Steel Beam Sizes / AISC / Angles / L4x3-1/2x1/2
L4x3-1/2x1/2 Steel Beam Dimensions and Properties
AISC Angles · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
L4x3-1/2x1/2 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 | 11.90 lb/ft | 17.60 kg/m |
| Width | 4.00 in | 102.00 mm |
| Height | 3.50 in | 88.90 mm |
| t | 0.500 in | 12.700 mm |
| Area | 3.50 in² | 2,260.00 mm² |
| Ix | 5.30 in⁴ | 2,210,000 mm⁴ |
| Iy | 3.76 in⁴ | 1,570,000 mm⁴ |
| Sx | 1.92 in³ | 31,500.00 mm³ |
| Sy | 1.50 in³ | 24,600.00 mm³ |
| Zx | 3.46 in³ | 56,700.00 mm³ |
| Zy | 2.69 in³ | 44,100.00 mm³ |
| rx | 1.23 in | 31.20 mm |
| ry | 1.04 in | 26.40 mm |
| J | 0.30 in⁴ | 125,000.00 mm⁴ |
| Cw | 0.30 in⁶ | 81,100,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus L4x3-1/2x1/2.
Lighter in L4
L4x4x7/16
- Weight
- 11.3 lb/ft (-5.0%)
- Depth
- 4.00 in (+14%)
- Ix
- 4.9 in⁴ (-7.0%)
Heavier in L4
L4x4x1/2
- Weight
- 12.8 lb/ft (+7.6%)
- Depth
- 4.00 in (+14%)
- Ix
- 5.5 in⁴ (+4.2%)
Closest Iₓ in L4
L4x3x1/2
- Weight
- 11.1 lb/ft (-6.7%)
- Depth
- 3.00 in (-14%)
- Ix
- 5.0 in⁴ (-5.3%)
Similar weight in L5
L5x5x3/8
- Weight
- 12.3 lb/ft (+3.4%)
- Depth
- 5.00 in (+43%)
- Ix
- 8.8 in⁴ (+65%)
Source: AISC Shapes Database v16.0 · Methodology