HEB 300 — Dimensions, Weight & Section Properties
HEB wide-flange beam per EN 10365 (DIN 1025-2)
HEB 300 is a HEB wide-flange beam per EN 10365 (DIN 1025-2), 300 mm tall and 300 mm wide, weighing 117 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.
HEB 300: cross-section drawn to scale from the tabulated dimensions (h 300, b 300, tw 11, tf 19, r 27 mm)Dimensions (mm)
| Height h | 300 mm |
| Flange width b | 300 mm |
| Web thickness tₘ | 11 mm |
| Flange thickness tᶠ | 19 mm |
| Root radius r | 27 mm |
Weight & Cross-Section
| Weight per meter | 117 kg/m |
| Weight of a 6 m bar | 702 kg |
| Weight of a 12 m bar | 1,404 kg |
| Cross-section area A | 149 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 25,170 cm⁴ |
| Section modulus Wₓ | 1,678 cm³ |
| Radius of gyration iₓ | 13 cm |
| Moment of inertia Iᵧ | 8,563 cm⁴ |
| Section modulus Wᵧ | 571 cm³ |
| Radius of gyration iᵧ | 7.58 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|
| HEB 280 | 280 × 280 | 103 | 19,270 | 1,376 | −12 % | −23 % |
| HEB 300 (this page) | 300 × 300 | 117 | 25,170 | 1,678 | — | — |
| HEB 320 | 320 × 300 | 127 | 30,820 | 1,926 | +9 % | +22 % |
Deflection example
A simply supported HEB 300 spanning 6 m with a 10 kN point load at midspan deflects 0.85 mm (E = 210 GPa, Ix = 25,170 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 300 weigh?
HEB 300 weighs 117 kg per meter. A standard 6 m bar weighs 702 kg and a 12 m bar 1,404 kg. The weight follows from the cross-section area of 149 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of HEB 300?
HEB 300 is 300 mm tall and 300 mm wide, with a web thickness of 11 mm, a flange thickness of 19 mm, and a root radius of 27 mm, per EN 10365 (DIN 1025-2).
What is the moment of inertia of HEB 300?
About the strong axis, Ix = 25,170 cm⁴ with a section modulus Wx = 1,678 cm³. About the weak axis, Iy = 8,563 cm⁴ and Wy = 571 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
HEB 300 or HEB 320 — what does one size up change?
HEB 320 is about 9% heavier (127 vs 117 kg/m) but about 22% stiffer (Ix 30,820 vs 25,170 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