Steel Beam Sizes / CISC / HSS Square / HA305×305×7.9

HA305×305×7.9 Steel Beam Dimensions and Properties

CISC Square HSS · v12.1

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

HA305×305×7.9 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 48.90 lb/ft 72.70 kg/m
Height 12.00 in 304.80 mm
Width 12.00 in 304.80 mm
Nominal tw 0.313 in 7.940 mm
Design tw 0.281 in 7.150 mm
Area 12.99 in² 8,380.00 mm²
Ix 295.51 in⁴ 123,000,000 mm⁴
Iy 295.51 in⁴ 123,000,000 mm⁴
Sx 49.19 in³ 806,000.00 mm³
Sy 49.19 in³ 806,000.00 mm³
Zx 56.75 in³ 930,000.00 mm³
Zy 56.75 in³ 930,000.00 mm³
rx 4.76 in 121.00 mm
ry 4.76 in 121.00 mm
J 458.88 in⁴ 191,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HA305×305×7.9.

Lighter in Square HSS

HA254×254×9.5

Weight
71.3 kg/m (-2.0%)
Depth
254.0 mm (-17%)
Ix
81,700,000 mm⁴ (-34%)

Heavier in Square HSS

HA178×178×16

Weight
75.6 kg/m (+3.9%)
Depth
177.8 mm (-42%)
Ix
38,100,000 mm⁴ (-69%)

Closest Iₓ in Square HSS

HA254×254×16

Weight
114.0 kg/m (+56%)
Depth
254.0 mm (-17%)
Ix
124,000,000 mm⁴ (+0.8%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · ASTM A500 · Methodology