RHS 50×30×6.3
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 | 50 mm | 1.9685 in |
| Width | 30 mm | 1.1811 in |
| Thickness, t | 6.3 mm | 0.248031 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 206,000 mm⁴ | 0.494917 in⁴ |
| Elastic modulus, Sₓ | 8,260 mm³ | 0.504056 in³ |
| Plastic modulus, Zₓ | 11,500 mm³ | 0.701773 in³ |
| Radius of gyration, rₓ | 16 mm | 0.629921 in |
| Distance to top fibre | 25 mm | 0.984252 in |
| Distance to bottom fibre | 25 mm | 0.984252 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 85,000 mm⁴ | 0.204213 in⁴ |
| Elastic modulus, S_y | 5,660 mm³ | 0.345394 in³ |
| Plastic modulus, Z_y | 7,680 mm³ | 0.468662 in³ |
| Radius of gyration, r_y | 10.3 mm | 0.405512 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 211,000 mm⁴ | 0.50693 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 6.33 kg/m | 4.2536 lb/ft |