Steel Beam Sizes / AISC / HSS Round / HSS 6.625x0.312

HSS 6.625x0.312 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 6.625x0.312 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 21.06 lb/ft 31.30 kg/m
OD 6.630 in 168.000 mm
Nominal tw 0.312 in 7.940 mm
Design tw 0.291 in 7.390 mm
Area 5.79 in² 3,740.00 mm²
Ix 29.10 in⁴ 12,100,000 mm⁴
Iy 29.10 in⁴ 12,100,000 mm⁴
Sx 8.79 in³ 144,000.00 mm³
Sy 8.79 in³ 144,000.00 mm³
Zx 11.70 in³ 192,000.00 mm³
Zy 11.70 in³ 192,000.00 mm³
rx 2.24 in 56.90 mm
ry 2.24 in 56.90 mm
J 58.20 in⁴ 24,200,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 6.625x0.312.

Lighter in Round HSS

HSS 5.563x0.375

Weight
20.8 lb/ft (-1.2%)
Depth
— in
Ix
19.5 in⁴ (-33%)

Heavier in Round HSS

HSS 10.750x0.188

Weight
21.2 lb/ft (+0.5%)
Depth
— in
Ix
81.0 in⁴ (+178%)

Closest Iₓ in Round HSS

HSS 7.000x0.250

Weight
18.0 lb/ft (-14%)
Depth
— in
Ix
28.4 in⁴ (-2.4%)
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Source: AISC Shapes Database v16.0 · Methodology