Steel Beam Sizes / CISC / HSS Square / HA178×178×9.5

HA178×178×9.5 Steel Beam Dimensions and Properties

CISC Square HSS · v12.1

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

Units

Section diagram

HA178×178×9.5 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 32.60 lb/ft 48.50 kg/m
Height 7.00 in 177.80 mm
Width 7.00 in 177.80 mm
Nominal tw 0.375 in 9.530 mm
Design tw 0.338 in 8.580 mm
Area 8.71 in² 5,620.00 mm²
Ix 63.19 in⁴ 26,300,000 mm⁴
Iy 63.19 in⁴ 26,300,000 mm⁴
Sx 18.06 in³ 296,000.00 mm³
Sy 18.06 in³ 296,000.00 mm³
Zx 21.48 in³ 352,000.00 mm³
Zy 21.48 in³ 352,000.00 mm³
rx 2.70 in 68.50 mm
ry 2.70 in 68.50 mm
J 102.35 in⁴ 42,600,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HA178×178×9.5.

Lighter in Square HSS

HA203×203×7.9

Weight
47.4 kg/m (-2.1%)
Depth
203.2 mm (+14%)
Ix
34,600,000 mm⁴ (+32%)

Heavier in Square HSS

HA152×152×13

Weight
52.4 kg/m (+8.0%)
Depth
152.4 mm (-14%)
Ix
19,600,000 mm⁴ (-25%)

Closest Iₓ in Square HSS

HS178×178×7.9

Weight
41.1 kg/m (-15%)
Depth
177.8 mm (0.0%)
Ix
24,800,000 mm⁴ (-5.7%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · ASTM A500 · Methodology