Steel Beam Sizes / UK / Universal Beams / UB 356×171×51

UB 356×171×51 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 356×171×51 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 34.27 lb/ft 51.00 kg/m
Depth, d 13.98 in 355.00 mm
Flange width, bf 6.75 in 171.50 mm
tw 0.291 in 7.400 mm
tf 0.453 in 11.500 mm
Area 10.06 in² 6,490.00 mm²
Ix 338.75 in⁴ 141,000,000 mm⁴
Iy 23.26 in⁴ 9,680,000 mm⁴
Sx 48.57 in³ 796,000.00 mm³
Sy 6.90 in³ 113,000.00 mm³
Zx 54.68 in³ 896,000.00 mm³
Zy 10.62 in³ 174,000.00 mm³
rx 5.83 in 148.00 mm
ry 1.52 in 38.60 mm
J 0.57 in⁴ 238,000.00 mm⁴
Cw 1,061.31 in⁶ 285,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 356×171×51.

Lighter in Universal beams

UB 305×127×48

Weight
48.1 kg/m (-5.7%)
Depth
311.0 mm (-12%)
Ix
95,800,000 mm⁴ (-32%)

Heavier in Universal beams

UB 457×152×52

Weight
52.3 kg/m (+2.5%)
Depth
449.8 mm (+27%)
Ix
214,000,000 mm⁴ (+52%)

Closest Iₓ in Universal beams

UB 406×140×39

Weight
39.0 kg/m (-24%)
Depth
398.0 mm (+12%)
Ix
125,000,000 mm⁴ (-11%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology