronze/Copper, and Steel Alloys) +/- .002 on centers +/- .001 on hole diameters .005 radius on bends + .002 on hole distortion + .002 between hole centers .001 radius on outside corners Flatness .005” /in TIR Casting (includes Aluminum, Bronze, Iron, and Steel) Linear tolerances +/- .010 for first inch and +/- .0015 for each additional inch up to 12” Walls .020 - .025 on small castings .040 - .050 min. on larger castings Powdered Metal (Includes Aluminum, Bronze, Copper, Iron, Steel [carbon, stainless], and Titanium) Typical Dimensions +/- .003 Critical Dimensions +/- .001
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