Aluminum Channel
Aluminum channels are long, thin metal parts that are shaped like a U with no curves. They are 3-dimensional support structures composed of 3 straight metal bars-a horizontal web and 2 shorter vertical legs-that are roll formed. They find uses in a number of structural applications, including tracks, protective edges, holders, framing, trim, supports, reinforcements, rims, rails and girts. These aluminum parts are mainly used in the construction, engineering and architecture industries, and offer low tooling costs because of their simple shape. Channels made of aluminum are available in the standard dimensions of 6 inch base, 3.25 inch legs and a .21 inch thick wall, but can often me made to fit custom dimensions.
Roll forming, which is a continuous metal forming process where calendars or idle punches are used to shape sheet metal into channels, is done through hot or cold forming, depending on the complexity of the shape and the desired strength of the aluminum. 6061 Aluminum, which is known for its formability and corrosion resistance, is generally used to manufacture channel shapes. Channels can be C-shaped, hat or U-shaped, and are composed of a horizontal web, 2 shorter vertical legs and sometimes a ret, which are small end sections that curl around. Aluminum channels are often put through extra in-line fabrication, which produces notches, holes, slots, tabs or depressions in the channels. They may also be perforated or embossed or have different materials inserted inside.