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Standard weight and today's amount for your order
Total for 1 length · standard weight
—kg
The result appears hereEnter Width, Height and Wall thickness.
Method
A common size is read from the market box-section table. Any other size uses the exact hollow-section area: 2 × wall × (width + height − 2 × wall) × 0.00785, with each corner counted once.
The density of steel is 7.85 g/cm³ (7850 kg/m³) throughout. A number is rounded once, when shown; the table below and the calculator above are the same computation.
The "standard weight" is the nominal weight by table or formula. The "mill weight" is what that mill states for its own length; once you pick a mill, the calculation and the amount use it.
Reference table
Common sizes, by the same computation as the calculator.
| Section (mm) | kg per metre | kg per 6 m length | Basis |
|---|---|---|---|
| 20×20×2 | 1.18 | 7.08 | Table |
| 20×20×3 | 1.601 | 9.61 | Formula |
| 25×25×2 | 1.53 | 9.18 | Table |
| 25×25×3 | 2.072 | 12.43 | Formula |
| 30×30×2 | 1.78 | 10.68 | Table |
| 30×30×3 | 2.73 | 16.38 | Table |
| 40×40×2 | 2.45 | 14.7 | Table |
| 40×40×3 | 3.6 | 21.6 | Table |
| 50×50×2 | 3.11 | 18.66 | Table |
| 50×50×3 | 4.62 | 27.72 | Table |
| 60×60×2 | 3.74 | 22.44 | Table |
| 60×60×3 | 5.54 | 33.24 | Table |
| 70×70×2 | 4.38 | 26.28 | Table |
| 70×70×3 | 6.51 | 39.06 | Table |
| 80×80×2 | 4.97 | 29.82 | Table |
| 80×80×3 | 7.44 | 44.64 | Table |
| 90×90×2 | 5.68 | 34.08 | Table |
| 90×90×3 | 8.38 | 50.28 | Table |
| 100×100×2 | 6.154 | 36.93 | Formula |
| 100×100×3 | 9.38 | 56.28 | Table |
| 20×40×2 | 1.87 | 11.22 | Table |
| 20×40×3 | 2.73 | 16.38 | Table |
| 30×60×2 | 2.81 | 16.86 | Table |
| 30×60×3 | 4.25 | 25.5 | Table |
| 40×60×2 | 3.11 | 18.66 | Table |
| 40×60×3 | 4.62 | 27.72 | Table |
| 40×80×2 | 3.74 | 22.44 | Table |
| 40×80×3 | 5.54 | 33.24 | Table |
| 50×100×2 | 4.66 | 27.96 | Table |
| 50×100×3 | 6.95 | 41.7 | Table |
| 60×120×2 | 5.68 | 34.08 | Table |
| 60×120×3 | 8.38 | 50.28 | Table |
box 40×40 with a 2 mm wall weighs 2.45 kg per metre, and a 6 m length weighs 14.7 kg. Basis: Box-section weight table.
For box 40×40 with a 2 mm wall, one tonne is 68.03 lengths of 6 m, that is 69 whole lengths (1,014.3 kg). For any other size use the count-from-weight mode.
The standard weight is the nominal weight by table or formula, the same for every mill. The mill weight is what each mill states for its own length. Pick a mill and its weight and today's price become the basis of the amount.
Pick a mill to see the amount at today's price, then use "Add to cart" or "Proforma". There is no online payment; an Ahantime expert calls to complete the purchase.