Steel Beam Sizes / UK / Universal Beams / UB 305×127×37
UB 305×127×37 Steel Beam Dimensions and Properties
UK Universal beams · v2023.11
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
UB 305×127×37 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 | 24.86 lb/ft | 37.00 kg/m |
| Depth, d | 11.98 in | 304.40 mm |
| Flange width, bf | 4.86 in | 123.40 mm |
| tw | 0.280 in | 7.100 mm |
| tf | 0.421 in | 10.700 mm |
| Area | 7.32 in² | 4,720.00 mm² |
| Ix | 172.26 in⁴ | 71,700,000 mm⁴ |
| Iy | 8.07 in⁴ | 3,360,000 mm⁴ |
| Sx | 28.74 in³ | 471,000.00 mm³ |
| Sy | 3.36 in³ | 55,000.00 mm³ |
| Zx | 32.89 in³ | 539,000.00 mm³ |
| Zy | 5.21 in³ | 85,400.00 mm³ |
| rx | 4.84 in | 123.00 mm |
| ry | 1.05 in | 26.70 mm |
| J | 0.36 in⁴ | 148,000.00 mm⁴ |
| Cw | 269.24 in⁶ | 72,300,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 305×127×37.
Lighter in Universal beams
UB 356×127×33
- Weight
- 33.1 kg/m (-11%)
- Depth
- 349.0 mm (+15%)
- Ix
- 82,500,000 mm⁴ (+15%)
Heavier in Universal beams
UB 406×140×39
- Weight
- 39.0 kg/m (+5.4%)
- Depth
- 398.0 mm (+31%)
- Ix
- 125,000,000 mm⁴ (+74%)
Closest Iₓ in Universal beams
UB 254×146×43
- Weight
- 43.0 kg/m (+16%)
- Depth
- 259.6 mm (-15%)
- Ix
- 65,400,000 mm⁴ (-8.8%)
Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology