RHS 90×50×7.1
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 | 90 mm | 3.5433 in |
| Width | 50 mm | 1.9685 in |
| Thickness, t | 7.1 mm | 0.279528 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,620,000 mm⁴ | 3.8921 in⁴ |
| Elastic modulus, Sₓ | 36,000 mm³ | 2.1969 in³ |
| Plastic modulus, Zₓ | 47,200 mm³ | 2.8803 in³ |
| Radius of gyration, rₓ | 30.6 mm | 1.2047 in |
| Distance to top fibre | 45 mm | 1.7717 in |
| Distance to bottom fibre | 45 mm | 1.7717 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 609,000 mm⁴ | 1.4631 in⁴ |
| Elastic modulus, S_y | 24,400 mm³ | 1.489 in³ |
| Plastic modulus, Z_y | 30,500 mm³ | 1.8612 in³ |
| Radius of gyration, r_y | 18.8 mm | 0.740157 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,490,000 mm⁴ | 3.5797 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 13.6 kg/m | 9.1388 lb/ft |