Weight per metre1.26kg/m
6 m bar7.5kg
12 m bar15.1kg
Metres per tonne796.2m
Painting surface0.088m²/m
- Width × thickness
- 40 × 4 mm
- Section area
- 1.60 cm²
- Outer surface
- 0.088 m²/m
- Outer surface
- 0.088 m²/m
Weight by length
| Length | Steel | Stainless 304 | Aluminium |
|---|---|---|---|
| 1 m | 1.26 kg | 1.27 kg | 0.43 kg |
| 2 m | 2.51 kg | 2.54 kg | 0.86 kg |
| 3 m | 3.77 kg | 3.81 kg | 1.30 kg |
| 4 m | 5.02 kg | 5.08 kg | 1.73 kg |
| 5 m | 6.28 kg | 6.34 kg | 2.16 kg |
| 6 m | 7.54 kg | 7.61 kg | 2.59 kg |
| 8 m | 10.05 kg | 10.15 kg | 3.46 kg |
| 10 m | 12.56 kg | 12.69 kg | 4.32 kg |
| 12 m | 15.07 kg | 15.23 kg | 5.18 kg |
How it was calculated
The weight is the section area multiplied by the material density:
kg/m = width × thickness × 0.00785, in mm.For Flat bar 40×4, the section area is 1.60 cm², so 1 metre = 1.60 × 0.785 = 1.256 kg.
The real weight can differ by a few percent because of rolling tolerances. For other materials or lengths use the calculator.
Other flat bar sizes
Flat bar 40×3Flat bar 40×4Flat bar 40×5Flat bar 40×6Flat bar 40×8Flat bar 40×10Flat bar 40×12Flat bar 40×15Flat bar 12×4Flat bar 15×4Flat bar 16×4Flat bar 20×4Flat bar 25×4Flat bar 30×4Flat bar 35×4Flat bar 45×4Flat bar 50×4Flat bar 60×4Flat bar 70×4Flat bar 80×4Flat bar 90×4Flat bar 100×4Flat bar 120×4Flat bar 150×4Full table →
Working out a whole order?
Add Flat bar 40×4 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 Flat bar 40×4 weigh?
One metre of steel Flat bar 40×4 weighs 1.26 kg.
How much does a 6 m bar of Flat bar 40×4 weigh?
A 6 m bar weighs 7.5 kg and a 12 m bar 15.1 kg.
How many metres of Flat bar 40×4 are in one tonne?
One tonne contains about 796.2 metres.