Weight per metre3.77kg/m
6 m bar22.6kg
12 m bar45.2kg
Metres per tonne265.4m
Painting surface0.104m²/m
- Width × thickness
- 40 × 12 mm
- Section area
- 4.80 cm²
- Outer surface
- 0.104 m²/m
- Outer surface
- 0.104 m²/m
Weight by length
| Length | Steel | Stainless 304 | Aluminium |
|---|---|---|---|
| 1 m | 3.77 kg | 3.81 kg | 1.30 kg |
| 2 m | 7.54 kg | 7.61 kg | 2.59 kg |
| 3 m | 11.30 kg | 11.42 kg | 3.89 kg |
| 4 m | 15.07 kg | 15.23 kg | 5.18 kg |
| 5 m | 18.84 kg | 19.03 kg | 6.48 kg |
| 6 m | 22.61 kg | 22.84 kg | 7.78 kg |
| 8 m | 30.14 kg | 30.45 kg | 10.37 kg |
| 10 m | 37.68 kg | 38.06 kg | 12.96 kg |
| 12 m | 45.22 kg | 45.68 kg | 15.55 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 40×12, the section area is 4.80 cm², so 1 metre = 4.80 × 0.785 = 3.768 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 30×12Flat bar 35×12Flat bar 45×12Flat bar 50×12Flat bar 60×12Flat bar 70×12Flat bar 80×12Flat bar 90×12Flat bar 100×12Flat bar 120×12Flat bar 150×12Flat bar 200×12Full table →
Working out a whole order?
Add Flat bar 40×12 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 40×12 weigh?
One metre of steel Flat bar 40×12 weighs 3.77 kg.
How much does a 6 m bar of Flat bar 40×12 weigh?
A 6 m bar weighs 22.6 kg and a 12 m bar 45.2 kg.
How many metres of Flat bar 40×12 are in one tonne?
One tonne contains about 265.4 metres.