Steel Beam Sizes / UK / Universal Beams / UB 920×420×449

UB 920×420×449 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 920×420×449 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 301.71 lb/ft 449.00 kg/m
Depth, d 37.32 in 948.00 mm
Flange width, bf 16.65 in 423.00 mm
tw 0.945 in 24.000 mm
tf 1.681 in 42.700 mm
Area 88.51 in² 57,100.00 mm²
Ix 21,021.96 in⁴ 8,750,000,000 mm⁴
Iy 1,297.36 in⁴ 540,000,000 mm⁴
Sx 1,122.84 in³ 18,400,000 mm³
Sy 155.61 in³ 2,550,000 mm³
Zx 1,281.50 in³ 21,000,000 mm³
Zy 241.04 in³ 3,950,000 mm³
rx 15.39 in 391.00 mm
ry 3.83 in 97.20 mm
J 63.19 in⁴ 26,300,000 mm⁴
Cw 411,863.05 in⁶ 110,600,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 920×420×449.

Lighter in Universal beams

UB 1000×400×443

Weight
443.0 kg/m (-1.3%)
Depth
1,012.0 mm (+6.8%)
Ix
9,660,000,000 mm⁴ (+10%)

Heavier in Universal beams

UB 914×305×474

Weight
474.0 kg/m (+5.6%)
Depth
971.0 mm (+2.4%)
Ix
8,860,000,000 mm⁴ (+1.3%)

Closest Iₓ in Universal beams

UB 1100×400×343

Weight
343.0 kg/m (-24%)
Depth
1,090.0 mm (+15%)
Ix
8,780,000,000 mm⁴ (+0.3%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology