Metal weight

Square tube 300×300×6 mm weight

Steel Square tube 300×300×6, cold-formed (EN 10219), weighs 54.66 kg/m. A 6 m bar weighs 328.0 kg and a 12 m bar 655.9 kg. The hot-finished version (EN 10210) has tighter corners and weighs 55.09 kg/m. Values are theoretical, for a density of 7.85 g/cm³.

Weight per metre54.66kg/m
6 m bar328.0kg
12 m bar655.9kg
Metres per tonne18.3m
Painting surface1.179m²/m
300 × 300 × 6 mm
Side
300 mm
Wall thickness
6 mm
Cold-formed, EN 10219
54.66 kg/m
Hot-finished, EN 10210
55.09 kg/m
Section area
69.63 cm²
Outer surface
1.179 m²/m
Outer surface
1.179 m²/m

Weight by length

LengthSteelStainless 304Aluminium
1 m54.66 kg55.22 kg18.80 kg
2 m109.32 kg110.44 kg37.60 kg
3 m163.99 kg165.66 kg56.40 kg
4 m218.65 kg220.88 kg75.20 kg
5 m273.31 kg276.09 kg94.00 kg
6 m327.97 kg331.31 kg112.81 kg
8 m437.29 kg441.75 kg150.41 kg
10 m546.62 kg552.19 kg188.01 kg
12 m655.94 kg662.63 kg225.61 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 300×300×6, the section area is 69.63 cm², so 1 metre = 69.63 × 0.785 = 54.662 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 300×300×5Square tube 300×300×6Square tube 300×300×8Square tube 300×300×10Square tube 300×300×12.5Square tube 45×45×6Square tube 50×50×6Square tube 60×60×6Square tube 70×70×6Square tube 80×80×6Square tube 90×90×6Square tube 100×100×6Square tube 120×120×6Square tube 140×140×6Square tube 150×150×6Square tube 160×160×6Square tube 180×180×6Square tube 200×200×6Square tube 250×250×6Full table →

Working out a whole order?

Add Square tube 300×300×6 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 300×300×6 weigh?

One metre of steel Square tube 300×300×6 weighs 54.66 kg.

How much does a 6 m bar of Square tube 300×300×6 weigh?

A 6 m bar weighs 328.0 kg and a 12 m bar 655.9 kg.

How many metres of Square tube 300×300×6 are in one tonne?

One tonne contains about 18.3 metres.