UPN 320 — Dimensions, Weight & Section Properties
UPN channel per DIN 1026-1
UPN 320 is a UPN channel per DIN 1026-1, 320 mm tall and 100 mm wide, weighing 59.5 kg per meter. All dimensions and section properties below are the standard published values used in structural design across Europe.
Typical uses: floor beams, columns, frames, and general steel construction. For a quick strength check, use the deflection example below or open the beam calculator with your own span and load.
Dimensions (mm)
| Height h | 320 mm |
| Flange width b | 100 mm |
| Web thickness tₘ | 14 mm |
| Flange thickness tᶠ | 17.5 mm |
| Root radius r | 17.5 mm |
Weight & Cross-Section
| Weight per meter | 59.5 kg/m |
| Weight of a 6 m bar | 357 kg |
| Weight of a 12 m bar | 714 kg |
| Cross-section area A | 75.8 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 10,870 cm⁴ |
| Section modulus Wₓ | 679 cm³ |
| Radius of gyration iₓ | 12.1 cm |
| Moment of inertia Iᵧ | 597 cm⁴ |
| Section modulus Wᵧ | 80.6 cm³ |
| Radius of gyration iᵧ | 2.81 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|---|---|---|---|---|---|
| UPN 300 | 300 × 100 | 46.2 | 8,030 | 535 | −22 % | −26 % |
| UPN 320 (this page) | 320 × 100 | 59.5 | 10,870 | 679 | — | — |
| UPN 350 | 350 × 100 | 60.6 | 12,840 | 734 | +2 % | +18 % |
Deflection example
A simply supported UPN 320 spanning 6 m with a 10 kN point load at midspan deflects 1.97 mm (E = 210 GPa, Ix = 10,870 cm⁴). The L/360 serviceability limit for this span is 16.7 mm — the profile passes this quick check.
Calculate your own span and load →
Frequently Asked Questions
How much does UPN 320 weigh?
UPN 320 weighs 59.5 kg per meter. A standard 6 m bar weighs 357 kg and a 12 m bar 714 kg. The weight follows from the cross-section area of 75.8 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of UPN 320?
UPN 320 is 320 mm tall and 100 mm wide, with a web thickness of 14 mm, a flange thickness of 17.5 mm, and a root radius of 17.5 mm, per DIN 1026-1.
What is the moment of inertia of UPN 320?
About the strong axis, Ix = 10,870 cm⁴ with a section modulus Wx = 679 cm³. About the weak axis, Iy = 597 cm⁴ and Wy = 80.6 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
UPN 320 or UPN 350 — what does one size up change?
UPN 350 is about 2% heavier (60.6 vs 59.5 kg/m) but about 18% stiffer (Ix 12,840 vs 10,870 cm⁴). Going one size up is usually the cheapest way to cut deflection, because stiffness grows much faster than weight.
Values are entered from the governing standard’s published tables and cross-checked programmatically against its mass and section formulas before publication. Spotted an error? Write to advertising@metalabout.net — verified corrections ship within days. About