Steel Beam Sizes / UK / Angles / L 120×120×15
L 120×120×15 Steel Beam Dimensions and Properties
UK Angles · v2023.11
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
L 120×120×15 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 | 17.87 lb/ft | 26.60 kg/m |
| Width | 4.72 in | 120.00 mm |
| Height | 4.72 in | 120.00 mm |
| t | 0.591 in | 15.000 mm |
| Area | 5.25 in² | 3,390.00 mm² |
| Ix | 10.69 in⁴ | 4,450,000 mm⁴ |
| Iy | 10.69 in⁴ | 4,450,000 mm⁴ |
| Sx | 3.20 in³ | 52,400.00 mm³ |
| Sy | 3.20 in³ | 52,400.00 mm³ |
| rx | 1.43 in | 36.20 mm |
| ry | 1.43 in | 36.20 mm |
| J | 0.65 in⁴ | 270,000.00 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus L 120×120×15.
Lighter in Angles
L 100×100×18
- Weight
- 26.2 kg/m (-1.5%)
- Depth
- 100.0 mm (-17%)
- Ix
- 2,870,000 mm⁴ (-36%)
Heavier in Angles
L 130×130×14
- Weight
- 27.2 kg/m (+2.3%)
- Depth
- 130.0 mm (+8.3%)
- Ix
- 5,400,000 mm⁴ (+21%)
Closest Iₓ in Angles
L 140×90×10
- Weight
- 17.4 kg/m (-35%)
- Depth
- 140.0 mm (+17%)
- Ix
- 4,410,000 mm⁴ (-0.9%)
Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Eurocode 3 - UK National Annex · Methodology