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Aluminium 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 aluminium 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 aluminium is also generally on the order of half that of ordinary steel. Both of these facts mean that the aluminium extrusion process has a relatively low energy footprint translating into low tooling and manufacturing costs.