Steel Beam Sizes / UK / Universal Beams / UB 406×178×54

UB 406×178×54 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 406×178×54 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 36.35 lb/ft 54.10 kg/m
Depth, d 15.85 in 402.60 mm
Flange width, bf 7.00 in 177.70 mm
tw 0.303 in 7.700 mm
tf 0.429 in 10.900 mm
Area 10.70 in² 6,900.00 mm²
Ix 449.27 in⁴ 187,000,000 mm⁴
Iy 24.51 in⁴ 10,200,000 mm⁴
Sx 56.75 in³ 930,000.00 mm³
Sy 7.02 in³ 115,000.00 mm³
Zx 64.69 in³ 1,060,000 mm³
Zy 10.86 in³ 178,000.00 mm³
rx 6.50 in 165.00 mm
ry 1.52 in 38.50 mm
J 0.55 in⁴ 231,000.00 mm⁴
Cw 1,456.04 in⁶ 391,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 406×178×54.

Lighter in Universal beams

UB 305×165×54

Weight
54.0 kg/m (-0.2%)
Depth
310.4 mm (-23%)
Ix
117,000,000 mm⁴ (-37%)

Heavier in Universal beams

UB 356×171×57

Weight
57.0 kg/m (+5.4%)
Depth
358.0 mm (-11%)
Ix
160,000,000 mm⁴ (-14%)

Closest Iₓ in Universal beams

UB 356×171×67

Weight
67.1 kg/m (+24%)
Depth
363.4 mm (-9.7%)
Ix
195,000,000 mm⁴ (+4.3%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology