HEM 450 — Dimensions, Weight & Section Properties
HEM heavy wide-flange beam per EN 10365 (DIN 1025-4)
HEM 450 is a HEM heavy wide-flange beam per EN 10365 (DIN 1025-4), 478 mm tall and 307 mm wide, weighing 263 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 | 478 mm |
| Flange width b | 307 mm |
| Web thickness tₘ | 21 mm |
| Flange thickness tᶠ | 40 mm |
| Root radius r | 27 mm |
Weight & Cross-Section
| Weight per meter | 263 kg/m |
| Weight of a 6 m bar | 1,578 kg |
| Weight of a 12 m bar | 3,156 kg |
| Cross-section area A | 335.4 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 131,500 cm⁴ |
| Section modulus Wₓ | 5,501 cm³ |
| Radius of gyration iₓ | 19.8 cm |
| Moment of inertia Iᵧ | 19,340 cm⁴ |
| Section modulus Wᵧ | 1,260 cm³ |
| Radius of gyration iᵧ | 7.59 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|---|---|---|---|---|---|
| HEM 400 | 432 × 307 | 256 | 104,100 | 4,820 | −3 % | −21 % |
| HEM 450 (this page) | 478 × 307 | 263 | 131,500 | 5,501 | — | — |
| HEM 500 | 524 × 306 | 270 | 161,900 | 6,180 | +3 % | +23 % |
Deflection example
A simply supported HEM 450 spanning 10 m with a 10 kN point load at midspan deflects 0.75 mm (E = 210 GPa, Ix = 131,500 cm⁴). The L/360 serviceability limit for this span is 27.8 mm — the profile passes this quick check.
Calculate your own span and load →
Frequently Asked Questions
How much does HEM 450 weigh?
HEM 450 weighs 263 kg per meter. A standard 6 m bar weighs 1,578 kg and a 12 m bar 3,156 kg. The weight follows from the cross-section area of 335.4 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of HEM 450?
HEM 450 is 478 mm tall and 307 mm wide, with a web thickness of 21 mm, a flange thickness of 40 mm, and a root radius of 27 mm, per EN 10365 (DIN 1025-4).
What is the moment of inertia of HEM 450?
About the strong axis, Ix = 131,500 cm⁴ with a section modulus Wx = 5,501 cm³. About the weak axis, Iy = 19,340 cm⁴ and Wy = 1,260 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
HEM 450 or HEM 500 — what does one size up change?
HEM 500 is about 3% heavier (270 vs 263 kg/m) but about 23% stiffer (Ix 161,900 vs 131,500 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