Weight per metre3.57kg/m
6 m bar21.4kg
12 m bar42.8kg
Metres per tonne280.1m
Painting surface0.126m²/m
- Width × height
- 40 × 30 mm
- Wall thickness
- 4 mm
- Cold-formed, EN 10219
- 3.57 kg/m
- Hot-finished, EN 10210
- 3.76 kg/m
- Section area
- 4.55 cm²
- Outer surface
- 0.126 m²/m
- Outer surface
- 0.126 m²/m
Weight by length
| Length | Steel | Stainless 304 | Aluminium |
|---|---|---|---|
| 1 m | 3.57 kg | 3.61 kg | 1.23 kg |
| 2 m | 7.14 kg | 7.21 kg | 2.46 kg |
| 3 m | 10.71 kg | 10.82 kg | 3.68 kg |
| 4 m | 14.28 kg | 14.43 kg | 4.91 kg |
| 5 m | 17.85 kg | 18.03 kg | 6.14 kg |
| 6 m | 21.42 kg | 21.64 kg | 7.37 kg |
| 8 m | 28.56 kg | 28.85 kg | 9.82 kg |
| 10 m | 35.70 kg | 36.07 kg | 12.28 kg |
| 12 m | 42.84 kg | 43.28 kg | 14.74 kg |
How it was calculated
The weight is the section area multiplied by the material density:
kg/m = section area (mm²) × 0.00785, with the area calculated from width, height and thickness and the corners rounded per EN 10219 (cold-formed) or EN 10210 (hot-finished, outer radius 1.5t).For Rectangular tube 40×30×4, the section area is 4.55 cm², so 1 metre = 4.55 × 0.785 = 3.570 kg.
The real weight can differ by a few percent because of rolling tolerances. For other materials or lengths use the calculator.
Other rectangular tube sizes
Rectangular tube 40×30×1Rectangular tube 40×30×1.2Rectangular tube 40×30×1.5Rectangular tube 40×30×2Rectangular tube 40×30×2.5Rectangular tube 40×30×3Rectangular tube 40×30×4Rectangular tube 40×30×5Rectangular tube 50×25×4Rectangular tube 50×30×4Rectangular tube 60×30×4Rectangular tube 60×40×4Rectangular tube 70×30×4Rectangular tube 70×40×4Rectangular tube 70×50×4Rectangular tube 80×40×4Rectangular tube 80×60×4Rectangular tube 100×40×4Rectangular tube 100×50×4Rectangular tube 100×60×4Rectangular tube 100×80×4Rectangular tube 120×60×4Rectangular tube 120×80×4Rectangular tube 140×80×4Full table →
Working out a whole order?
Add Rectangular tube 40×30×4 to the materials list and see the total weight and cost of the order, together with the other products.
Frequently asked questions
How much does one metre of Rectangular tube 40×30×4 weigh?
One metre of steel Rectangular tube 40×30×4 weighs 3.57 kg.
How much does a 6 m bar of Rectangular tube 40×30×4 weigh?
A 6 m bar weighs 21.4 kg and a 12 m bar 42.8 kg.
How many metres of Rectangular tube 40×30×4 are in one tonne?
One tonne contains about 280.1 metres.