Steel Beam Sizes / AISC / W-Shapes / W18 / W18x86
W18x86 Dimensions, Weight and Section Properties
AISC Wide flange · v16.0
W18x86: 18.4 in depth, 11.1 in flange width, 86 lb/ft weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
W18x86 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 | 86.00 lb/ft | 128.00 kg/m |
| Depth, d | 18.40 in | 467.00 mm |
| Flange width, bf | 11.10 in | 282.00 mm |
| tw | 0.480 in | 12.200 mm |
| tf | 0.770 in | 19.600 mm |
| Area | 25.30 in² | 16,300.00 mm² |
| Ix | 1,530.00 in⁴ | 637,000,000 mm⁴ |
| Iy | 175.00 in⁴ | 72,800,000 mm⁴ |
| Sx | 166.00 in³ | 2,720,000 mm³ |
| Sy | 31.60 in³ | 518,000.00 mm³ |
| Zx | 186.00 in³ | 3,050,000 mm³ |
| Zy | 48.40 in³ | 793,000.00 mm³ |
| rx | 7.77 in | 197.00 mm |
| ry | 2.63 in | 66.80 mm |
| J | 4.10 in⁴ | 1,710,000 mm⁴ |
| Cw | 13,600.00 in⁶ | 3,650,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus W18x86.
Lighter in W18
W18x76
- Weight
- 76.0 lb/ft (-12%)
- Depth
- 18.20 in (-1.1%)
- Ix
- 1,330.0 in⁴ (-13%)
Heavier in W18
W18x97
- Weight
- 97.0 lb/ft (+13%)
- Depth
- 18.60 in (+1.1%)
- Ix
- 1,750.0 in⁴ (+14%)
Another Iₓ option in W18
W18x71
- Weight
- 71.0 lb/ft (-17%)
- Depth
- 18.50 in (+0.5%)
- Ix
- 1,170.0 in⁴ (-24%)
Similar weight in W21
W21x83
- Weight
- 83.0 lb/ft (-3.5%)
- Depth
- 21.40 in (+16%)
- Ix
- 1,830.0 in⁴ (+20%)
Source: AISC Shapes Database v16.0 · Methodology