RHS 400×150×6.3
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 | 400 mm | 15.748 in |
| Width | 150 mm | 5.9055 in |
| Thickness, t | 6.3 mm | 0.248031 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 133,000,000 mm⁴ | 319.5338 in⁴ |
| Elastic modulus, Sₓ | 663,000 mm³ | 40.4587 in³ |
| Plastic modulus, Zₓ | 836,000 mm³ | 51.0159 in³ |
| Radius of gyration, rₓ | 140 mm | 5.5118 in |
| Distance to top fibre | 200 mm | 7.874 in |
| Distance to bottom fibre | 200 mm | 7.874 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 28,500,000 mm⁴ | 68.4715 in⁴ |
| Elastic modulus, S_y | 380,000 mm³ | 23.189 in³ |
| Plastic modulus, Z_y | 418,000 mm³ | 25.5079 in³ |
| Radius of gyration, r_y | 65.1 mm | 2.563 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 76,000,000 mm⁴ | 182.5907 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 52.8 kg/m | 35.48 lb/ft |