RHS 300×200×12.5
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 | 300 mm | 11.811 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 | 143,000,000 mm⁴ | 343.5589 in⁴ |
| Elastic modulus, Sₓ | 952,000 mm³ | 58.0946 in³ |
| Plastic modulus, Zₓ | 1,160,000 mm³ | 70.7875 in³ |
| Radius of gyration, rₓ | 110 mm | 4.3307 in |
| Distance to top fibre | 150 mm | 5.9055 in |
| Distance to bottom fibre | 150 mm | 5.9055 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 75,400,000 mm⁴ | 181.1492 in⁴ |
| Elastic modulus, S_y | 754,000 mm³ | 46.0119 in³ |
| Plastic modulus, Z_y | 877,000 mm³ | 53.5178 in³ |
| Radius of gyration, r_y | 80.2 mm | 3.1575 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 157,000,000 mm⁴ | 377.194 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 91.9 kg/m | 61.7539 lb/ft |