Steel Beam Sizes / CISC / HSS Round / HA73×3.2

HA73×3.2 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

HA73×3.2 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 3.68 lb/ft 5.48 kg/m
OD 2.874 in 73.000 mm
Nominal tw 0.125 in 3.180 mm
Design tw 0.113 in 2.860 mm
Area 0.98 in² 630.00 mm²
Ix 0.93 in⁴ 388,000.00 mm⁴
Iy 0.93 in⁴ 388,000.00 mm⁴
Sx 0.65 in³ 10,600.00 mm³
Sy 0.65 in³ 10,600.00 mm³
Zx 0.86 in³ 14,100.00 mm³
Zy 0.86 in³ 14,100.00 mm³
rx 0.98 in 24.80 mm
ry 0.98 in 24.80 mm
J 1.86 in⁴ 776,000.00 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HA73×3.2.

Lighter in Round HSS

HA48×4.8

Weight
5.1 kg/m (-6.5%)
Depth
— mm
Ix
145,000 mm⁴ (-63%)

Heavier in Round HSS

HA76×3.2

Weight
5.7 kg/m (+4.3%)
Depth
— mm
Ix
444,000 mm⁴ (+14%)

Closest Iₓ in Round HSS

HS64×4.8

Weight
6.9 kg/m (+26%)
Depth
— mm
Ix
383,000 mm⁴ (-1.3%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · ASTM A500 · Methodology