Steel Beam Sizes / AISC / HSS Square / HSS 9x9x3/8

HSS 9x9x3/8 Steel Beam Dimensions and Properties

AISC Square HSS · v16.0

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

Units

Section diagram

HSS 9x9x3/8 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 42.79 lb/ft 63.60 kg/m
Height 9.00 in 229.00 mm
Width 9.00 in 229.00 mm
Nominal tw 0.375 in 9.530 mm
Design tw 0.349 in 8.860 mm
Area 11.80 in² 7,610.00 mm²
Ix 145.00 in⁴ 60,400,000 mm⁴
Iy 145.00 in⁴ 60,400,000 mm⁴
Sx 32.20 in³ 528,000.00 mm³
Sy 32.20 in³ 528,000.00 mm³
Zx 37.80 in³ 619,000.00 mm³
Zy 37.80 in³ 619,000.00 mm³
rx 3.51 in 89.20 mm
ry 3.51 in 89.20 mm
J 231.00 in⁴ 96,100,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 9x9x3/8.

Lighter in Square HSS

HSS 6x6x5/8

Weight
42.3 lb/ft (-1.1%)
Depth
6.00 in (-33%)
Ix
55.2 in⁴ (-62%)

Heavier in Square HSS

HSS 14x14x1/4

Weight
46.2 lb/ft (+8.1%)
Depth
14.00 in (+56%)
Ix
399.0 in⁴ (+175%)

Closest Iₓ in Square HSS

HSS 8x8x5/8

Weight
59.3 lb/ft (+39%)
Depth
8.00 in (-11%)
Ix
146.0 in⁴ (+0.7%)
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Source: AISC Shapes Database v16.0 · Methodology