HEM 320 — Dimensions, Weight & Section Properties
HEM heavy wide-flange beam per EN 10365 (DIN 1025-4)
HEM 320 is a HEM heavy wide-flange beam per EN 10365 (DIN 1025-4), 359 mm tall and 309 mm wide, weighing 245 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.
HEM 320: cross-section drawn to scale from the tabulated dimensions (h 359, b 309, tw 21, tf 40, r 27 mm)Dimensions (mm)
| Height h | 359 mm |
| Flange width b | 309 mm |
| Web thickness tₘ | 21 mm |
| Flange thickness tᶠ | 40 mm |
| Root radius r | 27 mm |
Weight & Cross-Section
| Weight per meter | 245 kg/m |
| Weight of a 6 m bar | 1,470 kg |
| Weight of a 12 m bar | 2,940 kg |
| Cross-section area A | 312 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 68,130 cm⁴ |
| Section modulus Wₓ | 3,796 cm³ |
| Radius of gyration iₓ | 14.8 cm |
| Moment of inertia Iᵧ | 19,710 cm⁴ |
| Section modulus Wᵧ | 1,276 cm³ |
| Radius of gyration iᵧ | 7.95 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|
| HEM 300 | 340 × 310 | 238 | 59,200 | 3,482 | −3 % | −13 % |
| HEM 320 (this page) | 359 × 309 | 245 | 68,130 | 3,796 | — | — |
| HEM 340 | 377 × 309 | 248 | 76,370 | 4,052 | +1 % | +12 % |
Deflection example
A simply supported HEM 320 spanning 7 m with a 10 kN point load at midspan deflects 0.5 mm (E = 210 GPa, Ix = 68,130 cm⁴). The L/360 serviceability limit for this span is 19.4 mm — the profile passes this quick check.
Calculate your own span and load →
Frequently Asked Questions
How much does HEM 320 weigh?
HEM 320 weighs 245 kg per meter. A standard 6 m bar weighs 1,470 kg and a 12 m bar 2,940 kg. The weight follows from the cross-section area of 312 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of HEM 320?
HEM 320 is 359 mm tall and 309 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 320?
About the strong axis, Ix = 68,130 cm⁴ with a section modulus Wx = 3,796 cm³. About the weak axis, Iy = 19,710 cm⁴ and Wy = 1,276 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
HEM 320 or HEM 340 — what does one size up change?
HEM 340 is about 1% heavier (248 vs 245 kg/m) but about 12% stiffer (Ix 76,370 vs 68,130 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