Steel Beam Sizes / AISC / W-Shapes / W18 / W18x65

W18x65 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

W18x65 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 65.00 lb/ft 97.00 kg/m
Depth, d 18.40 in 467.00 mm
Flange width, bf 7.59 in 193.00 mm
tw 0.450 in 11.400 mm
tf 0.750 in 19.100 mm
Area 19.10 in² 12,300.00 mm²
Ix 1,070.00 in⁴ 445,000,000 mm⁴
Iy 54.80 in⁴ 22,800,000 mm⁴
Sx 117.00 in³ 1,920,000 mm³
Sy 14.40 in³ 236,000.00 mm³
Zx 133.00 in³ 2,180,000 mm³
Zy 22.50 in³ 369,000.00 mm³
rx 7.49 in 190.00 mm
ry 1.69 in 42.90 mm
J 2.73 in⁴ 1,140,000 mm⁴
Cw 4,240.00 in⁶ 1,140,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W18x65.

Browse W18 series →

Lighter in W18

W18x60

Weight
60.0 lb/ft (-7.7%)
Depth
18.20 in (-1.1%)
Ix
984.0 in⁴ (-8.0%)

Heavier in W18

W18x71

Weight
71.0 lb/ft (+9.2%)
Depth
18.50 in (+0.5%)
Ix
1,170.0 in⁴ (+9.3%)

Closest Iₓ in W18

W18x55

Weight
55.0 lb/ft (-15%)
Depth
18.10 in (-1.6%)
Ix
890.0 in⁴ (-17%)

Similar weight in W16

W16x67

Weight
67.0 lb/ft (+3.1%)
Depth
16.30 in (-11%)
Ix
954.0 in⁴ (-11%)
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Source: AISC Shapes Database v16.0 · Methodology