| Unspecified Dimension Tolerance to follow AA Standards | |||||||
| Dimension (mm) |
Solid | Hollow 5.01-15mm |
Hollow 15.01-30mm |
Hollow 30.01-60mm |
Hollow 60.01-100mm |
Hollow 100.01-150mm |
Hollow 150.01-200mm |
| 0.00-3.20 | ± 0.15 | ± 0.25 | ± 0.30 | – |
– | – | – |
| 3.21-6.30 | ± 0.18 | ± 0.30 | ± 0.36 | ± 0.41 | – | – | – |
| 6.31-12.50 | ± 0.20 | ± 0.36 | ± 0.41 | ± 0.46 | ± 0.50 | – | – |
| 12.51-20.00 | ± 0.23 | ± 0.41 | ± 0.46 | ± 0.50 | ± 0.56 | – | – |
| 20.01-25.00 | ± 0.25 | ± 0.46 | ± 0.50 | ± 0.56 | ± 0.64 | ± 0.76 | – |
| 25.01-40.00 | ± 0.30 | ± 0.54 | ± 0.58 | ± 0.66 | ± 0.76 | ± 0.88 | – |
| 40.01-50.00 | ± 0.36 | ± 0.60 | ± 0.66 | ± 0.78 | ± 0.92 | ± 1.05 | ± 1.25 |
| 50.01-100.00 | ± 0.60 | ± 0.86 | ± 0.96 | ± 1.20 | ± 1.45 | ± 1.70 | ± 2.05 |
| 100.01-150.00 | ± 0.86 | ± 1.10 | ± 1.25 | ± 1.65 | ± 2.00 | ± 2.40 | ± 2.80 |
| 150.01-200.00 | ± 1.10 | ± 1.35 | ± 1.55 | ± 2.10 | ± 2.50 | ± 3.05 | ± 3.55 |
| Minimum Thickness of Metal Forming the Surface | Width (mm) |  |
||
| (mm) | 0-150 | 150.01-200 | 200.01-250 | |
| 0.00-3.20 | 0.004 | 0.006 | 0.010 | |
| 3.21-4.00 | 0.004 | 0.006 | 0.008 | |
| 4.01-5.00 | 0.004 | 0.006 | 0.007 | |
| 5.01-6.30 | 0.004 | 0.006 | 0.006 | |
| 6.31-8.00 | 0.004 | 0.006 | 0.006 | |
| 8.01-12.50 | 0.004 | 0.004 | 0.006 | |
| 12.51-20.00 | 0.004 | 0.004 | 0.006 | |
| 20.01-25.00 | 0.004 | 0.004 | 0.006 | Surfaces Widths Up Thru 25mm Or Any 25mm Increment Of Wider Surfaces Maximum Allowable Deviation D = Tolerance Factor . 25 (Mm) |
| 25.01-40.00 | 0.004 | 0.004 | 0.004 | |
| 40.01-50.00 | 0.004 | 0.004 | 0.004 | Widths Over 25mm Maximum Allowable Deviation D = Tolerance Factor . W (Mm) |
| Above 50.01 | 0.004 | 0.004 | 0.004 | |
| Minimum Thickness of Metal Forming the Surface (mm) |
Width (mm) | |
||
| (mm) | 0-150 | 150.01-200 | 200.01-250 | |
| 0.00-3.20 | 0.006 | 0.008 | 0.012 | |
| 3.21-4.00 | 0.006 | 0.008 | 0.010 | |
| 4.01-5.00 | 0.005 | 0.007 | 0.010 | |
| 5.01-6.30 | 0.004 | 0.006 | 0.010 | |
| 6.31-8.00 | 0.004 | 0.006 | 0.008 | |
| 8.01-12.50 | 0.004 | 0.006 | 0.008 | Surfaces Widths Up Thru 25mm Or Any 25mm Increment Of Wider Surfaces Maximum Allowable Deviation D = Tolerance Factor . 25 (mm) |
| 12.51-20.00 | 0.004 | 0.004 | 0.006 | |
| 20.01-25.00 | 0.004 | 0.004 | 0.006 | Widths Over 25mm Maximum Allowable Deviation D = Tolerance Factor . W (mm) |
| 25.01-40.00 | 0.004 | 0.004 | 0.004 | |
| Product |
Specified Diameter (Rod), Specified Width (Bar) & Circumscribing Circle Diameter (Profiles)(mm) | Specified Thickness (Rectangles), Minimum Thickness (Profiles) (mm) | Tolerance (mm) |  |
| Rod and Square. Hexagonal and Octagonal Bar | All | All | 1 mm/m | |
| Rectangular Bar | 0.00 – 40.00 | 0.00 – 2.50 | 4 mm/m | |
| > 2.50 | 1 mm/m | |||
| > 40.00 | All | 1 mm/m | ||
| Profiles | 0.00 – 40.00 | 0.00 – 2.50 | 4 mm/m | Allowable deviation from straight, D(max), in total length or in any 300 mm or longer chord segment of total length |
| > 2.50 | 1 mm/m |
| Product |
Specified Width (Bar), Circumscribing Circle Diameter (Profiles) (mm) | Specified Thickness (Rectangles), Minimum Thickness (Profiles) (mm) | Tolerance (Degree) |  |
| Bar | 0.00 – 40.00 | All | 3 ͦ/m but not greater than 7 ͦ | |
| 40.01 – 80.00 | All | 1.5 ͦ/m but not greater than 5 ͦ | ||
| > 80.00 | All | 1 ͦ/m but not greater than 3 ͦ | ||
| Profiles | 0.00 – 40.00 | All | 3 ͦ/m but not greater than 7 ͦ | Allowable deviation from straight, y(max), in total length or in any 300 mm chord segment of the total length |
| 40.01 – 80.00 | All | 1.5 ͦ/m but not greater than 5 ͦ | ||
| > 80.00 | All | 1 ͦ/m but not greater than 3 ͦ |
Source : The Aluminum Association ( International Alloy Designations and Chemical Composition Limits for
Wrought Aluminium and Wrought Aluminium Alloys, Jan 2015)
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