Steel Beam Sizes / Europe / RHS / RHS 350×250×12.5
RHS 350×250×12.5 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 350×250×12.5 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 | 75.26 lb/ft | 112.00 kg/m |
| Height | 13.78 in | 350.00 mm |
| Width | 9.84 in | 250.00 mm |
| t | 0.492 in | 12.500 mm |
| Area | 22.01 in² | 14,200.00 mm² |
| Ix | 586.21 in⁴ | 244,000,000 mm⁴ |
| Iy | 345.96 in⁴ | 144,000,000 mm⁴ |
| Sx | 85.43 in³ | 1,400,000 mm³ |
| Sy | 70.79 in³ | 1,160,000 mm³ |
| Zx | 102.52 in³ | 1,680,000 mm³ |
| Zy | 81.16 in³ | 1,330,000 mm³ |
| rx | 5.16 in | 131.00 mm |
| ry | 3.98 in | 101.00 mm |
| J | 684.72 in⁴ | 285,000,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 350×250×12.5.
Lighter in Rectangular hollow sections
RHS 500×300×8.8
- Weight
- 107.0 kg/m (-4.5%)
- Depth
- 500.0 mm (+43%)
- Ix
- 478,000,000 mm⁴ (+96%)
Heavier in Rectangular hollow sections
RHS 300×200×16
- Weight
- 115.0 kg/m (+2.7%)
- Depth
- 300.0 mm (-14%)
- Ix
- 174,000,000 mm⁴ (-29%)
Closest Iₓ in Rectangular hollow sections
RHS 400×150×12.5
- Weight
- 102.0 kg/m (-8.9%)
- Depth
- 400.0 mm (+14%)
- Ix
- 244,000,000 mm⁴ (0.0%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology