Metal weight

Square tube 120×120×8 mm weight

Steel Square tube 120×120×8, cold-formed (EN 10219), weighs 26.41 kg/m. A 6 m bar weighs 158.5 kg and a 12 m bar 316.9 kg. The hot-finished version (EN 10210) has tighter corners and weighs 27.60 kg/m. Values are theoretical, for a density of 7.85 g/cm³.

Weight per metre26.41kg/m
6 m bar158.5kg
12 m bar316.9kg
Metres per tonne37.9m
Painting surface0.446m²/m
120 × 120 × 8 mm
Side
120 mm
Wall thickness
8 mm
Cold-formed, EN 10219
26.41 kg/m
Hot-finished, EN 10210
27.60 kg/m
Section area
33.64 cm²
Outer surface
0.446 m²/m
Outer surface
0.446 m²/m

Weight by length

LengthSteelStainless 304Aluminium
1 m26.41 kg26.68 kg9.08 kg
2 m52.82 kg53.36 kg18.17 kg
3 m79.23 kg80.04 kg27.25 kg
4 m105.64 kg106.71 kg36.33 kg
5 m132.05 kg133.39 kg45.42 kg
6 m158.46 kg160.07 kg54.50 kg
8 m211.27 kg213.43 kg72.67 kg
10 m264.09 kg266.78 kg90.83 kg
12 m316.91 kg320.14 kg109.00 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 120×120×8, the section area is 33.64 cm², so 1 metre = 33.64 × 0.785 = 26.409 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 60×60×8Square tube 70×70×8Square tube 80×80×8Square tube 90×90×8Square tube 100×100×8Square tube 140×140×8Square tube 150×150×8Square tube 160×160×8Square tube 180×180×8Square tube 200×200×8Square tube 250×250×8Square tube 300×300×8Full table →

Working out a whole order?

Add Square tube 120×120×8 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 120×120×8 weigh?

One metre of steel Square tube 120×120×8 weighs 26.41 kg.

How much does a 6 m bar of Square tube 120×120×8 weigh?

A 6 m bar weighs 158.5 kg and a 12 m bar 316.9 kg.

How many metres of Square tube 120×120×8 are in one tonne?

One tonne contains about 37.9 metres.