Steel Beam Sizes / UK / Universal Beams / UB 305×165×46

UB 305×165×46 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 305×165×46 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 30.98 lb/ft 46.10 kg/m
Depth, d 12.07 in 306.60 mm
Flange width, bf 6.52 in 165.70 mm
tw 0.264 in 6.700 mm
tf 0.465 in 11.800 mm
Area 9.10 in² 5,870.00 mm²
Ix 237.85 in⁴ 99,000,000 mm⁴
Iy 21.53 in⁴ 8,960,000 mm⁴
Sx 39.42 in³ 646,000.00 mm³
Sy 6.59 in³ 108,000.00 mm³
Zx 43.94 in³ 720,000.00 mm³
Zy 10.13 in³ 166,000.00 mm³
rx 5.12 in 130.00 mm
ry 1.54 in 39.00 mm
J 0.53 in⁴ 222,000.00 mm⁴
Cw 722.44 in⁶ 194,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 305×165×46.

Lighter in Universal beams

UB 406×140×46

Weight
46.0 kg/m (-0.2%)
Depth
403.2 mm (+32%)
Ix
157,000,000 mm⁴ (+59%)

Heavier in Universal beams

UB 305×127×48

Weight
48.1 kg/m (+4.3%)
Depth
311.0 mm (+1.4%)
Ix
95,800,000 mm⁴ (-3.2%)

Closest Iₓ in Universal beams

UB 356×127×39

Weight
39.1 kg/m (-15%)
Depth
353.4 mm (+15%)
Ix
102,000,000 mm⁴ (+3.0%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology