Metal weight

Square tube 120×120×5 mm weight

Steel Square tube 120×120×5, cold-formed (EN 10219), weighs 17.55 kg/m. A 6 m bar weighs 105.3 kg and a 12 m bar 210.6 kg. The hot-finished version (EN 10210) has tighter corners and weighs 17.84 kg/m. Values are theoretical, for a density of 7.85 g/cm³.

Weight per metre17.55kg/m
6 m bar105.3kg
12 m bar210.6kg
Metres per tonne57.0m
Painting surface0.463m²/m
120 × 120 × 5 mm
Side
120 mm
Wall thickness
5 mm
Cold-formed, EN 10219
17.55 kg/m
Hot-finished, EN 10210
17.84 kg/m
Section area
22.36 cm²
Outer surface
0.463 m²/m
Outer surface
0.463 m²/m

Weight by length

LengthSteelStainless 304Aluminium
1 m17.55 kg17.73 kg6.04 kg
2 m35.10 kg35.46 kg12.07 kg
3 m52.65 kg53.19 kg18.11 kg
4 m70.20 kg70.91 kg24.14 kg
5 m87.75 kg88.64 kg30.18 kg
6 m105.30 kg106.37 kg36.22 kg
8 m140.40 kg141.83 kg48.29 kg
10 m175.50 kg177.28 kg60.36 kg
12 m210.60 kg212.74 kg72.43 kg

How it was calculated

The weight is the section area multiplied by the material density:

kg/m = section area (mm²) × 0.00785. The area comes from side and thickness, minus the rounded corners: for cold-formed tube (EN 10219) the outer radius is 2t up to 6 mm wall, 2.5t up to 10 mm and 3t above; for hot-finished tube (EN 10210) the outer radius is 1.5t.

For Square tube 120×120×5, the section area is 22.36 cm², so 1 metre = 22.36 × 0.785 = 17.550 kg.

The real weight can differ by a few percent because of rolling tolerances. For other materials or lengths use the calculator.

Other square tube sizes

Square tube 120×120×2Square tube 120×120×2.5Square tube 120×120×3Square tube 120×120×4Square tube 120×120×5Square tube 120×120×6Square tube 120×120×8Square tube 120×120×10Square tube 120×120×12.5Square tube 35×35×5Square tube 40×40×5Square tube 45×45×5Square tube 50×50×5Square tube 60×60×5Square tube 70×70×5Square tube 80×80×5Square tube 90×90×5Square tube 100×100×5Square tube 140×140×5Square tube 150×150×5Square tube 160×160×5Square tube 180×180×5Square tube 200×200×5Square tube 250×250×5Full table →

Working out a whole order?

Add Square tube 120×120×5 to the materials list and see the total weight and cost of the order, together with the other products.

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Frequently asked questions

How much does one metre of Square tube 120×120×5 weigh?

One metre of steel Square tube 120×120×5 weighs 17.55 kg.

How much does a 6 m bar of Square tube 120×120×5 weigh?

A 6 m bar weighs 105.3 kg and a 12 m bar 210.6 kg.

How many metres of Square tube 120×120×5 are in one tonne?

One tonne contains about 57.0 metres.