Steel Beam Sizes / UK / Universal Beams / UB 203×133×30

UB 203×133×30 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 203×133×30 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 20.16 lb/ft 30.00 kg/m
Depth, d 8.14 in 206.80 mm
Flange width, bf 5.27 in 133.90 mm
tw 0.252 in 6.400 mm
tf 0.378 in 9.600 mm
Area 5.92 in² 3,820.00 mm²
Ix 69.67 in⁴ 29,000,000 mm⁴
Iy 9.25 in⁴ 3,850,000 mm⁴
Sx 17.09 in³ 280,000.00 mm³
Sy 3.48 in³ 57,000.00 mm³
Zx 19.16 in³ 314,000.00 mm³
Zy 5.38 in³ 88,200.00 mm³
rx 3.43 in 87.10 mm
ry 1.25 in 31.70 mm
J 0.25 in⁴ 103,000.00 mm⁴
Cw 138.90 in⁶ 37,300,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UB 203×133×30.

Lighter in Universal beams

UB 254×102×28

Weight
28.3 kg/m (-5.7%)
Depth
260.4 mm (+26%)
Ix
40,000,000 mm⁴ (+38%)

Heavier in Universal beams

UB 254×146×31

Weight
31.1 kg/m (+3.7%)
Depth
251.4 mm (+22%)
Ix
44,100,000 mm⁴ (+52%)

Closest Iₓ in Universal beams

UB 254×102×22

Weight
22.0 kg/m (-27%)
Depth
254.0 mm (+23%)
Ix
28,400,000 mm⁴ (-2.1%)
Analyze in Beam Calculator Compare in Universal Beams finder

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