CHS 21.3×2.6
Circular hollow sections from Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Thickness, t | 2.6 mm | 0.102362 in |
| Outside diameter | 21.3 mm | 0.838583 in |
| Inside diameter | 16.1 mm | 0.633858 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 6,810 mm⁴ | 0.016361 in⁴ |
| Elastic modulus, Sₓ | 639 mm³ | 0.038994 in³ |
| Plastic modulus, Zₓ | 915 mm³ | 0.055837 in³ |
| Radius of gyration, rₓ | 6.68 mm | 0.262992 in |
| Distance to top fibre | 10.65 mm | 0.4192915 in |
| Distance to bottom fibre | 10.65 mm | 0.4192915 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 6,810 mm⁴ | 0.016361 in⁴ |
| Elastic modulus, S_y | 639 mm³ | 0.038994 in³ |
| Plastic modulus, Z_y | 915 mm³ | 0.055837 in³ |
| Radius of gyration, r_y | 6.68 mm | 0.262992 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 13,600 mm⁴ | 0.032674 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 1.2 kg/m | 0.806363 lb/ft |