UPN 380 — Dimensions, Weight & Section Properties
UPN channel per DIN 1026-1
UPN 380 is a UPN channel per DIN 1026-1, 380 mm tall and 102 mm wide, weighing 63.1 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.
UPN 380: cross-section drawn to scale from the tabulated dimensions (h 380, b 102, tw 13.5, tf 16, r 16 mm)Dimensions (mm)
| Height h | 380 mm |
| Flange width b | 102 mm |
| Web thickness tₘ | 13.5 mm |
| Flange thickness tᶠ | 16 mm |
| Root radius r | 16 mm |
Weight & Cross-Section
| Weight per meter | 63.1 kg/m |
| Weight of a 6 m bar | 378.6 kg |
| Weight of a 12 m bar | 757.2 kg |
| Cross-section area A | 80.4 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 15,760 cm⁴ |
| Section modulus Wₓ | 829 cm³ |
| Radius of gyration iₓ | 14 cm |
| Moment of inertia Iᵧ | 615 cm⁴ |
| Section modulus Wᵧ | 78.7 cm³ |
| Radius of gyration iᵧ | 2.77 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|
| UPN 350 | 350 × 100 | 60.6 | 12,840 | 734 | −4 % | −19 % |
| UPN 380 (this page) | 380 × 102 | 63.1 | 15,760 | 829 | — | — |
| UPN 400 | 400 × 110 | 71.8 | 20,350 | 1,020 | +14 % | +29 % |
Deflection example
A simply supported UPN 380 spanning 8 m with a 10 kN point load at midspan deflects 3.22 mm (E = 210 GPa, Ix = 15,760 cm⁴). The L/360 serviceability limit for this span is 22.2 mm — the profile passes this quick check.
Calculate your own span and load →
Frequently Asked Questions
How much does UPN 380 weigh?
UPN 380 weighs 63.1 kg per meter. A standard 6 m bar weighs 378.6 kg and a 12 m bar 757.2 kg. The weight follows from the cross-section area of 80.4 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of UPN 380?
UPN 380 is 380 mm tall and 102 mm wide, with a web thickness of 13.5 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 380?
About the strong axis, Ix = 15,760 cm⁴ with a section modulus Wx = 829 cm³. About the weak axis, Iy = 615 cm⁴ and Wy = 78.7 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
UPN 380 or UPN 400 — what does one size up change?
UPN 400 is about 14% heavier (71.8 vs 63.1 kg/m) but about 29% stiffer (Ix 20,350 vs 15,760 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