Steel Beam Sizes / AISC / W-Shapes / W18 / W18x175

W18x175 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

W18x175 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 175.00 lb/ft 260.00 kg/m
Depth, d 20.00 in 508.00 mm
Flange width, bf 11.40 in 290.00 mm
tw 0.890 in 22.600 mm
tf 1.590 in 40.400 mm
Area 51.40 in² 33,200.00 mm²
Ix 3,450.00 in⁴ 1,440,000,000 mm⁴
Iy 391.00 in⁴ 163,000,000 mm⁴
Sx 344.00 in³ 5,640,000 mm³
Sy 68.80 in³ 1,130,000 mm³
Zx 398.00 in³ 6,520,000 mm³
Zy 106.00 in³ 1,740,000 mm³
rx 8.20 in 208.00 mm
ry 2.76 in 70.10 mm
J 33.80 in⁴ 14,100,000 mm⁴
Cw 33,300.00 in⁶ 8,940,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W18x175.

Browse W18 series →

Lighter in W18

W18x158

Weight
158.0 lb/ft (-9.7%)
Depth
19.70 in (-1.5%)
Ix
3,060.0 in⁴ (-11%)

Heavier in W18

W18x192

Weight
192.0 lb/ft (+9.7%)
Depth
20.40 in (+2.0%)
Ix
3,870.0 in⁴ (+12%)

Closest Iₓ in W18

W18x143

Weight
143.0 lb/ft (-18%)
Depth
19.50 in (-2.5%)
Ix
2,750.0 in⁴ (-20%)

Similar weight in W21

W21x182

Weight
182.0 lb/ft (+4.0%)
Depth
22.70 in (+14%)
Ix
4,730.0 in⁴ (+37%)
Analyze in Beam Calculator Compare in W-Shapes finder

Source: AISC Shapes Database v16.0 · Methodology