... 1.0, 1 .2, 1.5, 2. 0, 2. 5, 3. 0, 4.0, 5.0 and 6.0 mm.Most sheet is produced in non-heat-treatable material (1xxx, 3xxx,5xxx), and is supplied in a stated temper (such as ‘quarter-hard’, ‘half-hard’) ... applications, sheet is supplied in heat-treatablealloy (2xxx, 6xxx or 7xxx series), usually in the fully-heat-treated T 6- condition (quenched and artificially aged). 2. 2.4 Tolerance on thicknessThe ... defined by: (2. 3a) (2. 3b) where c, d are as defined in the figure and A is the area of region X.Under the most favourable conditions, i.e. for a section in 60 63 alloy (orFigure 2. 2 Typical...