RHS 100×50×4
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 | 100 mm | 3.937 in |
| Width | 50 mm | 1.9685 in |
| Thickness, t | 4 mm | 0.15748 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,400,000 mm⁴ | 3.3635 in⁴ |
| Elastic modulus, Sₓ | 27,900 mm³ | 1.7026 in³ |
| Plastic modulus, Zₓ | 35,200 mm³ | 2.148 in³ |
| Radius of gyration, rₓ | 35.3 mm | 1.3898 in |
| Distance to top fibre | 50 mm | 1.9685 in |
| Distance to bottom fibre | 50 mm | 1.9685 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 462,000 mm⁴ | 1.11 in⁴ |
| Elastic modulus, S_y | 18,500 mm³ | 1.1289 in³ |
| Plastic modulus, Z_y | 21,500 mm³ | 1.312 in³ |
| Radius of gyration, r_y | 20.3 mm | 0.799213 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,130,000 mm⁴ | 2.7148 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 8.78 kg/m | 5.8999 lb/ft |