RHS 50×30×3
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 | 3 mm | 0.11811 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 136,000 mm⁴ | 0.326741 in⁴ |
| Elastic modulus, Sₓ | 5,430 mm³ | 0.331359 in³ |
| Plastic modulus, Zₓ | 6,880 mm³ | 0.419843 in³ |
| Radius of gyration, rₓ | 17.7 mm | 0.69685 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 | 59,400 mm⁴ | 0.142709 in⁴ |
| Elastic modulus, S_y | 3,960 mm³ | 0.241654 in³ |
| Plastic modulus, Z_y | 4,760 mm³ | 0.290473 in³ |
| Radius of gyration, r_y | 11.7 mm | 0.46063 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 135,000 mm⁴ | 0.324339 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 3.41 kg/m | 2.2914 lb/ft |