Steel Beam Sizes / AISC / HSS Round / HSS 6.625x0.125

HSS 6.625x0.125 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 6.625x0.125 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 8.69 lb/ft 12.90 kg/m
OD 6.630 in 168.000 mm
Nominal tw 0.125 in 3.180 mm
Design tw 0.116 in 2.950 mm
Area 2.37 in² 1,530.00 mm²
Ix 12.60 in⁴ 5,240,000 mm⁴
Iy 12.60 in⁴ 5,240,000 mm⁴
Sx 3.79 in³ 62,100.00 mm³
Sy 3.79 in³ 62,100.00 mm³
Zx 4.92 in³ 80,600.00 mm³
Zy 4.92 in³ 80,600.00 mm³
rx 2.30 in 58.40 mm
ry 2.30 in 58.40 mm
J 25.10 in⁴ 10,400,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 6.625x0.125.

Lighter in Round HSS

HSS 4.500x0.188

Weight
8.7 lb/ft (-0.2%)
Depth
— in
Ix
5.5 in⁴ (-56%)

Heavier in Round HSS

HSS 4.000x0.220

Weight
8.9 lb/ft (+2.3%)
Depth
— in
Ix
4.4 in⁴ (-65%)

Closest Iₓ in Round HSS

HSS 5.000x0.312

Weight
15.6 lb/ft (+80%)
Depth
— in
Ix
12.0 in⁴ (-4.8%)
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Source: AISC Shapes Database v16.0 · Methodology