Steel Beam Sizes / AISC / HSS Rectangular / HSS 18x10x5/8

HSS 18x10x5/8 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 18x10x5/8 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 110.36 lb/ft 164.00 kg/m
Height 18.00 in 457.00 mm
Width 10.00 in 254.00 mm
Nominal tw 0.625 in 15.900 mm
Design tw 0.581 in 14.800 mm
Area 30.30 in² 19,500.00 mm²
Ix 1,280.00 in⁴ 533,000,000 mm⁴
Iy 511.00 in⁴ 213,000,000 mm⁴
Sx 142.00 in³ 2,330,000 mm³
Sy 102.00 in³ 1,670,000 mm³
Zx 176.00 in³ 2,880,000 mm³
Zy 117.00 in³ 1,920,000 mm³
rx 6.49 in 165.00 mm
ry 4.10 in 104.00 mm
J 1,190.00 in⁴ 495,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 18x10x5/8.

Lighter in Rectangular HSS

HSS 14x10x3/4

Weight
109.9 lb/ft (-0.4%)
Depth
14.00 in (-22%)
Ix
792.0 in⁴ (-38%)

Heavier in Rectangular HSS

HSS 20x16x1/2

Weight
116.9 lb/ft (+5.9%)
Depth
20.00 in (+11%)
Ix
1,900.0 in⁴ (+48%)

Closest Iₓ in Rectangular HSS

HSS 24x12x1/4

Weight
59.9 lb/ft (-46%)
Depth
24.00 in (+33%)
Ix
1,280.0 in⁴ (0.0%)
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Source: AISC Shapes Database v16.0 · Methodology