Steel Beam Sizes / AISC / W-Shapes / W6 / W6x20

W6x20 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

W6x20 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 20.00 lb/ft 29.80 kg/m
Depth, d 6.20 in 157.00 mm
Flange width, bf 6.02 in 153.00 mm
tw 0.260 in 6.600 mm
tf 0.365 in 9.270 mm
Area 5.87 in² 3,790.00 mm²
Ix 41.40 in⁴ 17,200,000 mm⁴
Iy 13.30 in⁴ 5,540,000 mm⁴
Sx 13.40 in³ 220,000.00 mm³
Sy 4.41 in³ 72,300.00 mm³
Zx 14.90 in³ 246,000.00 mm³
Zy 6.72 in³ 110,000.00 mm³
rx 2.66 in 67.60 mm
ry 1.50 in 38.10 mm
J 0.24 in⁴ 99,900.00 mm⁴
Cw 113.00 in⁶ 30,300,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W6x20.

Browse W6 series →

Lighter in W6

W6x16

Weight
16.0 lb/ft (-20%)
Depth
6.28 in (+1.3%)
Ix
32.1 in⁴ (-22%)

Heavier in W6

W6x25

Weight
25.0 lb/ft (+25%)
Depth
6.38 in (+2.9%)
Ix
53.4 in⁴ (+29%)

Closest Iₓ in W6

W6x15

Weight
15.0 lb/ft (-25%)
Depth
5.99 in (-3.4%)
Ix
29.1 in⁴ (-30%)

Similar weight in W8

W8x21

Weight
21.0 lb/ft (+5.0%)
Depth
8.28 in (+34%)
Ix
75.3 in⁴ (+82%)
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Source: AISC Shapes Database v16.0 · Methodology