01Dimensions
| Dimension | Value |
|---|---|
| Outside | 40 × 40 mm |
| Wall | 2 mm |
| Inside | 36 × 36 mm |
02Section properties
| Property | Value |
|---|---|
| Cross-sectional area | 303.4 mm² |
| Weight (2.70 g/cm³) | 0.819 kg/m |
| Moment of inertia Ix | 7.31 cm⁴ |
| Moment of inertia Iy | 7.31 cm⁴ |
| Outside perimeter | 158 mm |
Nominal values calculated from the standard cross-section at 2.70 g/cm³; Ix and Iy about the centroidal axes. The drawing issued with your quotation confirms final values.
03Supply and processing
| Item | Standard |
|---|---|
| Alloy and temper | 6063-T5; other 6000-series alloys on request |
| Lengths | Mill lengths (typically 6 m) or cut to length |
| Finishes | Mill, anodized or powder coated |
| Tolerances | EN 755-9 or ANSI H35.2, as specified |
| Fabrication | Cutting, drilling, tapping, CNC machining |
| Documents | Material certificate; dimensional report on request |
04Questions
How do you calculate the weight of aluminum square tube?
Area = B² − (B − 2t)², in mm²; weight in kg/m = area × 0.0027. A 40 × 40 × 2 mm tube has an area of 304 mm² and weighs about 0.82 kg/m.
Which alloy is best for square tube?
6063-T5 for appearance and general use; 6061-T6 where the tube carries significant load.
