Steel Beam Sizes / Europe / RHS / RHS 300×100×10
RHS 300×100×10 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 300×100×10 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 | 39.51 lb/ft | 58.80 kg/m |
| Height | 11.81 in | 300.00 mm |
| Width | 3.94 in | 100.00 mm |
| t | 0.394 in | 10.000 mm |
| Area | 11.61 in² | 7,490.00 mm² |
| Ix | 182.83 in⁴ | 76,100,000 mm⁴ |
| Iy | 30.75 in⁴ | 12,800,000 mm⁴ |
| Sx | 31.00 in³ | 508,000.00 mm³ |
| Sy | 15.56 in³ | 255,000.00 mm³ |
| Zx | 40.64 in³ | 666,000.00 mm³ |
| Zy | 18.06 in³ | 296,000.00 mm³ |
| rx | 3.98 in | 101.00 mm |
| ry | 1.63 in | 41.30 mm |
| J | 88.41 in⁴ | 36,800,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 300×100×10.
Lighter in Rectangular hollow sections
RHS 350×250×6.3
- Weight
- 57.8 kg/m (-1.7%)
- Depth
- 350.0 mm (+17%)
- Ix
- 132,000,000 mm⁴ (+73%)
Heavier in Rectangular hollow sections
RHS 200×100×14.2
- Weight
- 58.9 kg/m (+0.2%)
- Depth
- 200.0 mm (-33%)
- Ix
- 34,200,000 mm⁴ (-55%)
Closest Iₓ in Rectangular hollow sections
RHS 350×150×5
- Weight
- 38.3 kg/m (-35%)
- Depth
- 350.0 mm (+17%)
- Ix
- 76,600,000 mm⁴ (+0.7%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology