Steel Beam Sizes / AISC / WT Tees / WT18x401
WT18x401 Dimensions, Weight and Section Properties
AISC Structural tees · v16.0
WT18x401: 21.3 in depth, 18 in flange width, 401 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
WT18x401 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 | 401.00 lb/ft | 597.00 kg/m |
| Depth, d | 21.30 in | 541.00 mm |
| Flange width, bf | 18.00 in | 457.00 mm |
| tw | 2.380 in | 60.500 mm |
| tf | 4.290 in | 109.000 mm |
| Area | 118.00 in² | 76,100.00 mm² |
| Ix | 4,110.00 in⁴ | 1,710,000,000 mm⁴ |
| Iy | 2,100.00 in⁴ | 874,000,000 mm⁴ |
| Sx | 265.00 in³ | 4,340,000 mm³ |
| Sy | 233.00 in³ | 3,820,000 mm³ |
| Zx | 491.00 in³ | 8,050,000 mm³ |
| Zy | 372.00 in³ | 6,100,000 mm³ |
| rx | 5.90 in | 150.00 mm |
| ry | 4.22 in | 107.00 mm |
| J | 519.00 in⁴ | 216,000,000 mm⁴ |
| Cw | 5,830.00 in⁶ | 1,570,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus WT18x401.
Lighter in WT18
WT18x361.5
- Weight
- 361.5 lb/ft (-9.9%)
- Depth
- 20.90 in (-1.9%)
- Ix
- 3,610.0 in⁴ (-12%)
Heavier in WT18
WT18x426.5
- Weight
- 426.5 lb/ft (+6.4%)
- Depth
- 21.60 in (+1.4%)
- Ix
- 4,480.0 in⁴ (+9.0%)
Another Iₓ option in WT18
WT18x326
- Weight
- 326.0 lb/ft (-19%)
- Depth
- 20.50 in (-3.8%)
- Ix
- 3,160.0 in⁴ (-23%)
Similar weight in WT20
WT20x327.5
- Weight
- 327.5 lb/ft (-18%)
- Depth
- 21.80 in (+2.3%)
- Ix
- 3,730.0 in⁴ (-9.2%)
Source: AISC Shapes Database v16.0 · Methodology