Steel Beam Sizes / AISC / W-Shapes / W18 / W18x46

W18x46 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

W18x46 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 46.00 lb/ft 68.00 kg/m
Depth, d 18.10 in 460.00 mm
Flange width, bf 6.06 in 154.00 mm
tw 0.360 in 9.140 mm
tf 0.605 in 15.400 mm
Area 13.50 in² 8,710.00 mm²
Ix 712.00 in⁴ 296,000,000 mm⁴
Iy 22.50 in⁴ 9,370,000 mm⁴
Sx 78.80 in³ 1,290,000 mm³
Sy 7.43 in³ 122,000.00 mm³
Zx 90.70 in³ 1,490,000 mm³
Zy 11.70 in³ 192,000.00 mm³
rx 7.25 in 184.00 mm
ry 1.29 in 32.80 mm
J 1.22 in⁴ 508,000.00 mm⁴
Cw 1,720.00 in⁶ 462,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W18x46.

Browse W18 series →

Lighter in W18

W18x40

Weight
40.0 lb/ft (-13%)
Depth
17.90 in (-1.1%)
Ix
612.0 in⁴ (-14%)

Heavier in W18

W18x50

Weight
50.0 lb/ft (+8.7%)
Depth
18.00 in (-0.6%)
Ix
800.0 in⁴ (+12%)

Closest Iₓ in W18

W18x55

Weight
55.0 lb/ft (+20%)
Depth
18.10 in (0.0%)
Ix
890.0 in⁴ (+25%)

Similar weight in W16

W16x45

Weight
45.0 lb/ft (-2.2%)
Depth
16.10 in (-11%)
Ix
586.0 in⁴ (-18%)
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Source: AISC Shapes Database v16.0 · Methodology