Steel Beam Sizes / AISC / HSS Rectangular / HSS 18x6x3/4

HSS 18x6x3/4 Steel Beam Dimensions and Properties

AISC Rectangular HSS · v16.0

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

Units

Section diagram

HSS 18x6x3/4 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 109.91 lb/ft 164.00 kg/m
Height 18.00 in 457.00 mm
Width 6.00 in 152.00 mm
Nominal tw 0.750 in 19.100 mm
Design tw 0.698 in 17.700 mm
Area 30.30 in² 19,500.00 mm²
Ix 1,060.00 in⁴ 441,000,000 mm⁴
Iy 179.00 in⁴ 74,500,000 mm⁴
Sx 118.00 in³ 1,930,000 mm³
Sy 59.60 in³ 977,000.00 mm³
Zx 158.00 in³ 2,590,000 mm³
Zy 70.40 in³ 1,150,000 mm³
rx 5.92 in 150.00 mm
ry 2.43 in 61.70 mm
J 530.00 in⁴ 221,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 18x6x3/4.

Lighter in Rectangular HSS

HSS 24x20x3/8

Weight
109.2 lb/ft (-0.7%)
Depth
24.00 in (+33%)
Ix
2,640.0 in⁴ (+149%)

Heavier in Rectangular HSS

HSS 16x12x5/8

Weight
110.4 lb/ft (+0.4%)
Depth
16.00 in (-11%)
Ix
1,090.0 in⁴ (+2.8%)

Closest Iₓ in Rectangular HSS

HSS 18x10x1/2

Weight
89.7 lb/ft (-18%)
Depth
18.00 in (0.0%)
Ix
1,060.0 in⁴ (0.0%)
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Source: AISC Shapes Database v16.0 · Methodology