Steel Beam Sizes / CISC / Angles / L51×51×4.8
L51×51×4.8 Steel Beam Dimensions and Properties
CISC Angles · v12.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
L51×51×4.8 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 | 2.44 lb/ft | 3.60 kg/m |
| Width | 2.00 in | 50.80 mm |
| Height | 2.00 in | 50.80 mm |
| t | 0.187 in | 4.760 mm |
| Area | 0.71 in² | 461.00 mm² |
| Ix | 0.27 in⁴ | 113,000.00 mm⁴ |
| Iy | 0.27 in⁴ | 113,000.00 mm⁴ |
| Sx | 0.19 in³ | 3,120.00 mm³ |
| Sy | 0.19 in³ | 3,120.00 mm³ |
| rx | 0.62 in | 15.70 mm |
| ry | 0.62 in | 15.70 mm |
| J | 0.01 in⁴ | 3,480.00 mm⁴ |
| Cw | 0.00 in⁶ | 680,000.00 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus L51×51×4.8.
Lighter in L51
L51×38×4.8
- Weight
- 3.1 kg/m (-13%)
- Depth
- 50.8 mm (0.0%)
- Ix
- 103,000 mm⁴ (-8.8%)
Heavier in L51
L51×38×6.4
- Weight
- 4.2 kg/m (+14%)
- Depth
- 50.8 mm (0.0%)
- Ix
- 131,000 mm⁴ (+16%)
Closest Iₓ in L51
L51×51×6.4
- Weight
- 4.7 kg/m (+31%)
- Depth
- 50.8 mm (0.0%)
- Ix
- 145,000 mm⁴ (+28%)
Similar weight in L64
L64×38×4.8
- Weight
- 3.6 kg/m (0.0%)
- Depth
- 63.5 mm (+25%)
- Ix
- 192,000 mm⁴ (+70%)
Source: CISC Structural Section Tables SST12.1 · v12.1 · Methodology