Steel Beam Sizes / AISC / Double Angles / 2L4x3-1/2x1/2x3/4SLBB
2L4x3-1/2x1/2x3/4SLBB Steel Beam Dimensions and Properties
AISC Double angles · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
2L4x3-1/2x1/2x3/4SLBB 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 | 23.80 lb/ft | 35.20 kg/m |
| Width | 4.00 in | 102.00 mm |
| Height | 3.50 in | 88.90 mm |
| t | 0.500 in | 12.700 mm |
| Area | 7.00 in² | 4,520.00 mm² |
| Ix | 7.53 in⁴ | 3,130,000 mm⁴ |
| Sx | 3.00 in³ | 49,200.00 mm³ |
| rx | 1.04 in | 26.40 mm |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 2L4x3-1/2x1/2x3/4SLBB.
Lighter in Double angles
2L6x3-1/2x3/8LLBB
- Weight
- 23.4 lb/ft (-1.7%)
- Depth
- 6.00 in (+71%)
- Ix
- 25.8 in⁴ (+243%)
Heavier in Double angles
2L5x5x3/8
- Weight
- 24.6 lb/ft (+3.4%)
- Depth
- 5.00 in (+43%)
- Ix
- 17.5 in⁴ (+132%)
Closest Iₓ in Double angles
2L4x3-1/2x1/2SLBB
- Weight
- 23.8 lb/ft (0.0%)
- Depth
- 3.50 in (0.0%)
- Ix
- 7.5 in⁴ (0.0%)
Source: AISC Shapes Database v16.0 · Methodology