Steel Beam Sizes / UK / Universal Beams / UB 406×140×46

UB 406×140×46 Steel Beam Dimensions and Properties

UK Universal beams · v2023.11

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

Units

Section diagram

UB 406×140×46 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 30.91 lb/ft 46.00 kg/m
Depth, d 15.87 in 403.20 mm
Flange width, bf 5.60 in 142.20 mm
tw 0.268 in 6.800 mm
tf 0.441 in 11.200 mm
Area 9.08 in² 5,860.00 mm²
Ix 377.19 in⁴ 157,000,000 mm⁴
Iy 12.93 in⁴ 5,380,000 mm⁴
Sx 47.48 in³ 778,000.00 mm³
Sy 4.64 in³ 76,000.00 mm³
Zx 54.19 in³ 888,000.00 mm³
Zy 7.20 in³ 118,000.00 mm³
rx 6.46 in 164.00 mm
ry 1.19 in 30.30 mm
J 0.46 in⁴ 190,000.00 mm⁴
Cw 767.12 in⁶ 206,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 406×140×46.

Lighter in Universal beams

UB 356×171×45

Weight
45.0 kg/m (-2.2%)
Depth
351.4 mm (-13%)
Ix
121,000,000 mm⁴ (-23%)

Heavier in Universal beams

UB 305×165×46

Weight
46.1 kg/m (+0.2%)
Depth
306.6 mm (-24%)
Ix
99,000,000 mm⁴ (-37%)

Closest Iₓ in Universal beams

UB 356×171×57

Weight
57.0 kg/m (+24%)
Depth
358.0 mm (-11%)
Ix
160,000,000 mm⁴ (+1.9%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology