Advantages of Aluminum Extrusion

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Aluminum is a very commonly specified material for use in extrusions and shape profiles because it possesses mechanical characteristics that make it ideally suited for the shaping and forming metal from billet sections.  The high malleability of aluminum means that the metal can be readily shaped into a variety of sections without expending significant energy on the tooling or forming process, and the melting point of aluminum is also generally on the order of half that of ordinary steel. Both of these facts mean that the aluminum extrusion process has a relatively low energy footprint translating into low tooling and manufacturing costs. Finally, aluminum also possesses a high strength to weight ratio, making it an excellent choice for industrial applications.

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Surface Types:

As a byproduct of the extrusion process, there are sometimes small, barely visible lines present on the surfaces of the profiles. This is a result of the extrusion tooling, and additional surface treatments can be specified to remove these lines. There are a few of secondary surface processing operations that can be performed such as face milling after the main extrusion forming process in order to improve the surface finish of the profile section. These processing operations can be specified in order to improve the geometry of the surface to improve the part profile by reducing the overall surface roughness of the extruded profile. These treatments are typically specified in applications that require precise positioning of the parts or where mating surfaces must be controlled tightly. Surface treatments can also add additional corrosion resistance, improve the hardness of the profile, or even add electrical insulation to the extrusions.