Metal weight

Flat bar 20×4 mm weight

Steel Flat bar 20×4 weighs 0.63 kg/m. A 6 m bar weighs 3.8 kg and a 12 m bar 7.5 kg. Values are theoretical, for a density of 7.85 g/cm³.

Weight per metre0.63kg/m
6 m bar3.8kg
12 m bar7.5kg
Metres per tonne1,592.4m
Painting surface0.048m²/m
20 × 4 mm
Width × thickness
20 × 4 mm
Section area
0.80 cm²
Outer surface
0.048 m²/m
Outer surface
0.048 m²/m

Weight by length

LengthSteelStainless 304Aluminium
1 m0.63 kg0.63 kg0.22 kg
2 m1.26 kg1.27 kg0.43 kg
3 m1.88 kg1.90 kg0.65 kg
4 m2.51 kg2.54 kg0.86 kg
5 m3.14 kg3.17 kg1.08 kg
6 m3.77 kg3.81 kg1.30 kg
8 m5.02 kg5.08 kg1.73 kg
10 m6.28 kg6.34 kg2.16 kg
12 m7.54 kg7.61 kg2.59 kg

How it was calculated

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

kg/m = width × thickness × 0.00785, in mm.

For Flat bar 20×4, the section area is 0.80 cm², so 1 metre = 0.80 × 0.785 = 0.628 kg.

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

Other flat bar sizes

Flat bar 20×3Flat bar 20×4Flat bar 20×5Flat bar 20×6Flat bar 20×8Flat bar 12×4Flat bar 15×4Flat bar 16×4Flat bar 25×4Flat bar 30×4Flat bar 35×4Flat bar 40×4Flat bar 45×4Flat bar 50×4Flat bar 60×4Flat bar 70×4Flat bar 80×4Flat bar 90×4Flat bar 100×4Flat bar 120×4Flat bar 150×4Full table →

Working out a whole order?

Add Flat bar 20×4 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 Flat bar 20×4 weigh?

One metre of steel Flat bar 20×4 weighs 0.63 kg.

How much does a 6 m bar of Flat bar 20×4 weigh?

A 6 m bar weighs 3.8 kg and a 12 m bar 7.5 kg.

How many metres of Flat bar 20×4 are in one tonne?

One tonne contains about 1,592.4 metres.