Steel Beam Sizes / UK / Angles / L 180×180×18

L 180×180×18 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 180×180×18 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 32.66 lb/ft 48.60 kg/m
Width 7.09 in 180.00 mm
Height 7.09 in 180.00 mm
t 0.709 in 18.000 mm
Area 9.59 in² 6,190.00 mm²
Ix 44.93 in⁴ 18,700,000 mm⁴
Iy 44.93 in⁴ 18,700,000 mm⁴
Sx 8.85 in³ 145,000.00 mm³
Sy 8.85 in³ 145,000.00 mm³
rx 2.16 in 54.90 mm
ry 2.16 in 54.90 mm
J 1.71 in⁴ 712,000.00 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus L 180×180×18.

Lighter in Angles

L 200×200×16

Weight
48.5 kg/m (-0.2%)
Depth
200.0 mm (+11%)
Ix
24,300,000 mm⁴ (+30%)

Heavier in Angles

L 180×180×19

Weight
51.1 kg/m (+5.1%)
Depth
180.0 mm (0.0%)
Ix
19,600,000 mm⁴ (+4.8%)

Closest Iₓ in Angles

L 200×100×16

Weight
35.9 kg/m (-26%)
Depth
200.0 mm (+11%)
Ix
18,600,000 mm⁴ (-0.5%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Eurocode 3 - UK National Annex · Methodology