CHS 219.1×7.1

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, t7.1 mm0.279528 in
Outside diameter219.1 mm8.626 in
Inside diameter204.9 mm8.0669 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ26,600,000 mm⁴63.9068 in⁴
Elastic modulus, Sₓ243,000 mm³14.8288 in³
Plastic modulus, Zₓ319,000 mm³19.4666 in³
Radius of gyration, rₓ75 mm2.9528 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_y26,600,000 mm⁴63.9068 in⁴
Elastic modulus, S_y243,000 mm³14.8288 in³
Plastic modulus, Z_y319,000 mm³19.4666 in³
Radius of gyration, r_y75 mm2.9528 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J53,200,000 mm⁴127.8135 in⁴

Mass

PropertyMetricImperial
Mass per metre37.1 kg/m24.93 lb/ft
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