Steel Beam Sizes / UK / Angles / L 40×40×5

L 40×40×5 Steel Beam Dimensions and Properties

UK Angles · v2023.11

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

Units

Section diagram

L 40×40×5 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 2.00 lb/ft 2.97 kg/m
Width 1.57 in 40.00 mm
Height 1.57 in 40.00 mm
t 0.197 in 5.000 mm
Area 0.59 in² 379.00 mm²
Ix 0.13 in⁴ 54,300.00 mm⁴
Iy 0.13 in⁴ 54,300.00 mm⁴
Sx 0.12 in³ 1,910.00 mm³
Sy 0.12 in³ 1,910.00 mm³
rx 0.47 in 12.00 mm
ry 0.47 in 12.00 mm
J 0.01 in⁴ 3,520.00 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus L 40×40×5.

Lighter in Angles

L 45×45×4

Weight
2.7 kg/m (-7.7%)
Depth
45.0 mm (+13%)
Ix
64,300 mm⁴ (+18%)

Heavier in Angles

L 45×45×4.5

Weight
3.1 kg/m (+3.0%)
Depth
45.0 mm (+13%)
Ix
71,400 mm⁴ (+31%)

Closest Iₓ in Angles

L 45×45×3

Weight
2.1 kg/m (-30%)
Depth
45.0 mm (+13%)
Ix
49,300 mm⁴ (-9.2%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Eurocode 3 - UK National Annex · Methodology