Steel Beam Sizes / CISC / HSS Round / HS178×13

HS178×13 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

HS178×13 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 34.70 lb/ft 51.70 kg/m
OD 7.000 in 177.800 mm
Nominal tw 0.500 in 12.700 mm
Design tw 0.500 in 12.700 mm
Area 10.21 in² 6,590.00 mm²
Ix 54.30 in⁴ 22,600,000 mm⁴
Iy 54.30 in⁴ 22,600,000 mm⁴
Sx 15.50 in³ 254,000.00 mm³
Sy 15.50 in³ 254,000.00 mm³
Zx 21.18 in³ 347,000.00 mm³
Zy 21.18 in³ 347,000.00 mm³
rx 2.30 in 58.50 mm
ry 2.30 in 58.50 mm
J 108.59 in⁴ 45,200,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HS178×13.

Lighter in Round HSS

HA324×6.4

Weight
49.7 kg/m (-3.7%)
Depth
— mm
Ix
72,400,000 mm⁴ (+220%)

Heavier in Round HSS

HA273×7.9

Weight
51.9 kg/m (+0.6%)
Depth
— mm
Ix
52,900,000 mm⁴ (+134%)

Closest Iₓ in Round HSS

HA219×6.4

Weight
33.3 kg/m (-35%)
Depth
— mm
Ix
21,800,000 mm⁴ (-3.5%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · CSA G40 · Availability: Check availability with the supplier. · Methodology