Metal · Weight
Steel flat bar weight per metre
A 40 × 5 mm steel flat bar weighs 1.570 kg per metre (1.055 lb/ft): the area of its section, 200 mm², times the density, 7850 kg/m³ (carbon steel).
Steel flat bar weight chart
| Size, mm | kg/m | lb/ft | Area, mm² | 6 m bar, kg |
|---|---|---|---|---|
| 20 × 3 | 0.471 | 0.316 | 60 | 2.826 |
| 20 × 5 | 0.785 | 0.527 | 100 | 4.710 |
| 25 × 3 | 0.589 | 0.396 | 75 | 3.532 |
| 25 × 5 | 0.981 | 0.659 | 125 | 5.887 |
| 30 × 3 | 0.707 | 0.475 | 90 | 4.239 |
| 30 × 5 | 1.178 | 0.791 | 150 | 7.065 |
| 40 × 4 | 1.256 | 0.844 | 160 | 7.536 |
| 40 × 5 | 1.570 | 1.055 | 200 | 9.420 |
| 40 × 8 | 2.512 | 1.688 | 320 | 15.07 |
| 50 × 5 | 1.963 | 1.319 | 250 | 11.77 |
| 50 × 6 | 2.355 | 1.582 | 300 | 14.13 |
| 50 × 10 | 3.925 | 2.637 | 500 | 23.55 |
| 60 × 6 | 2.826 | 1.899 | 360 | 16.96 |
| 80 × 8 | 5.024 | 3.376 | 640 | 30.14 |
| 100 × 10 | 7.850 | 5.275 | 1000 | 47.10 |
Each size opens the calculator with it, for any length, quantity or material.
- Density 7850 kg/m³, the calculator's typical value for carbon steel; a figure from the supplier's data sheet beats it.
How it is worked out
Weight per metre = area of the section × density. For 40 × 5 mm the area is 200 mm², so 200 × 7850 ÷ 10⁶ = 1.570 kg/m. A piece is that times its length in metres.
Other weight charts
Steel round bar and TMT rebar weight per metre · Steel plate and sheet weight per square metre · Aluminium sheet and plate weight per square metre · Stainless steel sheet weight per square metre (304) · Aluminium round bar weight per metre · Steel square tube weight per metre · Steel round tube and pipe weight per metre · Steel flat bar weight per metre · Steel equal angle weight per metre
Questions people ask
- How much does 40 × 5 mm steel flat bar weigh per metre?
- 1.570 kg (1.055 lb per foot). A 6 m length weighs 9.420 kg.
- What is the weight of 25 × 5 mm steel flat bar?
- 0.981 kg per metre. A 6 m length, 5.887 kg.
- How do you calculate the weight of steel flat bar?
- Section area (mm²) × density (7850 kg/m³) ÷ 10⁶ = kg per metre.