Steel Beam Sizes / AISC / HSS Round / HSS 12.750x0.625

HSS 12.750x0.625 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 12.750x0.625 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 81.01 lb/ft 121.00 kg/m
OD 12.800 in 324.000 mm
Nominal tw 0.625 in 15.900 mm
Design tw 0.581 in 14.800 mm
Area 22.20 in² 14,300.00 mm²
Ix 412.00 in⁴ 171,000,000 mm⁴
Iy 412.00 in⁴ 171,000,000 mm⁴
Sx 64.70 in³ 1,060,000 mm³
Sy 64.70 in³ 1,060,000 mm³
Zx 86.10 in³ 1,410,000 mm³
Zy 86.10 in³ 1,410,000 mm³
rx 4.31 in 109.00 mm
ry 4.31 in 109.00 mm
J 824.00 in⁴ 343,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 12.750x0.625.

Lighter in Round HSS

HSS 24.000x0.313

Weight
79.1 lb/ft (-2.3%)
Depth
— in
Ix
1,520.0 in⁴ (+269%)

Heavier in Round HSS

HSS 16.000x0.500

Weight
82.9 lb/ft (+2.3%)
Depth
— in
Ix
685.0 in⁴ (+66%)

Closest Iₓ in Round HSS

HSS 13.375x0.500

Weight
68.8 lb/ft (-15%)
Depth
— in
Ix
393.0 in⁴ (-4.6%)
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Source: AISC Shapes Database v16.0 · Methodology