RHS 400×300×10
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 | 400 mm | 15.748 in |
| Width | 300 mm | 11.811 in |
| Thickness, t | 10 mm | 0.393701 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 315,000,000 mm⁴ | 756.7905 in⁴ |
| Elastic modulus, Sₓ | 1,580,000 mm³ | 96.4175 in³ |
| Plastic modulus, Zₓ | 1,870,000 mm³ | 114.1144 in³ |
| Radius of gyration, rₓ | 153 mm | 6.0236 in |
| Distance to top fibre | 200 mm | 7.874 in |
| Distance to bottom fibre | 200 mm | 7.874 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 202,000,000 mm⁴ | 485.3069 in⁴ |
| Elastic modulus, S_y | 1,350,000 mm³ | 82.3821 in³ |
| Plastic modulus, Z_y | 1,540,000 mm³ | 93.9766 in³ |
| Radius of gyration, r_y | 122 mm | 4.8032 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 382,000,000 mm⁴ | 917.7587 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 106 kg/m | 71.2287 lb/ft |