This Square Bar is available as 6082 T6 grade, the highest strength of all our aluminium square bars and known in the metal industry as a 'structural alloy' The material is good for machining and welding, and uses are usually outdoors, taking advantage of the excellent corrosion resistance properties.6082 T6 is suited to many rigid and structural fabrications, including:Balustrades, posts & railingsRoad signsTrucks & trailersFrame building