RHS 50×30×3.6
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 | 3.6 mm | 0.141732 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 154,000 mm⁴ | 0.369986 in⁴ |
| Elastic modulus, Sₓ | 6,160 mm³ | 0.375906 in³ |
| Plastic modulus, Zₓ | 7,940 mm³ | 0.484529 in³ |
| Radius of gyration, rₓ | 17.4 mm | 0.685039 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 | 66,700 mm⁴ | 0.160247 in⁴ |
| Elastic modulus, S_y | 4,450 mm³ | 0.271556 in³ |
| Plastic modulus, Z_y | 5,460 mm³ | 0.33319 in³ |
| Radius of gyration, r_y | 11.4 mm | 0.448819 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 154,000 mm⁴ | 0.369986 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 4.01 kg/m | 2.6946 lb/ft |