RHS 180×60×4
Rectangular 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 |
|---|---|---|
| Height | 180 mm | 7.0866 in |
| Width | 60 mm | 2.3622 in |
| Thickness, t | 4 mm | 0.15748 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 6,970,000 mm⁴ | 16.7455 in⁴ |
| Elastic modulus, Sₓ | 77,400 mm³ | 4.7232 in³ |
| Plastic modulus, Zₓ | 99,800 mm³ | 6.0902 in³ |
| Radius of gyration, rₓ | 61.6 mm | 2.4252 in |
| Distance to top fibre | 90 mm | 3.5433 in |
| Distance to bottom fibre | 90 mm | 3.5433 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 1,210,000 mm⁴ | 2.907 in⁴ |
| Elastic modulus, S_y | 40,300 mm³ | 2.4593 in³ |
| Plastic modulus, Z_y | 45,200 mm³ | 2.7583 in³ |
| Radius of gyration, r_y | 25.6 mm | 1.0079 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 3,410,000 mm⁴ | 8.1926 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 14.4 kg/m | 9.6764 lb/ft |