CHS 219.1×6.3

Circular hollow sections from Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1.

219.1 mm219.1 mm

Outline drawn from the published dimensions. Fillets and root radii are not shown.

Dimensions

PropertyMetricImperial
Thickness, t6.3 mm0.248031 in
Outside diameter219.1 mm8.626 in
Inside diameter206.5 mm8.1299 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ23,900,000 mm⁴57.42 in⁴
Elastic modulus, Sₓ218,000 mm³13.3032 in³
Plastic modulus, Zₓ285,000 mm³17.3918 in³
Radius of gyration, rₓ75.3 mm2.9646 in
Distance to top fibre109.55 mm4.313 in
Distance to bottom fibre109.55 mm4.313 in

Bending about the minor axis

PropertyMetricImperial
Second moment of area, I_y23,900,000 mm⁴57.42 in⁴
Elastic modulus, S_y218,000 mm³13.3032 in³
Plastic modulus, Z_y285,000 mm³17.3918 in³
Radius of gyration, r_y75.3 mm2.9646 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J47,700,000 mm⁴114.5997 in⁴

Mass

PropertyMetricImperial
Mass per metre33.1 kg/m22.2422 lb/ft
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