Steel Beam Sizes / AISC / HSS Rectangular / HSS 8x4x3/8

HSS 8x4x3/8 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 8x4x3/8 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 27.48 lb/ft 40.80 kg/m
Height 8.00 in 203.00 mm
Width 4.00 in 102.00 mm
Nominal tw 0.375 in 9.530 mm
Design tw 0.349 in 8.860 mm
Area 7.58 in² 4,890.00 mm²
Ix 58.70 in⁴ 24,400,000 mm⁴
Iy 19.60 in⁴ 8,160,000 mm⁴
Sx 14.70 in³ 241,000.00 mm³
Sy 9.80 in³ 161,000.00 mm³
Zx 18.80 in³ 308,000.00 mm³
Zy 11.50 in³ 188,000.00 mm³
rx 2.78 in 70.60 mm
ry 1.61 in 40.90 mm
J 49.30 in⁴ 20,500,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 8x4x3/8.

Lighter in Rectangular HSS

HSS 12x10x3/16

Weight
27.3 lb/ft (-0.7%)
Depth
12.00 in (+50%)
Ix
165.0 in⁴ (+181%)

Heavier in Rectangular HSS

HSS 10x4x5/16

Weight
27.6 lb/ft (+0.4%)
Depth
10.00 in (+25%)
Ix
90.1 in⁴ (+53%)

Closest Iₓ in Rectangular HSS

HSS 8x3x1/2

Weight
31.8 lb/ft (+16%)
Depth
8.00 in (0.0%)
Ix
58.6 in⁴ (-0.2%)
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Source: AISC Shapes Database v16.0 · Methodology