UPN 100 — Dimensions, Weight & Section Properties
UPN channel per DIN 1026-1
UPN 100 is a UPN channel per DIN 1026-1, 100 mm tall and 50 mm wide, weighing 10.6 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 | 100 mm |
| Flange width b | 50 mm |
| Web thickness tₘ | 6 mm |
| Flange thickness tᶠ | 8.5 mm |
| Root radius r | 8.5 mm |
Weight & Cross-Section
| Weight per meter | 10.6 kg/m |
| Weight of a 6 m bar | 63.6 kg |
| Weight of a 12 m bar | 127.2 kg |
| Cross-section area A | 13.5 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 206 cm⁴ |
| Section modulus Wₓ | 41.2 cm³ |
| Radius of gyration iₓ | 3.91 cm |
| Moment of inertia Iᵧ | 29.3 cm⁴ |
| Section modulus Wᵧ | 8.49 cm³ |
| Radius of gyration iᵧ | 1.47 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|---|---|---|---|---|---|
| UPN 80 | 80 × 45 | 8.64 | 106 | 26.5 | −18 % | −49 % |
| UPN 100 (this page) | 100 × 50 | 10.6 | 206 | 41.2 | — | — |
| UPN 120 | 120 × 55 | 13.4 | 364 | 60.7 | +26 % | +77 % |
Deflection example
A simply supported UPN 100 spanning 2 m with a 10 kN point load at midspan deflects 3.85 mm (E = 210 GPa, Ix = 206 cm⁴). The L/360 serviceability limit for this span is 5.6 mm — the profile passes this quick check.
Calculate your own span and load →
Frequently Asked Questions
How much does UPN 100 weigh?
UPN 100 weighs 10.6 kg per meter. A standard 6 m bar weighs 63.6 kg and a 12 m bar 127.2 kg. The weight follows from the cross-section area of 13.5 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of UPN 100?
UPN 100 is 100 mm tall and 50 mm wide, with a web thickness of 6 mm, a flange thickness of 8.5 mm, and a root radius of 8.5 mm, per DIN 1026-1.
What is the moment of inertia of UPN 100?
About the strong axis, Ix = 206 cm⁴ with a section modulus Wx = 41.2 cm³. About the weak axis, Iy = 29.3 cm⁴ and Wy = 8.49 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
UPN 100 or UPN 120 — what does one size up change?
UPN 120 is about 26% heavier (13.4 vs 10.6 kg/m) but about 77% stiffer (Ix 364 vs 206 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