Steel Beam Sizes / AISC / HSS Round / HSS 6.625x0.375

HSS 6.625x0.375 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 6.625x0.375 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 25.06 lb/ft 37.30 kg/m
OD 6.630 in 168.000 mm
Nominal tw 0.375 in 9.530 mm
Design tw 0.349 in 8.860 mm
Area 6.88 in² 4,440.00 mm²
Ix 34.00 in⁴ 14,200,000 mm⁴
Iy 34.00 in⁴ 14,200,000 mm⁴
Sx 10.30 in³ 169,000.00 mm³
Sy 10.30 in³ 169,000.00 mm³
Zx 13.80 in³ 226,000.00 mm³
Zy 13.80 in³ 226,000.00 mm³
rx 2.22 in 56.40 mm
ry 2.22 in 56.40 mm
J 68.00 in⁴ 28,300,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 6.625x0.375.

Lighter in Round HSS

HSS 5.000x0.500

Weight
24.1 lb/ft (-4.0%)
Depth
— in
Ix
17.2 in⁴ (-49%)

Heavier in Round HSS

HSS 12.750x0.188

Weight
25.2 lb/ft (+0.5%)
Depth
— in
Ix
136.0 in⁴ (+300%)

Closest Iₓ in Round HSS

HSS 7.000x0.312

Weight
22.3 lb/ft (-11%)
Depth
— in
Ix
34.6 in⁴ (+1.8%)
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Source: AISC Shapes Database v16.0 · Methodology