Metal weight

Round tube 21.3×2.9 mm weight

Steel Round tube Ø21.3×2.9 weighs 1.32 kg/m. A 6 m bar weighs 7.9 kg and a 12 m bar 15.8 kg. Values are theoretical, for a density of 7.85 g/cm³.

Weight per metre1.32kg/m
6 m bar7.9kg
12 m bar15.8kg
Metres per tonne759.9m
Painting surface0.067m²/m
Ø 21.3 × 2.9 mm
Outside diameter
21.3 mm
Wall thickness
2.9 mm
Section area
1.68 cm²
Inside diameter
15.5 mm
Inch (approx.)
1/2″
Outer surface
0.067 m²/m
Internal volume
0.19 l/m
Outer surface
0.067 m²/m

Weight by length

LengthSteelStainless 304Aluminium
1 m1.32 kg1.33 kg0.45 kg
2 m2.63 kg2.66 kg0.91 kg
3 m3.95 kg3.99 kg1.36 kg
4 m5.26 kg5.32 kg1.81 kg
5 m6.58 kg6.65 kg2.26 kg
6 m7.90 kg7.98 kg2.72 kg
8 m10.53 kg10.63 kg3.62 kg
10 m13.16 kg13.29 kg4.53 kg
12 m15.79 kg15.95 kg5.43 kg

How it was calculated

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

kg/m = (D − t) × t × 0.02466, where D is the outside diameter and t the wall thickness, in mm.

For Round tube Ø21.3×2.9, the section area is 1.68 cm², so 1 metre = 1.68 × 0.785 = 1.316 kg.

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

Other round tube sizes

Round tube Ø21.3×1.5Round tube Ø21.3×2Round tube Ø21.3×2.3Round tube Ø21.3×2.6Round tube Ø21.3×2.9Round tube Ø26.9×2.9Round tube Ø33.7×2.9Round tube Ø42.4×2.9Round tube Ø48.3×2.9Round tube Ø60.3×2.9Round tube Ø76.1×2.9Round tube Ø88.9×2.9Round tube Ø101.6×2.9Round tube Ø108×2.9Round tube Ø114.3×2.9Round tube Ø133×2.9Round tube Ø139.7×2.9Round tube Ø159×2.9Full table →

Working out a whole order?

Add Round tube Ø21.3×2.9 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 Round tube Ø21.3×2.9 weigh?

One metre of steel Round tube Ø21.3×2.9 weighs 1.32 kg.

How much does a 6 m bar of Round tube Ø21.3×2.9 weigh?

A 6 m bar weighs 7.9 kg and a 12 m bar 15.8 kg.

How many metres of Round tube Ø21.3×2.9 are in one tonne?

One tonne contains about 759.9 metres.