Steel Beam Sizes / CISC / HSS Round / HA178×9.5

HA178×9.5 Steel Beam Dimensions and Properties

CISC Round HSS · v12.1

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

Units

Section diagram

HA178×9.5 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 26.60 lb/ft 39.50 kg/m
OD 7.000 in 177.800 mm
Nominal tw 0.375 in 9.530 mm
Design tw 0.338 in 8.580 mm
Area 7.07 in² 4,560.00 mm²
Ix 39.40 in⁴ 16,400,000 mm⁴
Iy 39.40 in⁴ 16,400,000 mm⁴
Sx 11.23 in³ 184,000.00 mm³
Sy 11.23 in³ 184,000.00 mm³
Zx 15.01 in³ 246,000.00 mm³
Zy 15.01 in³ 246,000.00 mm³
rx 2.36 in 59.90 mm
ry 2.36 in 59.90 mm
J 78.56 in⁴ 32,700,000 mm⁴

Alternatives

Useful nearby sections

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

Lighter in Round HSS

HA168×9.5

Weight
37.3 kg/m (-5.6%)
Depth
— mm
Ix
13,800,000 mm⁴ (-16%)

Heavier in Round HSS

HA141×13

Weight
40.3 kg/m (+1.9%)
Depth
— mm
Ix
9,910,000 mm⁴ (-40%)

Closest Iₓ in Round HSS

HA219×4.8

Weight
25.3 kg/m (-36%)
Depth
— mm
Ix
16,700,000 mm⁴ (+1.8%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · ASTM A500 · Availability: Check availability with the supplier. · Methodology