Steel Beam Sizes / CISC / Angles / L51×51×6.4
L51×51×6.4 Steel Beam Dimensions and Properties
CISC Angles · v12.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
L51×51×6.4 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 | 3.19 lb/ft | 4.70 kg/m |
| Width | 2.00 in | 50.80 mm |
| Height | 2.00 in | 50.80 mm |
| t | 0.250 in | 6.350 mm |
| Area | 0.94 in² | 605.00 mm² |
| Ix | 0.35 in⁴ | 145,000.00 mm⁴ |
| Iy | 0.35 in⁴ | 145,000.00 mm⁴ |
| Sx | 0.25 in³ | 4,040.00 mm³ |
| Sy | 0.25 in³ | 4,040.00 mm³ |
| rx | 0.61 in | 15.50 mm |
| ry | 0.61 in | 15.50 mm |
| J | 0.02 in⁴ | 8,130.00 mm⁴ |
| Cw | 0.01 in⁶ | 1,540,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus L51×51×6.4.
Lighter in L51
L51×38×6.4
- Weight
- 4.2 kg/m (-13%)
- Depth
- 50.8 mm (0.0%)
- Ix
- 131,000 mm⁴ (-9.7%)
Heavier in L51
L51×51×7.9
- Weight
- 5.8 kg/m (+23%)
- Depth
- 50.8 mm (0.0%)
- Ix
- 173,000 mm⁴ (+19%)
Closest Iₓ in L51
L51×51×4.8
- Weight
- 3.6 kg/m (-24%)
- Depth
- 50.8 mm (0.0%)
- Ix
- 113,000 mm⁴ (-22%)
Similar weight in L64
L64×38×6.4
- Weight
- 4.8 kg/m (0.0%)
- Depth
- 63.5 mm (+25%)
- Ix
- 246,000 mm⁴ (+70%)
Source: CISC Structural Section Tables SST12.1 · v12.1 · Methodology