Steel Beam Sizes / UK / RHS / RHS 300×250×12.5
RHS 300×250×12.5 Dimensions, Weight and Section Properties
UK Rectangular hollow sections · v2023.11
RHS 300×250×12.5: 102 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
RHS 300×250×12.5 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 | 68.54 lb/ft | 102.00 kg/m |
| Height | 11.81 in | 300.00 mm |
| Width | 9.84 in | 250.00 mm |
| t | 0.492 in | 12.500 mm |
| Area | 20.15 in² | 13,000.00 mm² |
| Ix | 406.02 in⁴ | 169,000,000 mm⁴ |
| Iy | 305.12 in⁴ | 127,000,000 mm⁴ |
| Sx | 68.35 in³ | 1,120,000 mm³ |
| Sy | 61.63 in³ | 1,010,000 mm³ |
| Zx | 81.77 in³ | 1,340,000 mm³ |
| Zy | 72.01 in³ | 1,180,000 mm³ |
| rx | 4.49 in | 114.00 mm |
| ry | 3.89 in | 98.90 mm |
| J | 545.37 in⁴ | 227,000,000 mm⁴ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus RHS 300×250×12.5.
Lighter in Rectangular hollow sections
RHS 260×180×16
- Weight
- 100.0 kg/m (-2.0%)
- Depth
- 260.0 mm (-13%)
- Ix
- 112,000,000 mm⁴ (-34%)
Heavier in Rectangular hollow sections
RHS 300×200×14.2
- Weight
- 103.0 kg/m (+1.0%)
- Depth
- 300.0 mm (0.0%)
- Ix
- 158,000,000 mm⁴ (-6.5%)
Another Iₓ option in Rectangular hollow sections
RHS 350×200×10
- Weight
- 82.4 kg/m (-19%)
- Depth
- 350.0 mm (+17%)
- Ix
- 172,000,000 mm⁴ (+1.8%)
Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology