HEA 300 — Dimensions, Weight & Section Properties
HEA wide-flange beam per EN 10365 (DIN 1025-3)
HEA 300 is a HEA wide-flange beam per EN 10365 (DIN 1025-3), 290 mm tall and 300 mm wide, weighing 88.3 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 | 290 mm |
| Flange width b | 300 mm |
| Web thickness tₘ | 8.5 mm |
| Flange thickness tᶠ | 14 mm |
| Root radius r | 27 mm |
Weight & Cross-Section
| Weight per meter | 88.3 kg/m |
| Weight of a 6 m bar | 529.8 kg |
| Weight of a 12 m bar | 1,059.6 kg |
| Cross-section area A | 112 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 18,260 cm⁴ |
| Section modulus Wₓ | 1,260 cm³ |
| Radius of gyration iₓ | 12.7 cm |
| Moment of inertia Iᵧ | 6,310 cm⁴ |
| Section modulus Wᵧ | 421 cm³ |
| Radius of gyration iᵧ | 7.49 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|---|---|---|---|---|---|
| HEA 280 | 270 × 280 | 76.4 | 13,670 | 1,013 | −13 % | −25 % |
| HEA 300 (this page) | 290 × 300 | 88.3 | 18,260 | 1,260 | — | — |
| HEA 320 | 310 × 300 | 97.6 | 22,930 | 1,479 | +11 % | +26 % |
Deflection example
A simply supported HEA 300 spanning 6 m with a 10 kN point load at midspan deflects 1.17 mm (E = 210 GPa, Ix = 18,260 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 HEA 300 weigh?
HEA 300 weighs 88.3 kg per meter. A standard 6 m bar weighs 529.8 kg and a 12 m bar 1,059.6 kg. The weight follows from the cross-section area of 112 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of HEA 300?
HEA 300 is 290 mm tall and 300 mm wide, with a web thickness of 8.5 mm, a flange thickness of 14 mm, and a root radius of 27 mm, per EN 10365 (DIN 1025-3).
What is the moment of inertia of HEA 300?
About the strong axis, Ix = 18,260 cm⁴ with a section modulus Wx = 1,260 cm³. About the weak axis, Iy = 6,310 cm⁴ and Wy = 421 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
HEA 300 or HEA 320 — what does one size up change?
HEA 320 is about 11% heavier (97.6 vs 88.3 kg/m) but about 26% stiffer (Ix 22,930 vs 18,260 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