HEM 120 — Dimensions, Weight & Section Properties
HEM heavy wide-flange beam per EN 10365 (DIN 1025-4)
HEM 120 is a HEM heavy wide-flange beam per EN 10365 (DIN 1025-4), 140 mm tall and 126 mm wide, weighing 52.1 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 | 140 mm |
| Flange width b | 126 mm |
| Web thickness tₘ | 12.5 mm |
| Flange thickness tᶠ | 21 mm |
| Root radius r | 12 mm |
Weight & Cross-Section
| Weight per meter | 52.1 kg/m |
| Weight of a 6 m bar | 312.6 kg |
| Weight of a 12 m bar | 625.2 kg |
| Cross-section area A | 66.4 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 2,018 cm⁴ |
| Section modulus Wₓ | 288 cm³ |
| Radius of gyration iₓ | 5.51 cm |
| Moment of inertia Iᵧ | 703 cm⁴ |
| Section modulus Wᵧ | 112 cm³ |
| Radius of gyration iᵧ | 3.25 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|---|---|---|---|---|---|
| HEM 100 | 120 × 106 | 41.8 | 1,143 | 190 | −20 % | −43 % |
| HEM 120 (this page) | 140 × 126 | 52.1 | 2,018 | 288 | — | — |
| HEM 140 | 160 × 146 | 63.2 | 3,291 | 411 | +21 % | +63 % |
Deflection example
A simply supported HEM 120 spanning 3 m with a 10 kN point load at midspan deflects 1.33 mm (E = 210 GPa, Ix = 2,018 cm⁴). The L/360 serviceability limit for this span is 8.3 mm — the profile passes this quick check.
Calculate your own span and load →
Frequently Asked Questions
How much does HEM 120 weigh?
HEM 120 weighs 52.1 kg per meter. A standard 6 m bar weighs 312.6 kg and a 12 m bar 625.2 kg. The weight follows from the cross-section area of 66.4 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of HEM 120?
HEM 120 is 140 mm tall and 126 mm wide, with a web thickness of 12.5 mm, a flange thickness of 21 mm, and a root radius of 12 mm, per EN 10365 (DIN 1025-4).
What is the moment of inertia of HEM 120?
About the strong axis, Ix = 2,018 cm⁴ with a section modulus Wx = 288 cm³. About the weak axis, Iy = 703 cm⁴ and Wy = 112 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
HEM 120 or HEM 140 — what does one size up change?
HEM 140 is about 21% heavier (63.2 vs 52.1 kg/m) but about 63% stiffer (Ix 3,291 vs 2,018 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