Steel Beam Sizes / UK / Universal Beams / UB 920×420×491

UB 920×420×491 Steel Beam Dimensions and Properties

UK Universal beams · v2023.11

Analyze in Beam Calculator Back to Universal Beams

Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

UB 920×420×491 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 329.94 lb/ft 491.00 kg/m
Depth, d 37.68 in 957.00 mm
Flange width, bf 16.61 in 422.00 mm
tw 1.020 in 25.900 mm
tf 1.850 in 47.000 mm
Area 96.57 in² 62,300.00 mm²
Ix 23,208.24 in⁴ 9,660,000,000 mm⁴
Iy 1,417.48 in⁴ 590,000,000 mm⁴
Sx 1,232.68 in³ 20,200,000 mm³
Sy 170.87 in³ 2,800,000 mm³
Zx 1,403.55 in³ 23,000,000 mm³
Zy 264.84 in³ 4,340,000 mm³
rx 15.51 in 394.00 mm
ry 3.83 in 97.30 mm
J 82.65 in⁴ 34,400,000 mm⁴
Cw 455,060.26 in⁶ 122,200,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 920×420×491.

Lighter in Universal beams

UB 1000×400×483

Weight
483.0 kg/m (-1.6%)
Depth
1,020.0 mm (+6.6%)
Ix
10,670,000,000 mm⁴ (+10%)

Heavier in Universal beams

UB 1016×305×494

Weight
494.0 kg/m (+0.6%)
Depth
1,036.0 mm (+8.3%)
Ix
10,280,000,000 mm⁴ (+6.4%)

Closest Iₓ in Universal beams

UB 1000×400×443

Weight
443.0 kg/m (-9.8%)
Depth
1,012.0 mm (+5.7%)
Ix
9,660,000,000 mm⁴ (0.0%)
Analyze in Beam Calculator Compare in Universal Beams finder

Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology