IPN 280 — Dimensions, Weight & Section Properties
IPN I-beam per EN 10365 (DIN 1025-1)
IPN 280 is a IPN I-beam per EN 10365 (DIN 1025-1), 280 mm tall and 119 mm wide, weighing 47.9 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 | 280 mm |
| Flange width b | 119 mm |
| Web thickness tₘ | 10.1 mm |
| Flange thickness tᶠ | 15.2 mm |
| Root radius r | 10.1 mm |
Weight & Cross-Section
| Weight per meter | 47.9 kg/m |
| Weight of a 6 m bar | 287.4 kg |
| Weight of a 12 m bar | 574.8 kg |
| Cross-section area A | 61 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 7,590 cm⁴ |
| Section modulus Wₓ | 542 cm³ |
| Radius of gyration iₓ | 11.1 cm |
| Moment of inertia Iᵧ | 364 cm⁴ |
| Section modulus Wᵧ | 61.2 cm³ |
| Radius of gyration iᵧ | 2.45 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|---|---|---|---|---|---|
| IPN 260 | 260 × 113 | 41.9 | 5,740 | 442 | −13 % | −24 % |
| IPN 280 (this page) | 280 × 119 | 47.9 | 7,590 | 542 | — | — |
| IPN 300 | 300 × 125 | 54.2 | 9,800 | 653 | +13 % | +29 % |
Deflection example
A simply supported IPN 280 spanning 6 m with a 10 kN point load at midspan deflects 2.82 mm (E = 210 GPa, Ix = 7,590 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 IPN 280 weigh?
IPN 280 weighs 47.9 kg per meter. A standard 6 m bar weighs 287.4 kg and a 12 m bar 574.8 kg. The weight follows from the cross-section area of 61 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of IPN 280?
IPN 280 is 280 mm tall and 119 mm wide, with a web thickness of 10.1 mm, a flange thickness of 15.2 mm, and a root radius of 10.1 mm, per EN 10365 (DIN 1025-1).
What is the moment of inertia of IPN 280?
About the strong axis, Ix = 7,590 cm⁴ with a section modulus Wx = 542 cm³. About the weak axis, Iy = 364 cm⁴ and Wy = 61.2 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
IPN 280 or IPN 300 — what does one size up change?
IPN 300 is about 13% heavier (54.2 vs 47.9 kg/m) but about 29% stiffer (Ix 9,800 vs 7,590 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