UPN 300 — Dimensions, Weight & Section Properties
UPN channel per DIN 1026-1
UPN 300 is a UPN channel per DIN 1026-1, 300 mm tall and 100 mm wide, weighing 46.2 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 300: cross-section drawn to scale from the tabulated dimensions (h 300, b 100, tw 10, tf 16, r 16 mm)Dimensions (mm)
| Height h | 300 mm |
| Flange width b | 100 mm |
| Web thickness tₘ | 10 mm |
| Flange thickness tᶠ | 16 mm |
| Root radius r | 16 mm |
Weight & Cross-Section
| Weight per meter | 46.2 kg/m |
| Weight of a 6 m bar | 277.2 kg |
| Weight of a 12 m bar | 554.4 kg |
| Cross-section area A | 58.8 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 8,030 cm⁴ |
| Section modulus Wₓ | 535 cm³ |
| Radius of gyration iₓ | 11.7 cm |
| Moment of inertia Iᵧ | 495 cm⁴ |
| Section modulus Wᵧ | 67.8 cm³ |
| Radius of gyration iᵧ | 2.9 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|
| UPN 280 | 280 × 95 | 41.8 | 6,280 | 448 | −10 % | −22 % |
| UPN 300 (this page) | 300 × 100 | 46.2 | 8,030 | 535 | — | — |
| UPN 320 | 320 × 100 | 59.5 | 10,870 | 679 | +29 % | +35 % |
Deflection example
A simply supported UPN 300 spanning 6 m with a 10 kN point load at midspan deflects 2.67 mm (E = 210 GPa, Ix = 8,030 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 300 weigh?
UPN 300 weighs 46.2 kg per meter. A standard 6 m bar weighs 277.2 kg and a 12 m bar 554.4 kg. The weight follows from the cross-section area of 58.8 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of UPN 300?
UPN 300 is 300 mm tall and 100 mm wide, with a web thickness of 10 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 300?
About the strong axis, Ix = 8,030 cm⁴ with a section modulus Wx = 535 cm³. About the weak axis, Iy = 495 cm⁴ and Wy = 67.8 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
UPN 300 or UPN 320 — what does one size up change?
UPN 320 is about 29% heavier (59.5 vs 46.2 kg/m) but about 35% stiffer (Ix 10,870 vs 8,030 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