Steel Beam Sizes / Australia / Universal Beams / 310 UB 40

310 UB 40 Steel Beam Dimensions and Properties

ASNZS Universal beams · v2019.11

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

Units

Section diagram

310 UB 40 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 26.88 lb/ft 40.00 kg/m
Depth, d 11.96 in 303.80 mm
Flange width, bf 6.50 in 165.10 mm
tw 0.240 in 6.100 mm
tf 0.402 in 10.200 mm
Area 7.98 in² 5,150.00 mm²
Ix 204.69 in⁴ 85,200,000 mm⁴
Iy 18.33 in⁴ 7,630,000 mm⁴
Sx 34.23 in³ 560,895.33 mm³
Sy 5.64 in³ 92,428.83 mm³
Zx 38.08 in³ 624,000.00 mm³
Zy 8.60 in³ 141,000.00 mm³
rx 5.06 in 128.62 mm
ry 1.52 in 38.49 mm
J 0.35 in⁴ 147,000.00 mm⁴
Cw 610.72 in⁶ 164,000,006,144 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 310 UB 40.

Lighter in Universal beams

250 UB 37

Weight
37.0 kg/m (-7.5%)
Depth
256.0 mm (-16%)
Ix
55,600,000 mm⁴ (-35%)

Heavier in Universal beams

360 UB 45

Weight
45.0 kg/m (+13%)
Depth
352.0 mm (+16%)
Ix
121,000,000 mm⁴ (+42%)

Closest Iₓ in Universal beams

310 UB 46

Weight
46.0 kg/m (+15%)
Depth
307.1 mm (+1.1%)
Ix
99,500,000 mm⁴ (+17%)
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Source: Australian-Sections.xlsx (Sheets 1-19) · v2019.11 · Methodology