Steel Beam Sizes / Australia / Universal Beams / 150 UB 18
150 UB 18 Dimensions, Weight and Section Properties
ASNZS Universal beams · v2019.11
150 UB 18: 155 mm depth, 75 mm flange width, 18 kg/m weight. View the full dimensions and properties in imperial and metric units below.
Need this steel supplied or fabricated?
Request project pricing for delivery in the United States or Canada.
Get a steel quote →Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
150 UB 18 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 | 12.10 lb/ft | 18.00 kg/m |
| Depth, d | 6.10 in | 155.00 mm |
| Flange width, bf | 2.95 in | 75.00 mm |
| tw | 0.236 in | 6.000 mm |
| tf | 0.374 in | 9.500 mm |
| Area | 3.57 in² | 2,300.00 mm² |
| Ix | 21.74 in⁴ | 9,050,000 mm⁴ |
| Iy | 1.61 in⁴ | 672,000.00 mm⁴ |
| Sx | 7.13 in³ | 116,774.19 mm³ |
| Sy | 1.09 in³ | 17,920.00 mm³ |
| Zx | 8.24 in³ | 135,000.00 mm³ |
| Zy | 1.72 in³ | 28,200.00 mm³ |
| rx | 2.47 in | 62.73 mm |
| ry | 0.67 in | 17.09 mm |
| J | 0.15 in⁴ | 60,500.00 mm⁴ |
| Cw | 13.22 in⁶ | 3,550,000,128 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus 150 UB 18.
Lighter in Universal beams
150 UB 14
- Weight
- 14.0 kg/m (-22%)
- Depth
- 150.0 mm (-3.2%)
- Ix
- 6,660,000 mm⁴ (-26%)
Heavier in Universal beams
180 UB 22
- Weight
- 22.0 kg/m (+22%)
- Depth
- 179.0 mm (+15%)
- Ix
- 15,300,000 mm⁴ (+69%)
Another Iₓ option in Universal beams
180 UB 18
- Weight
- 18.0 kg/m (0.0%)
- Depth
- 175.0 mm (+13%)
- Ix
- 12,100,000 mm⁴ (+34%)
Source: Australian-Sections.xlsx (Sheets 1-19) · v2019.11 · Methodology