Steel Beam Sizes / CISC / HSS Square / HS178×178×7.9

HS178×178×7.9 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

HS178×178×7.9 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 27.60 lb/ft 41.10 kg/m
Height 7.00 in 177.80 mm
Width 7.00 in 177.80 mm
Nominal tw 0.313 in 7.940 mm
Design tw 0.313 in 7.940 mm
Area 8.11 in² 5,230.00 mm²
Ix 59.58 in⁴ 24,800,000 mm⁴
Iy 59.58 in⁴ 24,800,000 mm⁴
Sx 17.03 in³ 279,000.00 mm³
Sy 17.03 in³ 279,000.00 mm³
Zx 20.14 in³ 330,000.00 mm³
Zy 20.14 in³ 330,000.00 mm³
rx 2.71 in 68.80 mm
ry 2.71 in 68.80 mm
J 95.62 in⁴ 39,800,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HS178×178×7.9.

Lighter in Square HSS

HA152×152×9.5

Weight
40.9 kg/m (-0.4%)
Depth
152.4 mm (-14%)
Ix
16,000,000 mm⁴ (-35%)

Heavier in Square HSS

HA127×127×13

Weight
42.3 kg/m (+2.9%)
Depth
127.0 mm (-29%)
Ix
10,600,000 mm⁴ (-57%)

Closest Iₓ in Square HSS

HS203×203×4.8

Weight
29.3 kg/m (-29%)
Depth
203.2 mm (+14%)
Ix
24,300,000 mm⁴ (-2.0%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · CSA G40 · Methodology