Steel Beam Sizes / AISC / HSS Rectangular / HSS 18x10x3/8

HSS 18x10x3/8 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 18x10x3/8 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 68.31 lb/ft 102.00 kg/m
Height 18.00 in 457.00 mm
Width 10.00 in 254.00 mm
Nominal tw 0.375 in 9.530 mm
Design tw 0.349 in 8.860 mm
Area 18.70 in² 12,100.00 mm²
Ix 820.00 in⁴ 341,000,000 mm⁴
Iy 332.00 in⁴ 138,000,000 mm⁴
Sx 91.10 in³ 1,490,000 mm³
Sy 66.40 in³ 1,090,000 mm³
Zx 111.00 in³ 1,820,000 mm³
Zy 74.20 in³ 1,220,000 mm³
rx 6.61 in 168.00 mm
ry 4.21 in 107.00 mm
J 752.00 in⁴ 313,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 18x10x3/8.

Lighter in Rectangular HSS

HSS 10x8x5/8

Weight
67.8 lb/ft (-0.7%)
Depth
10.00 in (-44%)
Ix
253.0 in⁴ (-69%)

Heavier in Rectangular HSS

HSS 12x10x1/2

Weight
69.3 lb/ft (+1.4%)
Depth
12.00 in (-33%)
Ix
395.0 in⁴ (-52%)

Closest Iₓ in Rectangular HSS

HSS 16x8x5/8

Weight
93.3 lb/ft (+37%)
Depth
16.00 in (-11%)
Ix
815.0 in⁴ (-0.6%)
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Source: AISC Shapes Database v16.0 · Methodology