Steel Beam Sizes / UK / Universal Beams / UB 686×254×152

UB 686×254×152 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 686×254×152 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 102.14 lb/ft 152.00 kg/m
Depth, d 27.07 in 687.50 mm
Flange width, bf 10.02 in 254.50 mm
tw 0.520 in 13.200 mm
tf 0.827 in 21.000 mm
Area 30.07 in² 19,400.00 mm²
Ix 3,603.76 in⁴ 1,500,000,000 mm⁴
Iy 138.87 in⁴ 57,800,000 mm⁴
Sx 266.67 in³ 4,370,000 mm³
Sy 27.70 in³ 454,000.00 mm³
Zx 305.12 in³ 5,000,000 mm³
Zy 43.33 in³ 710,000.00 mm³
rx 10.94 in 278.00 mm
ry 2.15 in 54.60 mm
J 5.29 in⁴ 2,200,000 mm⁴
Cw 23,870.18 in⁶ 6,410,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 686×254×152.

Lighter in Universal beams

UB 610×305×149

Weight
149.0 kg/m (-2.0%)
Depth
612.4 mm (-11%)
Ix
1,260,000,000 mm⁴ (-16%)

Heavier in Universal beams

UB 610×229×153

Weight
153.0 kg/m (+0.7%)
Depth
623.0 mm (-9.4%)
Ix
1,250,000,000 mm⁴ (-17%)

Closest Iₓ in Universal beams

UB 762×267×134

Weight
134.0 kg/m (-12%)
Depth
750.0 mm (+9.1%)
Ix
1,510,000,000 mm⁴ (+0.7%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology