Steel Beam Sizes / AISC / W-Shapes / W30 / W30x391

W30x391 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

W30x391 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 391.00 lb/ft 582.00 kg/m
Depth, d 33.20 in 843.00 mm
Flange width, bf 15.60 in 396.00 mm
tw 1.360 in 34.500 mm
tf 2.440 in 62.000 mm
Area 115.00 in² 74,200.00 mm²
Ix 20,700.00 in⁴ 8,620,000,000 mm⁴
Iy 1,550.00 in⁴ 645,000,000 mm⁴
Sx 1,250.00 in³ 20,500,000 mm³
Sy 198.00 in³ 3,240,000 mm³
Zx 1,450.00 in³ 23,800,000 mm³
Zy 310.00 in³ 5,080,000 mm³
rx 13.40 in 340.00 mm
ry 3.67 in 93.20 mm
J 173.00 in⁴ 72,000,000 mm⁴
Cw 366,000.00 in⁶ 98,300,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W30x391.

Browse W30 series →

Lighter in W30

W30x357

Weight
357.0 lb/ft (-8.7%)
Depth
32.80 in (-1.2%)
Ix
18,700.0 in⁴ (-9.7%)

Closest Iₓ in W30

W30x326

Weight
326.0 lb/ft (-17%)
Depth
32.40 in (-2.4%)
Ix
16,800.0 in⁴ (-19%)

Similar weight in W33

W33x387

Weight
387.0 lb/ft (-1.0%)
Depth
36.00 in (+8.4%)
Ix
24,300.0 in⁴ (+17%)
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Source: AISC Shapes Database v16.0 · Methodology