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Aluminum extruded shapes are produced through aluminum extrusion, a process through which aluminum logs or billets are fed through the metal die of an extrusion press to produce specific shapes. Commonly produced shapes include angles, tubings, and channels. These aluminum extruded shapes can be found in computer parts, domestic appliances, automotive parts, and tubing. They can range in size from one-millimeter to parts that are several meters long. Aluminum extruded shapes can be customized to very close tolerances for numerous types of applications.

The metal die of an extrusion press functions as a mold used to produce the precise shape that is desired. There are two processes used to produce aluminum extruded shapes through an extrusion press. Direct extrusion refers to the process whereby a ram forces the aluminum log through the metal die. The metal die remains immobile during this process. The second process is indirect extrusion, whereby both the ram and the die place force on the aluminum to force the alloy to take a precise shape. The metal extrusion dies used to produce aluminum extruded shapes are designed to produce any number of shapes. The metal dies are either hollow or solid, and may contain openings that serve to soften the alloy.

Even though it is much lighter than other metals, aluminum is favored in producing extruded shapes. The process of aluminum extrusion results in very durable parts. But aluminum is particularly prized for its ability to resist corrosion, which is due to its natural oxide film. Aluminum is also very flexible. It can be easily bent or formed to specifications, and it can be joined through the use of soldering, welding, or brazing. Also, aluminum’s properties make it a good heat conductor and reflector, which is essential for products that provide heat transfer or heat shielding.