Steel Beam Sizes / CISC / HSS Round / HS273×7.9

HS273×7.9 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

HS273×7.9 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 0.313 in 7.940 mm
Area 10.25 in² 6,610.00 mm²
Ix 139.83 in⁴ 58,200,000 mm⁴
Iy 139.83 in⁴ 58,200,000 mm⁴
Sx 26.00 in³ 426,000.00 mm³
Sy 26.00 in³ 426,000.00 mm³
Zx 34.05 in³ 558,000.00 mm³
Zy 34.05 in³ 558,000.00 mm³
rx 3.69 in 93.80 mm
ry 3.69 in 93.80 mm
J 278.69 in⁴ 116,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HS273×7.9.

Lighter in Round HSS

HA178×13

Weight
51.7 kg/m (-0.6%)
Depth
— mm
Ix
20,800,000 mm⁴ (-64%)

Heavier in Round HSS

HA356×6.4

Weight
54.7 kg/m (+5.4%)
Depth
— mm
Ix
96,200,000 mm⁴ (+65%)

Closest Iₓ in Round HSS

HA273×9.5

Weight
61.9 kg/m (+19%)
Depth
— mm
Ix
62,400,000 mm⁴ (+7.2%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · CSA G40 · Methodology