HEB 120 beam: weight per metre and dimensions
HEB 120 weighs 26.7 kg per metre. A 6 m bar is 160.2 kg, a 12 m bar 320.4 kg, and a tonne is about 37.5 m of this section. Nominal values to EN 10365: depth 120 mm, flange width 120 mm.
Another length or a whole order: the beam weight calculator opens with HEB 120 already selected.
HEB 120 dimensions
| Dimension | Symbol | Value |
|---|---|---|
| Depth | h | 120 mm |
| Flange width | b | 120 mm |
| Web thickness | tw | 6.5 mm |
| Flange thickness | tf | 11 mm |
| Root radius | r | 12 mm |
| Cross-section area | A | 34 cm² |
| Mass per metre | G | 26.7 kg/m |
A delivered bar may differ from these nominal values within the rolling tolerances of EN 10034; invoicing goes by the mill certificate, not by the table.
HEB 120 weight by length
| Length, m | Mass, kg |
|---|---|
| 1 | 26.7 |
| 2 | 53.4 |
| 3 | 80.1 |
| 4 | 106.8 |
| 5 | 133.5 |
| 6 | 160.2 |
| 8 | 213.6 |
| 10 | 267 |
| 12 | 320.4 |
Steel cost is mass times the price per kilogram: at a price C per kg a 12 m bar costs 320.4 × C and a 6 m bar 160.2 × C. Cutting, drilling and painting are priced separately; paint goes by surface area, not by weight.
HEB 120 section properties
| Property | Symbol | Value |
|---|---|---|
| Second moment of area, major axis | Iy | 864.3 cm⁴ |
| Elastic section modulus, major axis | Wel,y | 144 cm³ |
| Radius of gyration, major axis | iy | 5.04 cm |
| Second moment of area, minor axis | Iz | 317.5 cm⁴ |
| Elastic section modulus, minor axis | Wel,z | 52.92 cm³ |
Iy governs deflection, Wel,y bending stress, iy the slenderness of a strut. Iy / Iz = 2.7: in vertical bending the section is 2.7 times stiffer than sideways. Source: ArcelorMittal catalogue “Sections and Merchant Bars” (2023), each value checked against a second, independent table. These are inputs for a check to EN 1993-1-1, not a load capacity.
HEB 120 next to neighbouring sizes
| Section | h, mm | b, mm | kg/m | Iy, cm⁴ |
|---|---|---|---|---|
| HEB 100 | 100 | 100 | 20.4 | 449.5 |
| HEB 120 | 120 | 120 | 26.7 | 864.3 |
| HEB 140 | 140 | 140 | 33.7 | 1509 |
| IPE 120 | 120 | 64 | 10.4 | 317.7 |
| HEA 120 | 114 | 120 | 19.9 | 606.1 |
| UPN 120 | 120 | 55 | 13.4 | 364 |
Against HEB 120 at the same number: IPE 120 — mass ×0.4, Iy ×0.4; HEA 120 — mass ×0.7, Iy ×0.7; UPN 120 — mass ×0.5, Iy ×0.4. One size up, HEB 140 adds 26 % mass and 75 % Iy.
Other sizes
- IPE beams: IPE 100 · IPE 120 · IPE 140 · IPE 160 · IPE 180 · IPE 200 · IPE 220 · IPE 240 · IPE 270 · IPE 300
- HEA beams: HEA 100 · HEA 120 · HEA 140 · HEA 160 · HEA 180 · HEA 200 · HEA 220 · HEA 240 · HEA 260 · HEA 280 · HEA 300
- HEB beams: HEB 100 · HEB 120 · HEB 140 · HEB 160 · HEB 180 · HEB 200 · HEB 220 · HEB 240 · HEB 260 · HEB 280 · HEB 300
- UPN channels: UPN 100 · UPN 120 · UPN 140 · UPN 160 · UPN 180 · UPN 200 · UPN 220 · UPN 240 · UPN 260 · UPN 280 · UPN 300
Frequently asked questions
How much does a 6 m and a 12 m HEB 120 weigh?
HEB 120 weighs 26.7 kg/m, so a 6 m bar is 160.2 kg and a 12 m bar 320.4 kg. Ten 12 m bars come to 3204 kg.
Which is heavier: IPE 120, HEA 120, HEB 120 or UPN 120?
Per metre: HEB 120 — 26.7 kg/m (h 120 mm); HEA 120 — 19.9 kg/m (h 114 mm); UPN 120 — 13.4 kg/m (h 120 mm); IPE 120 — 10.4 kg/m (h 120 mm). The wide-flange HE sections carry load in both planes and go into columns; IPE is the lighter floor beam for bending in one plane.
What does 120 mean in HEB 120?
The nominal depth in millimetres: HEB 120 is 120 mm deep with a 120 mm flange. The letters give the series: HEB, a standard wide-flange beam.
How many metres of HEB 120 are in a tonne?
37.5 m: 1000 kg / 26.7 kg/m. That is about 6.2 bars of 6 m or 3.1 bars of 12 m.
Does S235 or S355 steel change the weight of HEB 120?
No. The table mass is the cross-section area times the density of steel, 7850 kg/m³: 34 cm² × 0.785 = 26.69 kg/m. The grade to EN 10025-2 sets strength, not density. A real bar differs from nominal only within the rolling tolerances of EN 10034.
Updated: