scope:

This part specifies the tolerances on dimensions and form of extruded precision profiles, in alloys EN AW-6060 and EN AW-6063 manufactured with and without a thermal barrier. This applies to as extruded products supplied without further surface treatment. Precision profiles covered in this standard are distinguished from extruded profiles for general applications covered in EN 755-9 by the following characteristics: - they are mainly for architectural applications; - they meet more stringent requirements regarding the surface condition of visible surfaces; - the maximum diameter of the circumscribing circle CD is 300 mm; - they are made to closer tolerances on dimensions and form. In the case of profiles which, due to the complexity of their design are difficult to manufacture and specify;special agreements between purchaser and manufacturer need to be reached.