Steel Beam Sizes / AISC / W-Shapes / W18 / W18x86

W18x86 Steel Beam Dimensions and Properties

AISC Wide flange · v16.0

Analyze in Beam Calculator Back to W-Shapes All W18

Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

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

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W18x86.

Browse W18 series →

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%)

Closest Iₓ 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%)
Analyze in Beam Calculator Compare in W-Shapes finder

Source: AISC Shapes Database v16.0 · Methodology