HEA 320 — Dimensions, Weight & Section Properties
HEA wide-flange beam per EN 10365 (DIN 1025-3)
HEA 320 is a HEA wide-flange beam per EN 10365 (DIN 1025-3), 310 mm tall and 300 mm wide, weighing 97.6 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 | 310 mm |
| Flange width b | 300 mm |
| Web thickness tₘ | 9 mm |
| Flange thickness tᶠ | 15.5 mm |
| Root radius r | 27 mm |
Weight & Cross-Section
| Weight per meter | 97.6 kg/m |
| Weight of a 6 m bar | 585.6 kg |
| Weight of a 12 m bar | 1,171.2 kg |
| Cross-section area A | 124 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 22,930 cm⁴ |
| Section modulus Wₓ | 1,479 cm³ |
| Radius of gyration iₓ | 13.6 cm |
| Moment of inertia Iᵧ | 6,985 cm⁴ |
| Section modulus Wᵧ | 466 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 300 | 290 × 300 | 88.3 | 18,260 | 1,260 | −10 % | −20 % |
| HEA 320 (this page) | 310 × 300 | 97.6 | 22,930 | 1,479 | — | — |
| HEA 340 | 330 × 300 | 105 | 27,690 | 1,678 | +8 % | +21 % |
Deflection example
A simply supported HEA 320 spanning 6 m with a 10 kN point load at midspan deflects 0.93 mm (E = 210 GPa, Ix = 22,930 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 320 weigh?
HEA 320 weighs 97.6 kg per meter. A standard 6 m bar weighs 585.6 kg and a 12 m bar 1,171.2 kg. The weight follows from the cross-section area of 124 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of HEA 320?
HEA 320 is 310 mm tall and 300 mm wide, with a web thickness of 9 mm, a flange thickness of 15.5 mm, and a root radius of 27 mm, per EN 10365 (DIN 1025-3).
What is the moment of inertia of HEA 320?
About the strong axis, Ix = 22,930 cm⁴ with a section modulus Wx = 1,479 cm³. About the weak axis, Iy = 6,985 cm⁴ and Wy = 466 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
HEA 320 or HEA 340 — what does one size up change?
HEA 340 is about 8% heavier (105 vs 97.6 kg/m) but about 21% stiffer (Ix 27,690 vs 22,930 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