Steel Beam Sizes / AISC / W-Shapes / W40 / W40x397

W40x397 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

W40x397 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 397.00 lb/ft 591.00 kg/m
Depth, d 41.00 in 1,040.00 mm
Flange width, bf 16.10 in 409.00 mm
tw 1.220 in 31.000 mm
tf 2.200 in 55.900 mm
Area 117.00 in² 75,500.00 mm²
Ix 32,000.00 in⁴ 13,300,000,000 mm⁴
Iy 1,540.00 in⁴ 641,000,000 mm⁴
Sx 1,560.00 in³ 25,600,000 mm³
Sy 191.00 in³ 3,130,000 mm³
Zx 1,800.00 in³ 29,500,000 mm³
Zy 300.00 in³ 4,920,000 mm³
rx 16.60 in 422.00 mm
ry 3.64 in 92.50 mm
J 142.00 in⁴ 59,100,000 mm⁴
Cw 579,000.00 in⁶ 155,000,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W40x397.

Browse W40 series →

Lighter in W40

W40x392

Weight
392.0 lb/ft (-1.3%)
Depth
41.60 in (+1.5%)
Ix
29,900.0 in⁴ (-6.6%)

Heavier in W40

W40x431

Weight
431.0 lb/ft (+8.6%)
Depth
41.30 in (+0.7%)
Ix
34,800.0 in⁴ (+8.8%)

Closest Iₓ in W40

W40x372

Weight
372.0 lb/ft (-6.3%)
Depth
40.60 in (-1.0%)
Ix
29,600.0 in⁴ (-7.5%)

Similar weight in W36

W36x395

Weight
395.0 lb/ft (-0.5%)
Depth
38.40 in (-6.3%)
Ix
28,500.0 in⁴ (-11%)
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Source: AISC Shapes Database v16.0 · Methodology