Steel Beam Sizes / Europe / RHS / RHS 450×150×8
RHS 450×150×8 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 450×150×8 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 | 17.72 in | 450.00 mm |
| Width | 5.91 in | 150.00 mm |
| t | 0.315 in | 8.000 mm |
| Area | 14.38 in² | 9,280.00 mm² |
| Ix | 535.76 in⁴ | 223,000,000 mm⁴ |
| Iy | 93.94 in⁴ | 39,100,000 mm⁴ |
| Sx | 60.41 in³ | 990,000.00 mm³ |
| Sy | 31.85 in³ | 522,000.00 mm³ |
| Zx | 77.50 in³ | 1,270,000 mm³ |
| Zy | 35.27 in³ | 578,000.00 mm³ |
| rx | 6.10 in | 155.00 mm |
| ry | 2.56 in | 65.00 mm |
| J | 261.87 in⁴ | 109,000,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 450×150×8.
Lighter in Rectangular hollow sections
RHS 250×150×12.5
- Weight
- 72.3 kg/m (-0.7%)
- Depth
- 250.0 mm (-44%)
- Ix
- 73,900,000 mm⁴ (-67%)
Heavier in Rectangular hollow sections
RHS 300×250×8.8
- Weight
- 72.9 kg/m (+0.1%)
- Depth
- 300.0 mm (-33%)
- Ix
- 124,000,000 mm⁴ (-44%)
Closest Iₓ in Rectangular hollow sections
RHS 350×250×11
- Weight
- 98.8 kg/m (+36%)
- Depth
- 350.0 mm (-22%)
- Ix
- 219,000,000 mm⁴ (-1.8%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology