Steel Beam Sizes / AISC / Angles / L4x3x3/8
L4x3x3/8 Steel Beam Dimensions and Properties
AISC Angles · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
L4x3x3/8 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 | 8.50 lb/ft | 12.60 kg/m |
| Width | 4.00 in | 102.00 mm |
| Height | 3.00 in | 76.20 mm |
| t | 0.375 in | 9.530 mm |
| Area | 2.49 in² | 1,610.00 mm² |
| Ix | 3.94 in⁴ | 1,640,000 mm⁴ |
| Iy | 1.89 in⁴ | 787,000.00 mm⁴ |
| Sx | 1.44 in³ | 23,600.00 mm³ |
| Sy | 0.85 in³ | 13,900.00 mm³ |
| Zx | 2.60 in³ | 42,600.00 mm³ |
| Zy | 1.52 in³ | 24,900.00 mm³ |
| rx | 1.26 in | 32.00 mm |
| ry | 0.87 in | 22.20 mm |
| J | 0.12 in⁴ | 51,200.00 mm⁴ |
| Cw | 0.11 in⁶ | 30,600,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus L4x3x3/8.
Lighter in L4
L4x4x5/16
- Weight
- 8.2 lb/ft (-3.5%)
- Depth
- 4.00 in (+33%)
- Ix
- 3.7 in⁴ (-6.9%)
Heavier in L4
L4x3-1/2x3/8
- Weight
- 9.1 lb/ft (+7.1%)
- Depth
- 3.50 in (+17%)
- Ix
- 4.2 in⁴ (+5.3%)
Closest Iₓ in L4
L4x4x3/8
- Weight
- 9.8 lb/ft (+15%)
- Depth
- 4.00 in (+33%)
- Ix
- 4.3 in⁴ (+9.6%)
Similar weight in L3
L3-1/2x3-1/2x3/8
- Weight
- 8.5 lb/ft (0.0%)
- Depth
- 3.50 in (+17%)
- Ix
- 2.9 in⁴ (-27%)
Source: AISC Shapes Database v16.0 · Methodology