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Metal weight

Square tube 120×120×12.5 mm weight

Steel Square tube 120×120×12.5, cold-formed (EN 10219), weighs 36.93 kg/m. A 6 m bar weighs 221.6 kg and a 12 m bar 443.2 kg. The hot-finished version (EN 10210) has tighter corners and weighs 40.88 kg/m. Values are theoretical, for a density of 7.85 g/cm³.

Weight per metre36.93kg/m
6 m bar221.6kg
12 m bar443.2kg
Metres per tonne27.1m
Painting surface0.416m²/m
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120 × 120 × 12.5 mm
Side
120 mm
Wall thickness
12.5 mm
Cold-formed, EN 10219
36.93 kg/m
Hot-finished, EN 10210
40.88 kg/m
Section area
47.04 cm²
Outer surface
0.416 m²/m
Outer surface
0.416 m²/m

Weight by length

LengthSteelStainless 304Aluminium
1 m36.93 kg37.31 kg12.70 kg
2 m73.86 kg74.61 kg25.40 kg
3 m110.79 kg111.92 kg38.11 kg
4 m147.72 kg149.22 kg50.81 kg
5 m184.65 kg186.53 kg63.51 kg
6 m221.58 kg223.83 kg76.21 kg
8 m295.43 kg298.45 kg101.61 kg
10 m369.29 kg373.06 kg127.02 kg
12 m443.15 kg447.67 kg152.42 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 120×120×12.5, the section area is 47.04 cm², so 1 metre = 47.04 × 0.785 = 36.929 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 90×90×12.5Square tube 100×100×12.5Square tube 140×140×12.5Square tube 150×150×12.5Square tube 160×160×12.5Square tube 180×180×12.5Square tube 200×200×12.5Square tube 250×250×12.5Square tube 300×300×12.5Full table →

Working out a whole order?

Add Square tube 120×120×12.5 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 120×120×12.5 weigh?

One metre of steel Square tube 120×120×12.5 weighs 36.93 kg.

How much does a 6 m bar of Square tube 120×120×12.5 weigh?

A 6 m bar weighs 221.6 kg and a 12 m bar 443.2 kg.

How many metres of Square tube 120×120×12.5 are in one tonne?

One tonne contains about 27.1 metres.