Steel Beam Sizes / UK / Universal Beams / UB 920×420×390

UB 920×420×390 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 920×420×390 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 262.07 lb/ft 390.00 kg/m
Depth, d 36.85 in 936.00 mm
Flange width, bf 16.54 in 420.00 mm
tw 0.839 in 21.300 mm
tf 1.441 in 36.600 mm
Area 76.57 in² 49,400.00 mm²
Ix 17,826.62 in⁴ 7,420,000,000 mm⁴
Iy 1,088.34 in⁴ 453,000,000 mm⁴
Sx 964.18 in³ 15,800,000 mm³
Sy 131.81 in³ 2,160,000 mm³
Zx 1,092.33 in³ 17,900,000 mm³
Zy 203.21 in³ 3,330,000 mm³
rx 15.24 in 387.00 mm
ry 3.77 in 95.70 mm
J 40.60 in⁴ 16,900,000 mm⁴
Cw 341,109.00 in⁶ 91,600,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 920×420×390.

Lighter in Universal beams

UB 914×305×381

Weight
381.0 kg/m (-2.3%)
Depth
951.0 mm (+1.6%)
Ix
6,970,000,000 mm⁴ (-6.1%)

Heavier in Universal beams

UB 1016×305×393

Weight
393.0 kg/m (+0.8%)
Depth
1,016.0 mm (+8.5%)
Ix
8,080,000,000 mm⁴ (+8.9%)

Closest Iₓ in Universal beams

UB 1016×305×350

Weight
350.0 kg/m (-10%)
Depth
1,008.0 mm (+7.7%)
Ix
7,230,000,000 mm⁴ (-2.6%)
Analyze in Beam Calculator Compare in Universal Beams finder

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