Steel Beam Sizes / UK / Universal Beams / UB 406×178×74

UB 406×178×74 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 406×178×74 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 49.86 lb/ft 74.20 kg/m
Depth, d 16.25 in 412.80 mm
Flange width, bf 7.07 in 179.50 mm
tw 0.374 in 9.500 mm
tf 0.630 in 16.000 mm
Area 14.65 in² 9,450.00 mm²
Ix 655.89 in⁴ 273,000,000 mm⁴
Iy 37.00 in⁴ 15,400,000 mm⁴
Sx 80.55 in³ 1,320,000 mm³
Sy 10.50 in³ 172,000.00 mm³
Zx 91.54 in³ 1,500,000 mm³
Zy 16.29 in³ 267,000.00 mm³
rx 6.69 in 170.00 mm
ry 1.59 in 40.40 mm
J 1.51 in⁴ 628,000.00 mm⁴
Cw 2,260.41 in⁶ 607,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 406×178×74.

Lighter in Universal beams

UB 533×165×74

Weight
74.0 kg/m (-0.3%)
Depth
529.0 mm (+28%)
Ix
411,000,000 mm⁴ (+51%)

Heavier in Universal beams

UB 457×191×74

Weight
74.3 kg/m (+0.1%)
Depth
457.0 mm (+11%)
Ix
333,000,000 mm⁴ (+22%)

Closest Iₓ in Universal beams

UB 457×152×67

Weight
67.2 kg/m (-9.4%)
Depth
458.0 mm (+11%)
Ix
289,000,000 mm⁴ (+5.9%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology