Steel Beam Sizes / CISC / HSS Round / HA178×13

HA178×13 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

HA178×13 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 0.450 in 11.430 mm
Area 9.25 in² 5,970.00 mm²
Ix 49.97 in⁴ 20,800,000 mm⁴
Iy 49.97 in⁴ 20,800,000 mm⁴
Sx 14.28 in³ 234,000.00 mm³
Sy 14.28 in³ 234,000.00 mm³
Zx 19.34 in³ 317,000.00 mm³
Zy 19.34 in³ 317,000.00 mm³
rx 2.32 in 59.00 mm
ry 2.32 in 59.00 mm
J 99.70 in⁴ 41,500,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HA178×13.

Lighter in Round HSS

HA324×6.4

Weight
49.7 kg/m (-3.7%)
Depth
— mm
Ix
72,400,000 mm⁴ (+248%)

Heavier in Round HSS

HA273×7.9

Weight
51.9 kg/m (+0.6%)
Depth
— mm
Ix
52,900,000 mm⁴ (+154%)

Closest Iₓ in Round HSS

HA219×6.4

Weight
33.3 kg/m (-35%)
Depth
— mm
Ix
21,800,000 mm⁴ (+4.8%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · ASTM A500 · Availability: Check availability with the supplier. · Methodology