This document specifies the tolerances on dimensions and form for aluminium and aluminium alloy cold drawn square bars having widths across flats from 3 mm up to and including 100 mm.The temper designations used in this part are according to EN 515.
DS/EN 754-4:2008 history
2008DS/EN 754-4:2008 Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 4: Square bars, tolerances on dimensions and form