Steel Beam Sizes / AISC / HSS Round / HSS 18.000x0.750

HSS 18.000x0.750 Dimensions, Weight and Section Properties

AISC Round HSS · v16.0

HSS 18.000x0.750: 138.3 lb/ft weight. View the full dimensions and properties in imperial and metric units below.

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

HSS 18.000x0.750 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 138.30 lb/ft 206.00 kg/m
OD 18.000 in 457.000 mm
Nominal tw 0.750 in 19.100 mm
Design tw 0.698 in 17.700 mm
Area 37.90 in² 24,500.00 mm²
Ix 1,420.00 in⁴ 591,000,000 mm⁴
Iy 1,420.00 in⁴ 591,000,000 mm⁴
Sx 158.00 in³ 2,590,000 mm³
Sy 158.00 in³ 2,590,000 mm³
Zx 209.00 in³ 3,420,000 mm³
Zy 209.00 in³ 3,420,000 mm³
rx 6.12 in 155.00 mm
ry 6.12 in 155.00 mm
J 2,840.00 in⁴ 1,180,000,000 mm⁴

Alternatives

Useful nearby sections

Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus HSS 18.000x0.750.

Lighter in Round HSS

HSS 26.000x0.500

Weight
136.3 lb/ft (-1.4%)
Depth
— in
Ix
3,040.0 in⁴ (+114%)

Heavier in Round HSS

HSS 14.000x1.000

Weight
139.0 lb/ft (+0.5%)
Depth
— in
Ix
820.0 in⁴ (-42%)

Another Iₓ option in Round HSS

HSS 22.000x0.375

Weight
86.7 lb/ft (-37%)
Depth
— in
Ix
1,390.0 in⁴ (-2.1%)
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Source: AISC Shapes Database v16.0 · Methodology