Steel Beam Sizes / AISC / W-Shapes / W16 / W16x40

W16x40 Steel Beam Dimensions and Properties

AISC Wide flange · v16.0

Analyze in Beam Calculator Back to W-Shapes All W16

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

Units

Section diagram

W16x40 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 40.00 lb/ft 60.00 kg/m
Depth, d 16.00 in 406.00 mm
Flange width, bf 7.00 in 178.00 mm
tw 0.305 in 7.750 mm
tf 0.505 in 12.800 mm
Area 11.80 in² 7,610.00 mm²
Ix 518.00 in⁴ 216,000,000 mm⁴
Iy 28.90 in⁴ 12,000,000 mm⁴
Sx 64.70 in³ 1,060,000 mm³
Sy 8.25 in³ 135,000.00 mm³
Zx 73.00 in³ 1,200,000 mm³
Zy 12.70 in³ 208,000.00 mm³
rx 6.63 in 168.00 mm
ry 1.57 in 39.90 mm
J 0.79 in⁴ 330,000.00 mm⁴
Cw 1,730.00 in⁶ 465,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W16x40.

Browse W16 series →

Lighter in W16

W16x36

Weight
36.0 lb/ft (-10%)
Depth
15.90 in (-0.6%)
Ix
448.0 in⁴ (-14%)

Heavier in W16

W16x45

Weight
45.0 lb/ft (+13%)
Depth
16.10 in (+0.6%)
Ix
586.0 in⁴ (+13%)

Closest Iₓ in W16

W16x50

Weight
50.0 lb/ft (+25%)
Depth
16.30 in (+1.9%)
Ix
659.0 in⁴ (+27%)

Similar weight in W18

W18x40

Weight
40.0 lb/ft (0.0%)
Depth
17.90 in (+12%)
Ix
612.0 in⁴ (+18%)
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Source: AISC Shapes Database v16.0 · Methodology