Steel Beam Sizes / CISC / HSS Round / HA273×7.9

HA273×7.9 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

HA273×7.9 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 34.90 lb/ft 51.90 kg/m
OD 10.752 in 273.100 mm
Nominal tw 0.313 in 7.940 mm
Design tw 0.281 in 7.150 mm
Area 9.25 in² 5,970.00 mm²
Ix 127.09 in⁴ 52,900,000 mm⁴
Iy 127.09 in⁴ 52,900,000 mm⁴
Sx 23.62 in³ 387,000.00 mm³
Sy 23.62 in³ 387,000.00 mm³
Zx 30.88 in³ 506,000.00 mm³
Zy 30.88 in³ 506,000.00 mm³
rx 3.70 in 94.10 mm
ry 3.70 in 94.10 mm
J 254.67 in⁴ 106,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HA273×7.9.

Lighter in Round HSS

HA178×13

Weight
51.7 kg/m (-0.6%)
Depth
— mm
Ix
20,800,000 mm⁴ (-61%)

Heavier in Round HSS

HA356×6.4

Weight
54.7 kg/m (+5.4%)
Depth
— mm
Ix
96,200,000 mm⁴ (+82%)

Closest Iₓ in Round HSS

HS245×9.5

Weight
55.2 kg/m (+6.3%)
Depth
— mm
Ix
48,600,000 mm⁴ (-8.1%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · ASTM A500 · Methodology