Steel Beam Sizes / UK / Universal Beams / UB 920×420×656

UB 920×420×656 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 920×420×656 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 440.81 lb/ft 656.00 kg/m
Depth, d 38.86 in 987.00 mm
Flange width, bf 16.97 in 431.00 mm
tw 1.358 in 34.500 mm
tf 2.441 in 62.000 mm
Area 129.43 in² 83,500.00 mm²
Ix 32,073.50 in⁴ 13,350,000,000 mm⁴
Iy 1,994.08 in⁴ 830,000,000 mm⁴
Sx 1,653.74 in³ 27,100,000 mm³
Sy 234.94 in³ 3,850,000 mm³
Zx 1,910.04 in³ 31,300,000 mm³
Zy 367.36 in³ 6,020,000 mm³
rx 15.75 in 400.00 mm
ry 3.93 in 99.70 mm
J 191.00 in⁴ 79,500,000 mm⁴
Cw 661,364.17 in⁶ 177,600,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 920×420×656.

Lighter in Universal beams

UB 1000×400×642

Weight
642.0 kg/m (-2.1%)
Depth
1,048.0 mm (+6.2%)
Ix
14,510,000,000 mm⁴ (+8.7%)

Heavier in Universal beams

UB 920×420×725

Weight
725.0 kg/m (+11%)
Depth
999.0 mm (+1.2%)
Ix
14,920,000,000 mm⁴ (+12%)

Closest Iₓ in Universal beams

UB 1000×400×591

Weight
591.0 kg/m (-9.9%)
Depth
1,040.0 mm (+5.4%)
Ix
13,310,000,000 mm⁴ (-0.3%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology