Ullrich Logo
Ullrich Extruded Products Catalogue
Aluminium extrusions... virtually any shape desired by the customer can be produced

Extrusion Tolerances / Mechanical Property Limits

Applicable manufacturing tolerances are those set out by the Aluminium Development Council of Australia Ltd (ADCA) in Aluminium Standards, Data and Design: Wrought Products (First Edition 1994).

Invariably, tolerances for an individual geo-metric shape are subject to negotiation and agreement between extruder and customer. Under this provision, the function of the shape in its specific application is given priority consideration. All manufacturing tolerances are subject to review from time to time.

Dimension tolerences(rounded down1)
Cross-sectional metal dimension2 ADCA Tolerance

 

mm mm  
Up to 3
3 to 6
6 to 12
12 to 20
20.to 25
25 to 40
40 to50
50 to 100
100 to 150
150 to 200
200 to 250
0.15
0.18
0.20
0.23
0.25
0.31
0.36
0.61
0.86
1.12
1.37

1. Dimensional tolerances are rounded down to the nearest 0.05mm, because all callipers used to measure metal dimensions are almost universally graduated at intervals at 0.05mm.

2. Metal dimensions refer to solid metal dimensions or any measurement unbroken by a gap or void. For tolerances across gaps or voids refer to the ADCA standards.


Alloy - Temper Thickness(mm)   Ultimate Yield Tensile Strength (MPa)
  Over Up to     Elongation2 3(% min. in 50 mm or 5.65 Sq Root-A)
1350 - H112   All 60   2323
6060 - T5   12.0 150 110 8
  12.0 25.0 145 105 6
6106 - T4   150.0 130 70 12
6106 - T6   10.0 235 210 8
  10.0 25.0 205 170 8
  25.0 150.0 185 160 10
6261 T6   All 295 255 7
6080 T6   20.0 295 255 7
  20.0 150.0 310 270 7
           

Footnotes

1 The thickness of the cross-section or wall thickness from which the tension specimen is taken determines the applicable mechanical properties.

2 For material of such dimensions that a standard test specimen cannot be taken, or for material thinner than 1.6mm the test for elongation is not required.

3 A = specimen cross-sectional area.

4. These yield strengths are not determined nor guaranteed unless specifically requested.

Source: Aluminium Standards, Data and Design: Wrought Products (ADCA first Edition 1994)

Useful formulae

Nominal mass (kg/m2) of Extruded Aluminium: calculate cross-section area (mm2) and multiply by 0.00271

Factor ( Difficulty of Extrusion factor) - calculate the perimeter of the section ( for hollow sections, both outside and inside perimeters) and divide the result by the nominal mass (kg/m) of the section.

Weight of Billet: Billet, 178mm diameter 1mm = 0.0666 Kg. Billet, 202mm diameter 1mm = 0.0875Kg

 
New Zealand / International Sales
Visit www.ullrich.co.nz
Phone: 0800 500 338 (Within NZ)
Email: general enquiry form
Orders: order form
Ullrich Aluminium Australian Aluminium Council Ltd
Australia
Visit www.ullrich.com.au
Phone: 1300 650 075 (Within AU)
Email: general enquiry form
Orders: order form
 

Aluminium Castings - Aluminium Extrusions - Aluminium Finishes - Aluminium Ladders, Commercial - Building Products Division - Cladding, Wintec UlltraClad® - Decorative Metals - Download Brochures - Extruded Aluminium Bends - Fabricated Aluminium - Fasteners - Machinery, Tekna - Marine Products - Sheet, Plate & Rollformed Aluminium - Welding Products - Wintec UlltraClad® Cladding -

Company Profile - Contact Details - Sales Centres - News - Specials - Interesting Links - Home - TOP