Steel Beam Sizes / AISC / HSS Round / HSS 13.375x0.313

HSS 13.375x0.313 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 13.375x0.313 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 43.64 lb/ft 64.90 kg/m
OD 13.400 in 340.000 mm
Nominal tw 0.313 in 7.950 mm
Design tw 0.291 in 7.390 mm
Area 11.90 in² 7,680.00 mm²
Ix 256.00 in⁴ 107,000,000 mm⁴
Iy 256.00 in⁴ 107,000,000 mm⁴
Sx 38.20 in³ 626,000.00 mm³
Sy 38.20 in³ 626,000.00 mm³
Zx 49.80 in³ 816,000.00 mm³
Zy 49.80 in³ 816,000.00 mm³
rx 4.63 in 118.00 mm
ry 4.63 in 118.00 mm
J 512.00 in⁴ 213,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 13.375x0.313.

Lighter in Round HSS

HSS 8.625x0.500

Weight
43.4 lb/ft (-0.5%)
Depth
— in
Ix
100.0 in⁴ (-61%)

Heavier in Round HSS

HSS 11.750x0.375

Weight
45.6 lb/ft (+4.5%)
Depth
— in
Ix
203.0 in⁴ (-21%)

Closest Iₓ in Round HSS

HSS 12.750x0.375

Weight
49.6 lb/ft (+14%)
Depth
— in
Ix
262.0 in⁴ (+2.3%)
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Source: AISC Shapes Database v16.0 · Methodology