Aluminum Extrusions – A technique used to transform aluminium alloy into objects with a definitive cross-sectional profile for a wide range of uses.  The extrusion process makes the most of aluminium’s unique combination of physical characteristics.  Its malleability allows it to be easily machined and cast, and yet aluminium is one-third the density and stiffness of steel so the resulting products offer strength and stability, particularly when alloyed with other metals.