CHS 101.6×7.1
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 | 7.1 mm | 0.279528 in |
| Outside diameter | 101.6 mm | 4 in |
| Inside diameter | 87.4 mm | 3.4409 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 2,370,000 mm⁴ | 5.6939 in⁴ |
| Elastic modulus, Sₓ | 46,600 mm³ | 2.8437 in³ |
| Plastic modulus, Zₓ | 63,500 mm³ | 3.875 in³ |
| Radius of gyration, rₓ | 33.5 mm | 1.3189 in |
| Distance to top fibre | 50.8 mm | 2 in |
| Distance to bottom fibre | 50.8 mm | 2 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 2,370,000 mm⁴ | 5.6939 in⁴ |
| Elastic modulus, S_y | 46,600 mm³ | 2.8437 in³ |
| Plastic modulus, Z_y | 63,500 mm³ | 3.875 in³ |
| Radius of gyration, r_y | 33.5 mm | 1.3189 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 4,730,000 mm⁴ | 11.3639 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 16.5 kg/m | 11.0875 lb/ft |