|
|
Aluminum Technical Data
Sheet and Plate
Flatness Tolerances
|
| Flatness Tolerances - Flat Sheet (1) |
|
|
Alloy
(includes
Alclads) |
|
Specified
Thickness
in. |
|
Longitudinal or Transverse Distance (ft)
Center to Center Buckles or Edge Waves (2) |
|
|
Up
Thru 2 |
|
Over 2
Thru 3 |
|
Over 3
Thru 4 |
|
Over 4
Thru 6 |
|
Over 6 |
|
| Tolerances, in. (3) (4) (5) |
|
1060, 1100, 1350, 3003, 3005,
3105, 5005, 5050, 5X57 |
0.020 thru 0.064
0.065 thru 0.249 |
1/8
1/8 |
|
3/16
3/16 |
|
3/16
5/16 |
|
5/16
3/8 |
|
3/8
1/2 |
|
3004, 5052, 5083, 5086, 5252,
5X54, 5456, 5652, brazing sheet,
and all heat treatable alloys |
0.020 thru 0.064
0.065 thru 0.249 |
3/16
3/16 |
3/16
5/16 |
5/16
3/8 |
3/8
1/2 |
1/2
9/16 |
|
| (1) Not applicable to cut-to-length sheet, panel flat sheet, coiled
sheet, or sheet over 60 in. wide. |
(3) Allowable deviation from flat with the sheet positioned on flat
horizontal surface to minimize deviation. |
| (2) Also applicable to overall length of width of sheet if only one
longitudinal and/or transverse buckle or edge wave is present. |
(4) Not applicable to O, F and FX8 and harder tempers.
(5) Not applicable to end or corner turn-up. |
| Flatness Tolerances - Sawed or Sheared Plate |
| Longitudinal Flatness |
|
|
Specified Thickness, in. |
|
Tolerance (1) in. - Allowable Deviation from Flat |
|
|
| TX51 Tempers (2) |
|
Other than TX51 tempers (2)(7) |
|
0.250 - 3.000
3.001 - 8.000 |
3/16 in any 6 ft (3)
1/8 in any 6 ft or less |
1/4 in any 6 ft or less
1/4 in any 6 ft or less |
|
| Transverse Flatness |
|
|
Specified Thickness, in. |
|
Tolerance (1) in. - Allowable Deviation from Flat |
|
|
| Widths over 4 ft thru 6 ft (4) |
|
Widths over 2 ft thru 4 ft |
|
Widths 2 ft and less |
|
| TX51 tempers (2) |
|
Other than,
TX51 tempers (2)(7) |
TX51 tempers (2) |
|
Other than,
TX51 tempers (2)(7) |
All tempers (7) |
|
0.250 - 0.624
0.625 - 1.500
1.501 - 3.000
3.001 - 8.000 |
3/8
5/16
3/16
1/8 |
1/2
3/8
1/4
1/4 |
5/16
3/16
3/16
1/8 |
3/8
1/4
3/16
3/16 |
Only short-span flatness
tolerance applies |
|
| Short-Span Flatness (5) |
|
|
Specified Thickness, in. |
|
Tolerance (6) in. - Allowable Deviation from Flat |
|
|
| TX51 Tempers (2) |
|
Other than TX51 tempers (2)(7) |
|
0.250 - 0.624
0.625 - 8.000 |
.100
.075 |
.125
.090 |
|
(1) As measured with plate resting on a flat surface concave side upward,
using a straightedge and a feeler gauge, dial gauge or scale.
(2) TX51 is a general designation for the following stress-relieved
tempers: T351, T451, T651, T851, T7351, and T7651.
(3) For pieces ordered to less then 6 ft length, the tolerance is 1/8
in. for the total length. |
(4) For widths over 6 ft, these tolerances alloy for any 6 ft of total
width.
(5) Short-span flatness is the deviation from flat over full span for
spans 2 ft and less
(6) As measured with the plate resting on a flat surface
(7) Not applicable to O, F, and HX8 and harder tempers.
|
|
