RHS 450×250×8.8
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 | 8.8 mm | 0.346457 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 328,000,000 mm⁴ | 788.0232 in⁴ |
| Elastic modulus, Sₓ | 1,460,000 mm³ | 89.0947 in³ |
| Plastic modulus, Zₓ | 1,770,000 mm³ | 108.012 in³ |
| Radius of gyration, rₓ | 166 mm | 6.5354 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 | 132,000,000 mm⁴ | 317.1313 in⁴ |
| Elastic modulus, S_y | 1,060,000 mm³ | 64.6852 in³ |
| Plastic modulus, Z_y | 1,180,000 mm³ | 72.008 in³ |
| Radius of gyration, r_y | 105 mm | 4.1339 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 296,000,000 mm⁴ | 711.1428 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 93.6 kg/m | 62.8963 lb/ft |