Steel Beam Sizes / Europe / UPN Channels / UPN 320
UPN 320 Steel Beam Dimensions and Properties
EN UPN taper flange channels · v2026.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
UPN 320 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 | 39.98 lb/ft | 59.50 kg/m |
| Depth, d | 12.60 in | 320.00 mm |
| Flange width, bf | 3.94 in | 100.00 mm |
| tw | 0.551 in | 14.000 mm |
| tf | 0.689 in | 17.500 mm |
| Area | 11.75 in² | 7,580.00 mm² |
| Ix | 261.87 in⁴ | 109,000,000 mm⁴ |
| Iy | 14.34 in⁴ | 5,970,000 mm⁴ |
| Sx | 41.44 in³ | 679,000.00 mm³ |
| Sy | 4.94 in³ | 81,000.00 mm³ |
| Zx | 50.41 in³ | 826,000.00 mm³ |
| Zy | 9.28 in³ | 152,000.00 mm³ |
| rx | 4.76 in | 121.00 mm |
| ry | 1.11 in | 28.10 mm |
| J | 1.60 in⁴ | 667,000.00 mm⁴ |
| Cw | 357.87 in⁶ | 96,100,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus UPN 320.
Lighter in UPN taper flange channels
UPN 300
- Weight
- 46.2 kg/m (-22%)
- Depth
- 300.0 mm (-6.2%)
- Ix
- 80,300,000 mm⁴ (-26%)
Heavier in UPN taper flange channels
UPN 350
- Weight
- 60.6 kg/m (+1.8%)
- Depth
- 350.0 mm (+9.4%)
- Ix
- 128,000,000 mm⁴ (+17%)
Closest Iₓ in UPN taper flange channels
UPN 280
- Weight
- 41.8 kg/m (-30%)
- Depth
- 280.0 mm (-12%)
- Ix
- 62,800,000 mm⁴ (-42%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Eurocode 3 - UK National Annex · Methodology