Steel Beam Sizes / AISC / Channels / C9x20

C9x20 Steel Beam Dimensions and Properties

AISC Channels · v16.0

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

Units

Section diagram

C9x20 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 30.00 kg/m
Depth, d 9.00 in 229.00 mm
Flange width, bf 2.65 in 67.30 mm
tw 0.448 in 11.400 mm
tf 0.413 in 10.500 mm
Area 5.87 in² 3,790.00 mm²
Ix 60.90 in⁴ 25,300,000 mm⁴
Iy 2.41 in⁴ 1,000,000 mm⁴
Sx 13.50 in³ 221,000.00 mm³
Sy 1.17 in³ 19,200.00 mm³
Zx 16.90 in³ 277,000.00 mm³
Zy 2.46 in³ 40,300.00 mm³
rx 3.22 in 81.80 mm
ry 0.64 in 16.30 mm
J 0.43 in⁴ 178,000.00 mm⁴
Cw 39.40 in⁶ 10,600,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus C9x20.

Lighter in C9

C9x15

Weight
15.0 lb/ft (-25%)
Depth
9.00 in (0.0%)
Ix
51.0 in⁴ (-16%)

Closest Iₓ in C9

C9x13.4

Weight
13.4 lb/ft (-33%)
Depth
9.00 in (0.0%)
Ix
47.8 in⁴ (-22%)

Similar weight in C10

C10x20

Weight
20.0 lb/ft (0.0%)
Depth
10.00 in (+11%)
Ix
78.9 in⁴ (+30%)
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Source: AISC Shapes Database v16.0 · Methodology