RHS 200×120×12.5
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 | 200 mm | 7.874 in |
| Width | 120 mm | 4.7244 in |
| Thickness, t | 12.5 mm | 0.492126 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 35,800,000 mm⁴ | 86.0098 in⁴ |
| Elastic modulus, Sₓ | 358,000 mm³ | 21.8465 in³ |
| Plastic modulus, Zₓ | 455,000 mm³ | 27.7658 in³ |
| Radius of gyration, rₓ | 70.4 mm | 2.7717 in |
| Distance to top fibre | 100 mm | 3.937 in |
| Distance to bottom fibre | 100 mm | 3.937 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 15,600,000 mm⁴ | 37.4792 in⁴ |
| Elastic modulus, S_y | 260,000 mm³ | 15.8662 in³ |
| Plastic modulus, Z_y | 314,000 mm³ | 19.1615 in³ |
| Radius of gyration, r_y | 46.6 mm | 1.8346 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 35,700,000 mm⁴ | 85.7696 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 56.6 kg/m | 38.0334 lb/ft |