RHS 500×300×8
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 | 300 mm | 11.811 in |
| Thickness, t | 8 mm | 0.314961 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 437,000,000 mm⁴ | 1,049.897 in⁴ |
| Elastic modulus, Sₓ | 1,750,000 mm³ | 106.7916 in³ |
| Plastic modulus, Zₓ | 2,100,000 mm³ | 128.1499 in³ |
| Radius of gyration, rₓ | 187 mm | 7.3622 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 | 200,000,000 mm⁴ | 480.5019 in⁴ |
| Elastic modulus, S_y | 1,330,000 mm³ | 81.1616 in³ |
| Plastic modulus, Z_y | 1,480,000 mm³ | 90.3151 in³ |
| Radius of gyration, r_y | 126 mm | 4.9606 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 426,000,000 mm⁴ | 1,023.469 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 97.9 kg/m | 65.7858 lb/ft |