RHS 350×250×6.3
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 | 350 mm | 13.7795 in |
| Width | 250 mm | 9.8425 in |
| Thickness, t | 6.3 mm | 0.248031 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 132,000,000 mm⁴ | 317.1313 in⁴ |
| Elastic modulus, Sₓ | 754,000 mm³ | 46.0119 in³ |
| Plastic modulus, Zₓ | 892,000 mm³ | 54.4332 in³ |
| Radius of gyration, rₓ | 134 mm | 5.2756 in |
| Distance to top fibre | 175 mm | 6.8898 in |
| Distance to bottom fibre | 175 mm | 6.8898 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 78,800,000 mm⁴ | 189.3178 in⁴ |
| Elastic modulus, S_y | 631,000 mm³ | 38.506 in³ |
| Plastic modulus, Z_y | 709,000 mm³ | 43.2658 in³ |
| Radius of gyration, r_y | 104 mm | 4.0945 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 152,000,000 mm⁴ | 365.1815 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 57.8 kg/m | 38.8398 lb/ft |