Steel Beam Sizes / Europe / RHS / RHS 400×300×11
RHS 400×300×11 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 400×300×11 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 | 77.95 lb/ft | 116.00 kg/m |
| Height | 15.75 in | 400.00 mm |
| Width | 11.81 in | 300.00 mm |
| t | 0.433 in | 11.000 mm |
| Area | 22.94 in² | 14,800.00 mm² |
| Ix | 824.06 in⁴ | 343,000,000 mm⁴ |
| Iy | 528.55 in⁴ | 220,000,000 mm⁴ |
| Sx | 104.96 in³ | 1,720,000 mm³ |
| Sy | 89.70 in³ | 1,470,000 mm³ |
| Zx | 124.49 in³ | 2,040,000 mm³ |
| Zy | 102.52 in³ | 1,680,000 mm³ |
| rx | 5.98 in | 152.00 mm |
| ry | 4.80 in | 122.00 mm |
| J | 1,001.85 in⁴ | 417,000,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 400×300×11.
Lighter in Rectangular hollow sections
RHS 300×200×16
- Weight
- 115.0 kg/m (-0.9%)
- Depth
- 300.0 mm (-25%)
- Ix
- 174,000,000 mm⁴ (-49%)
Heavier in Rectangular hollow sections
RHS 500×300×10
- Weight
- 122.0 kg/m (+5.2%)
- Depth
- 500.0 mm (+25%)
- Ix
- 538,000,000 mm⁴ (+57%)
Closest Iₓ in Rectangular hollow sections
RHS 500×200×8
- Weight
- 85.4 kg/m (-26%)
- Depth
- 500.0 mm (+25%)
- Ix
- 340,000,000 mm⁴ (-0.9%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology