Aluminium rectangular tube 90 × 40 × 5.5 mm
It weighs 3.547 kg per metre: a 6 m length weighs 21.28 kg. Here you have the drawing, the dimensions and the weight for different numbers of lengths.
- Code
- 7250
- Type
- Rectangular tube
- Dimensions (mm)
- A90B40C5.5
- Weight per metre
- 3.547 kg/m
- 6 m length
- 21.28 kg
- Metres per kilo
- 0.28 m
- Equivalent cross-section
- 1,314.2 mm²
- How it is measured
- A and B are the outside sides; C is the wall thickness.
How much do the lengths weigh?
| 6 m lengths | 1 | 5 | 10 | 25 | 50 | 100 |
|---|---|---|---|---|---|---|
| Weight | 21.28 kg | 106.41 kg | 212.82 kg | 532.1 kg | 1,064.1 kg | 2,128.2 kg |
| Metres | 6 m | 30 m | 60 m | 150 m | 300 m | 600 m |
How much load does the 90 × 40 × 5.5 rectangular tube take?
Supported at both ends, with the load at midspan: how many kilos it takes before it bends more than 1/200 of the span (what windows and light structures usually accept) or goes past the elastic limit of 6063-T5 aluminium.
| Span | 0.5 m | 1 m | 1.5 m | 2 m |
|---|---|---|---|---|
| Upright (90 mm high) | 2,920 kg* | 1,460 kg* | 930 kg | 525 kg |
| Flat (40 mm high) | 1,695 kg* | 540 kg | 240 kg | 135 kg |
Moment of inertia 123.85 cm⁴ upright · 31.94 cm⁴ flat; section modulus 27.52 cm³ upright · 15.97 cm³ flat. * Here the strength of the material governs, not the deflection. A guidance calculation for a straight beam with sharp corners, E = 69 GPa, without its own weight or buckling of thin walls: for a structure, the check must be done by an engineer.
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Other sizes of rectangular tubes
Data from the Perfiles de Aluminio standard profile catalogue, 2026 edition, published with its permission. The weight per metre is the one declared by the manufacturer; the actual weight may vary within the tolerances of the standard. The equivalent cross-section is calculated with a density of 2.699 g/cm³. Standard length: 6 m.