Steel Beam Sizes / AISC / HSS Rectangular / HSS 18x6x5/8

HSS 18x6x5/8 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 18x6x5/8 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 93.34 lb/ft 139.00 kg/m
Height 18.00 in 457.00 mm
Width 6.00 in 152.00 mm
Nominal tw 0.625 in 15.900 mm
Design tw 0.581 in 14.800 mm
Area 25.70 in² 16,600.00 mm²
Ix 923.00 in⁴ 384,000,000 mm⁴
Iy 158.00 in⁴ 65,800,000 mm⁴
Sx 103.00 in³ 1,690,000 mm³
Sy 52.70 in³ 864,000.00 mm³
Zx 135.00 in³ 2,210,000 mm³
Zy 61.00 in³ 1,000,000 mm³
rx 6.00 in 152.00 mm
ry 2.48 in 63.00 mm
J 462.00 in⁴ 192,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 18x6x5/8.

Lighter in Rectangular HSS

HSS 24x20x5/16

Weight
91.4 lb/ft (-2.1%)
Depth
24.00 in (+33%)
Ix
2,230.0 in⁴ (+142%)

Heavier in Rectangular HSS

HSS 22x16x3/8

Weight
93.8 lb/ft (+0.5%)
Depth
22.00 in (+22%)
Ix
1,830.0 in⁴ (+98%)

Closest Iₓ in Rectangular HSS

HSS 22x10x1/4

Weight
53.1 lb/ft (-43%)
Depth
22.00 in (+22%)
Ix
923.0 in⁴ (0.0%)
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Source: AISC Shapes Database v16.0 · Methodology