Steel Beam Sizes / CISC / HSS Round / HA73×6.4

HA73×6.4 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

HA73×6.4 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 7.02 lb/ft 10.40 kg/m
OD 2.874 in 73.000 mm
Nominal tw 0.250 in 6.350 mm
Design tw 0.225 in 5.720 mm
Area 1.88 in² 1,210.00 mm²
Ix 1.66 in⁴ 689,000.00 mm⁴
Iy 1.66 in⁴ 689,000.00 mm⁴
Sx 1.15 in³ 18,900.00 mm³
Sy 1.15 in³ 18,900.00 mm³
Zx 1.59 in³ 26,000.00 mm³
Zy 1.59 in³ 26,000.00 mm³
rx 0.94 in 23.90 mm
ry 0.94 in 23.90 mm
J 3.32 in⁴ 1,380,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HA73×6.4.

Lighter in Round HSS

HA89×4.8

Weight
9.9 kg/m (-5.1%)
Depth
— mm
Ix
1,030,000 mm⁴ (+49%)

Heavier in Round HSS

HA76×6.4

Weight
10.9 kg/m (+4.7%)
Depth
— mm
Ix
792,000 mm⁴ (+15%)

Closest Iₓ in Round HSS

HS76×4.8

Weight
8.4 kg/m (-20%)
Depth
— mm
Ix
687,000 mm⁴ (-0.3%)
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Source: CISC Structural Section Tables SST12.1 · v12.1 · ASTM A500 · Methodology