Steel Beam Sizes / AISC / Angles / L8x4x1/2

L8x4x1/2 Steel Beam Dimensions and Properties

AISC Angles · v16.0

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

L8x4x1/2 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 19.60 lb/ft 29.00 kg/m
Width 8.00 in 203.00 mm
Height 4.00 in 102.00 mm
t 0.500 in 12.700 mm
Area 5.80 in² 3,740.00 mm²
Ix 38.60 in⁴ 16,100,000 mm⁴
Iy 6.75 in⁴ 2,810,000 mm⁴
Sx 7.48 in³ 123,000.00 mm³
Sy 2.15 in³ 35,200.00 mm³
Zx 13.10 in³ 215,000.00 mm³
Zy 3.91 in³ 64,100.00 mm³
rx 2.58 in 65.50 mm
ry 1.08 in 27.40 mm
J 0.50 in⁴ 209,000.00 mm⁴
Cw 1.80 in⁶ 483,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus L8x4x1/2.

Lighter in L8

L8x4x7/16

Weight
17.2 lb/ft (-12%)
Depth
4.00 in (0.0%)
Ix
34.2 in⁴ (-11%)

Heavier in L8

L8x6x7/16

Weight
20.2 lb/ft (+3.1%)
Depth
6.00 in (+50%)
Ix
39.3 in⁴ (+1.8%)

Closest Iₓ in L8

L8x4x9/16

Weight
21.9 lb/ft (+12%)
Depth
4.00 in (0.0%)
Ix
42.9 in⁴ (+11%)

Similar weight in L7

L7x4x1/2

Weight
17.9 lb/ft (-8.7%)
Depth
4.00 in (0.0%)
Ix
26.6 in⁴ (-31%)
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Source: AISC Shapes Database v16.0 · Methodology