RHS 450×250×11
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 | 450 mm | 17.7165 in |
| Width | 250 mm | 9.8425 in |
| Thickness, t | 11 mm | 0.433071 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 402,000,000 mm⁴ | 965.8089 in⁴ |
| Elastic modulus, Sₓ | 1,790,000 mm³ | 109.2325 in³ |
| Plastic modulus, Zₓ | 2,180,000 mm³ | 133.0318 in³ |
| Radius of gyration, rₓ | 165 mm | 6.4961 in |
| Distance to top fibre | 225 mm | 8.8583 in |
| Distance to bottom fibre | 225 mm | 8.8583 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 161,000,000 mm⁴ | 386.804 in⁴ |
| Elastic modulus, S_y | 1,290,000 mm³ | 78.7206 in³ |
| Plastic modulus, Z_y | 1,450,000 mm³ | 88.4844 in³ |
| Radius of gyration, r_y | 104 mm | 4.0945 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 363,000,000 mm⁴ | 872.111 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 116 kg/m | 77.9484 lb/ft |