Steel Beam Sizes / AISC / HSS Rectangular / HSS 12x8x3/8

HSS 12x8x3/8 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 12x8x3/8 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 47.90 lb/ft 71.20 kg/m
Height 12.00 in 305.00 mm
Width 8.00 in 203.00 mm
Nominal tw 0.375 in 9.530 mm
Design tw 0.349 in 8.860 mm
Area 13.20 in² 8,520.00 mm²
Ix 262.00 in⁴ 109,000,000 mm⁴
Iy 140.00 in⁴ 58,300,000 mm⁴
Sx 43.70 in³ 716,000.00 mm³
Sy 35.10 in³ 575,000.00 mm³
Zx 53.00 in³ 869,000.00 mm³
Zy 40.10 in³ 657,000.00 mm³
rx 4.47 in 114.00 mm
ry 3.27 in 83.10 mm
J 293.00 in⁴ 122,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 12x8x3/8.

Lighter in Rectangular HSS

HSS 18x10x1/4

Weight
46.2 lb/ft (-3.5%)
Depth
18.00 in (+50%)
Ix
566.0 in⁴ (+116%)

Heavier in Rectangular HSS

HSS 10x6x1/2

Weight
48.9 lb/ft (+2.0%)
Depth
10.00 in (-17%)
Ix
171.0 in⁴ (-35%)

Closest Iₓ in Rectangular HSS

HSS 12x10x5/16

Weight
44.6 lb/ft (-6.9%)
Depth
12.00 in (0.0%)
Ix
264.0 in⁴ (+0.8%)
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Source: AISC Shapes Database v16.0 · Methodology