Metal weight

Round tube 139.7×4 mm weight

Steel Round tube Ø139.7×4 weighs 13.39 kg/m. A 6 m bar weighs 80.3 kg and a 12 m bar 160.6 kg. Values are theoretical, for a density of 7.85 g/cm³.

Weight per metre13.39kg/m
6 m bar80.3kg
12 m bar160.6kg
Metres per tonne74.7m
Painting surface0.439m²/m
Ø 139.7 × 4 mm
Outside diameter
139.7 mm
Wall thickness
4 mm
Section area
17.05 cm²
Inside diameter
131.7 mm
Inch (approx.)
5″
Outer surface
0.439 m²/m
Internal volume
13.62 l/m
Outer surface
0.439 m²/m

Weight by length

LengthSteelStainless 304Aluminium
1 m13.39 kg13.52 kg4.60 kg
2 m26.77 kg27.05 kg9.21 kg
3 m40.16 kg40.57 kg13.81 kg
4 m53.55 kg54.09 kg18.42 kg
5 m66.93 kg67.61 kg23.02 kg
6 m80.32 kg81.14 kg27.63 kg
8 m107.09 kg108.18 kg36.83 kg
10 m133.86 kg135.23 kg46.04 kg
12 m160.64 kg162.27 kg55.25 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 Ø139.7×4, the section area is 17.05 cm², so 1 metre = 17.05 × 0.785 = 13.386 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 Ø139.7×2.6Round tube Ø139.7×2.9Round tube Ø139.7×3.2Round tube Ø139.7×3.6Round tube Ø139.7×4Round tube Ø139.7×4.5Round tube Ø139.7×5Round tube Ø139.7×5.6Round tube Ø139.7×6.3Round tube Ø139.7×7.1Round tube Ø139.7×8Round tube Ø139.7×10Round tube Ø139.7×12.5Round tube Ø33.7×4Round tube Ø42.4×4Round tube Ø48.3×4Round tube Ø60.3×4Round tube Ø76.1×4Round tube Ø88.9×4Round tube Ø101.6×4Round tube Ø108×4Round tube Ø114.3×4Round tube Ø133×4Round tube Ø159×4Full table →

Working out a whole order?

Add Round tube Ø139.7×4 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 Ø139.7×4 weigh?

One metre of steel Round tube Ø139.7×4 weighs 13.39 kg.

How much does a 6 m bar of Round tube Ø139.7×4 weigh?

A 6 m bar weighs 80.3 kg and a 12 m bar 160.6 kg.

How many metres of Round tube Ø139.7×4 are in one tonne?

One tonne contains about 74.7 metres.