Steel Beam Sizes / AISC / HSS Round / HSS 18.000x0.875

HSS 18.000x0.875 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 18.000x0.875 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 160.19 lb/ft 238.00 kg/m
OD 18.000 in 457.000 mm
Nominal tw 0.875 in 22.200 mm
Design tw 0.814 in 20.700 mm
Area 43.90 in² 28,300.00 mm²
Ix 1,630.00 in⁴ 678,000,000 mm⁴
Iy 1,630.00 in⁴ 678,000,000 mm⁴
Sx 181.00 in³ 2,970,000 mm³
Sy 181.00 in³ 2,970,000 mm³
Zx 241.00 in³ 3,950,000 mm³
Zy 241.00 in³ 3,950,000 mm³
rx 6.08 in 154.00 mm
ry 6.08 in 154.00 mm
J 3,250.00 in⁴ 1,350,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 18.000x0.875.

Lighter in Round HSS

HSS 24.000x0.625

Weight
156.2 lb/ft (-2.5%)
Depth
— in
Ix
2,930.0 in⁴ (+80%)

Heavier in Round HSS

HSS 16.000x1.000

Weight
160.4 lb/ft (+0.1%)
Depth
— in
Ix
1,250.0 in⁴ (-23%)

Closest Iₓ in Round HSS

HSS 20.000x0.625

Weight
129.5 lb/ft (-19%)
Depth
— in
Ix
1,670.0 in⁴ (+2.5%)
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Source: AISC Shapes Database v16.0 · Methodology