UPN 350 — Dimensions, Weight & Section Properties
UPN channel per DIN 1026-1
UPN 350 is a UPN channel per DIN 1026-1, 350 mm tall and 100 mm wide, weighing 60.6 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 | 350 mm |
| Flange width b | 100 mm |
| Web thickness tₘ | 14 mm |
| Flange thickness tᶠ | 16 mm |
| Root radius r | 16 mm |
Weight & Cross-Section
| Weight per meter | 60.6 kg/m |
| Weight of a 6 m bar | 363.6 kg |
| Weight of a 12 m bar | 727.2 kg |
| Cross-section area A | 77.3 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 12,840 cm⁴ |
| Section modulus Wₓ | 734 cm³ |
| Radius of gyration iₓ | 12.9 cm |
| Moment of inertia Iᵧ | 570 cm⁴ |
| Section modulus Wᵧ | 75 cm³ |
| Radius of gyration iᵧ | 2.72 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|---|---|---|---|---|---|
| UPN 320 | 320 × 100 | 59.5 | 10,870 | 679 | −2 % | −15 % |
| UPN 350 (this page) | 350 × 100 | 60.6 | 12,840 | 734 | — | — |
| UPN 380 | 380 × 102 | 63.1 | 15,760 | 829 | +4 % | +23 % |
Deflection example
A simply supported UPN 350 spanning 7 m with a 10 kN point load at midspan deflects 2.65 mm (E = 210 GPa, Ix = 12,840 cm⁴). The L/360 serviceability limit for this span is 19.4 mm — the profile passes this quick check.
Calculate your own span and load →
Frequently Asked Questions
How much does UPN 350 weigh?
UPN 350 weighs 60.6 kg per meter. A standard 6 m bar weighs 363.6 kg and a 12 m bar 727.2 kg. The weight follows from the cross-section area of 77.3 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of UPN 350?
UPN 350 is 350 mm tall and 100 mm wide, with a web thickness of 14 mm, a flange thickness of 16 mm, and a root radius of 16 mm, per DIN 1026-1.
What is the moment of inertia of UPN 350?
About the strong axis, Ix = 12,840 cm⁴ with a section modulus Wx = 734 cm³. About the weak axis, Iy = 570 cm⁴ and Wy = 75 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
UPN 350 or UPN 380 — what does one size up change?
UPN 380 is about 4% heavier (63.1 vs 60.6 kg/m) but about 23% stiffer (Ix 15,760 vs 12,840 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