Steel Beam Sizes / AISC / HSS Round / HSS 12.750x0.188

HSS 12.750x0.188 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 12.750x0.188 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 25.18 lb/ft 37.50 kg/m
OD 12.800 in 324.000 mm
Nominal tw 0.188 in 4.780 mm
Design tw 0.174 in 4.420 mm
Area 6.89 in² 4,450.00 mm²
Ix 136.00 in⁴ 56,600,000 mm⁴
Iy 136.00 in⁴ 56,600,000 mm⁴
Sx 21.40 in³ 351,000.00 mm³
Sy 21.40 in³ 351,000.00 mm³
Zx 27.60 in³ 452,000.00 mm³
Zy 27.60 in³ 452,000.00 mm³
rx 4.45 in 113.00 mm
ry 4.45 in 113.00 mm
J 272.00 in⁴ 113,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 12.750x0.188.

Lighter in Round HSS

HSS 6.625x0.375

Weight
25.1 lb/ft (-0.5%)
Depth
— in
Ix
34.0 in⁴ (-75%)

Heavier in Round HSS

HSS 10.000x0.250

Weight
26.1 lb/ft (+3.5%)
Depth
— in
Ix
85.3 in⁴ (-37%)

Closest Iₓ in Round HSS

HSS 11.750x0.250

Weight
30.7 lb/ft (+22%)
Depth
— in
Ix
140.0 in⁴ (+2.9%)
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Source: AISC Shapes Database v16.0 · Methodology