RHS 500×200×12.5
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 | 500 mm | 19.685 in |
| Width | 200 mm | 7.874 in |
| Thickness, t | 12.5 mm | 0.492126 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 510,000,000 mm⁴ | 1,225.28 in⁴ |
| Elastic modulus, Sₓ | 2,040,000 mm³ | 124.4884 in³ |
| Plastic modulus, Zₓ | 2,590,000 mm³ | 158.0515 in³ |
| Radius of gyration, rₓ | 175 mm | 6.8898 in |
| Distance to top fibre | 250 mm | 9.8425 in |
| Distance to bottom fibre | 250 mm | 9.8425 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 119,000,000 mm⁴ | 285.8986 in⁴ |
| Elastic modulus, S_y | 1,190,000 mm³ | 72.6183 in³ |
| Plastic modulus, Z_y | 1,350,000 mm³ | 82.3821 in³ |
| Radius of gyration, r_y | 84.5 mm | 3.3268 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 315,000,000 mm⁴ | 756.7905 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 131 kg/m | 88.0279 lb/ft |