Steel Beam Sizes / AISC / HSS Round / HSS 12.750x0.375

HSS 12.750x0.375 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 12.750x0.375 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 49.61 lb/ft 73.80 kg/m
OD 12.800 in 324.000 mm
Nominal tw 0.375 in 9.530 mm
Design tw 0.349 in 8.860 mm
Area 13.60 in² 8,770.00 mm²
Ix 262.00 in⁴ 109,000,000 mm⁴
Iy 262.00 in⁴ 109,000,000 mm⁴
Sx 41.00 in³ 672,000.00 mm³
Sy 41.00 in³ 672,000.00 mm³
Zx 53.70 in³ 880,000.00 mm³
Zy 53.70 in³ 880,000.00 mm³
rx 4.39 in 112.00 mm
ry 4.39 in 112.00 mm
J 523.00 in⁴ 218,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 12.750x0.375.

Lighter in Round HSS

HSS 9.625x0.500

Weight
48.8 lb/ft (-1.7%)
Depth
— in
Ix
141.0 in⁴ (-46%)

Heavier in Round HSS

HSS 10.000x0.500

Weight
50.8 lb/ft (+2.4%)
Depth
— in
Ix
159.0 in⁴ (-39%)

Closest Iₓ in Round HSS

HSS 11.750x0.500

Weight
60.1 lb/ft (+21%)
Depth
— in
Ix
263.0 in⁴ (+0.4%)
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Source: AISC Shapes Database v16.0 · Methodology