Steel Beam Sizes / Europe / RHS / RHS 400×200×8
RHS 400×200×8 Steel Beam Dimensions and Properties
EN Rectangular hollow sections · v2026.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
RHS 400×200×8 dimensions
Not to scale. Dimensions shown for reference.
Section properties
Symbols match the steel section finder. Imperial and metric values are shown side by side.
| Property | Imperial | Metric |
|---|---|---|
| Weight | 48.92 lb/ft | 72.80 kg/m |
| Height | 15.75 in | 400.00 mm |
| Width | 7.87 in | 200.00 mm |
| t | 0.315 in | 8.000 mm |
| Area | 14.38 in² | 9,280.00 mm² |
| Ix | 470.89 in⁴ | 196,000,000 mm⁴ |
| Iy | 160.01 in⁴ | 66,600,000 mm⁴ |
| Sx | 59.68 in³ | 978,000.00 mm³ |
| Sy | 40.64 in³ | 666,000.00 mm³ |
| Zx | 73.23 in³ | 1,200,000 mm³ |
| Zy | 45.34 in³ | 743,000.00 mm³ |
| rx | 5.71 in | 145.00 mm |
| ry | 3.33 in | 84.70 mm |
| J | 377.19 in⁴ | 157,000,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 400×200×8.
Lighter in Rectangular hollow sections
RHS 250×150×12.5
- Weight
- 72.3 kg/m (-0.7%)
- Depth
- 250.0 mm (-37%)
- Ix
- 73,900,000 mm⁴ (-62%)
Heavier in Rectangular hollow sections
RHS 300×250×8.8
- Weight
- 72.9 kg/m (+0.1%)
- Depth
- 300.0 mm (-25%)
- Ix
- 124,000,000 mm⁴ (-37%)
Closest Iₓ in Rectangular hollow sections
RHS 350×150×14.2
- Weight
- 103.0 kg/m (+41%)
- Depth
- 350.0 mm (-12%)
- Ix
- 192,000,000 mm⁴ (-2.0%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology