Steel Beam Sizes / AISC / HSS Round / HSS 6.625x0.280

HSS 6.625x0.280 Steel Beam Dimensions and Properties

AISC Round HSS · v16.0

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

Units

Section diagram

HSS 6.625x0.280 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 18.99 lb/ft 28.30 kg/m
OD 6.630 in 168.000 mm
Nominal tw 0.280 in 7.110 mm
Design tw 0.260 in 6.600 mm
Area 5.20 in² 3,350.00 mm²
Ix 26.40 in⁴ 11,000,000 mm⁴
Iy 26.40 in⁴ 11,000,000 mm⁴
Sx 7.96 in³ 130,000.00 mm³
Sy 7.96 in³ 130,000.00 mm³
Zx 10.50 in³ 172,000.00 mm³
Zy 10.50 in³ 172,000.00 mm³
rx 2.25 in 57.20 mm
ry 2.25 in 57.20 mm
J 52.70 in⁴ 21,900,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 6.625x0.280.

Lighter in Round HSS

HSS 6.000x0.312

Weight
19.0 lb/ft (-0.1%)
Depth
— in
Ix
21.3 in⁴ (-19%)

Heavier in Round HSS

HSS 7.500x0.250

Weight
19.4 lb/ft (+2.1%)
Depth
— in
Ix
35.2 in⁴ (+33%)

Closest Iₓ in Round HSS

HSS 6.875x0.250

Weight
17.7 lb/ft (-6.7%)
Depth
— in
Ix
26.8 in⁴ (+1.5%)
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Source: AISC Shapes Database v16.0 · Methodology