HEB 280 — Dimensions, Weight & Section Properties
HEB wide-flange beam per EN 10365 (DIN 1025-2)
HEB 280 is a HEB wide-flange beam per EN 10365 (DIN 1025-2), 280 mm tall and 280 mm wide, weighing 103 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 | 280 mm |
| Web thickness tₘ | 10.5 mm |
| Flange thickness tᶠ | 18 mm |
| Root radius r | 24 mm |
Weight & Cross-Section
| Weight per meter | 103 kg/m |
| Weight of a 6 m bar | 618 kg |
| Weight of a 12 m bar | 1,236 kg |
| Cross-section area A | 131 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 19,270 cm⁴ |
| Section modulus Wₓ | 1,376 cm³ |
| Radius of gyration iₓ | 12.1 cm |
| Moment of inertia Iᵧ | 6,595 cm⁴ |
| Section modulus Wᵧ | 471 cm³ |
| Radius of gyration iᵧ | 7.09 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|---|---|---|---|---|---|
| HEB 260 | 260 × 260 | 93 | 14,920 | 1,148 | −10 % | −23 % |
| HEB 280 (this page) | 280 × 280 | 103 | 19,270 | 1,376 | — | — |
| HEB 300 | 300 × 300 | 117 | 25,170 | 1,678 | +14 % | +31 % |
Deflection example
A simply supported HEB 280 spanning 6 m with a 10 kN point load at midspan deflects 1.11 mm (E = 210 GPa, Ix = 19,270 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 HEB 280 weigh?
HEB 280 weighs 103 kg per meter. A standard 6 m bar weighs 618 kg and a 12 m bar 1,236 kg. The weight follows from the cross-section area of 131 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of HEB 280?
HEB 280 is 280 mm tall and 280 mm wide, with a web thickness of 10.5 mm, a flange thickness of 18 mm, and a root radius of 24 mm, per EN 10365 (DIN 1025-2).
What is the moment of inertia of HEB 280?
About the strong axis, Ix = 19,270 cm⁴ with a section modulus Wx = 1,376 cm³. About the weak axis, Iy = 6,595 cm⁴ and Wy = 471 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
HEB 280 or HEB 300 — what does one size up change?
HEB 300 is about 14% heavier (117 vs 103 kg/m) but about 31% stiffer (Ix 25,170 vs 19,270 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