Steel Beam Sizes / AISC / W-Shapes / W18 / W18x143

W18x143 Steel Beam Dimensions and Properties

AISC Wide flange · v16.0

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

Units

Section diagram

W18x143 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 143.00 lb/ft 213.00 kg/m
Depth, d 19.50 in 495.00 mm
Flange width, bf 11.20 in 284.00 mm
tw 0.730 in 18.500 mm
tf 1.320 in 33.500 mm
Area 42.00 in² 27,100.00 mm²
Ix 2,750.00 in⁴ 1,140,000,000 mm⁴
Iy 311.00 in⁴ 129,000,000 mm⁴
Sx 282.00 in³ 4,620,000 mm³
Sy 55.50 in³ 909,000.00 mm³
Zx 322.00 in³ 5,280,000 mm³
Zy 85.40 in³ 1,400,000 mm³
rx 8.09 in 205.00 mm
ry 2.72 in 69.10 mm
J 19.20 in⁴ 7,990,000 mm⁴
Cw 25,700.00 in⁶ 6,900,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W18x143.

Browse W18 series →

Lighter in W18

W18x130

Weight
130.0 lb/ft (-9.1%)
Depth
19.30 in (-1.0%)
Ix
2,460.0 in⁴ (-11%)

Heavier in W18

W18x158

Weight
158.0 lb/ft (+10%)
Depth
19.70 in (+1.0%)
Ix
3,060.0 in⁴ (+11%)

Closest Iₓ in W18

W18x119

Weight
119.0 lb/ft (-17%)
Depth
19.00 in (-2.6%)
Ix
2,190.0 in⁴ (-20%)

Similar weight in W21

W21x147

Weight
147.0 lb/ft (+2.8%)
Depth
22.10 in (+13%)
Ix
3,630.0 in⁴ (+32%)
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Source: AISC Shapes Database v16.0 · Methodology