HEA 120 weight and dimensions
19.89 kg/m · 13.37 lb/ft
HEA 120 is a 114 mm deep beam with a 120 mm flange, 5 mm web and 8 mm flange thickness. It weighs 19.89 kg per metre (13.37 lb/ft). It belongs to the HEA wide flange beam series, European (EN).
HEA 120 weight calculator
Weight of standard lengths
| Pieces | 6 m each (kg) | 12 m each (kg) |
|---|---|---|
| 1 | 119.3 | 238.7 |
| 5 | 596.7 | 1,193.4 |
| 10 | 1,193.4 | 2,386.8 |
| 20 | 2,386.8 | 4,773.6 |
| 50 | 5,967.0 | 11,934.0 |
Pieces per tonne
| 6 m lengths per metric tonne | 8.4 |
| 12 m lengths per metric tonne | 4.2 |
| Length per tonne | 50.3 m |
Useful for converting a tonnage order into a number of bars.
Surface area for painting
| Per metre of length | 0.677 m²/m |
| Per foot of length | 2.22 ft²/ft |
| Per tonne of steel | 34.1 m²/t |
| A 12 m length | 8.13 m² |
Outside perimeter × length, all faces, calculated from the dimensions. Use it to estimate paint, primer, fireproofing or galvanizing quantities.
Cross-section
Drawn to scale. Dimensions in mm.
Dimensions
| Depth h | 114 mm | 4.488 in |
| Flange width b | 120 mm | 4.724 in |
| Web thickness tw | 5 mm | 0.197 in |
| Flange thickness tf | 8 mm | 0.315 in |
| Root radius r | 12 mm | 0.472 in |
| Mass | 19.89 kg/m | 13.37 lb/ft |
Section properties
| Property | Value | Unit |
|---|---|---|
| Area | 25.34 | cm² |
| Moment of inertia Ix | 606 | cm⁴ |
| Moment of inertia Iy | 231 | cm⁴ |
| Elastic modulus Zx | 106 | cm³ |
| Elastic modulus Zy | 38.47 | cm³ |
| Radius of gyration rx | 4.89 | cm |
| Radius of gyration ry | 3.02 | cm |
Equivalent sections in other standards
The closest sections by depth and weight. They are not direct substitutes: check bending, buckling and connection details before swapping one for another.
HEA 120 and its closest equivalents, drawn over each other at the same scale.
| Section | Standard | Depth (mm) | kg/m | Weight vs HEA 120 |
|---|---|---|---|---|
| HEA 120 | EN | 114 | 19.89 | — |
| ISMB 125 | IS | 125 | 13.35 | -32.9% |
| W4x13 | AISC | 106 | 19.30 | -3.0% |
| W5x16 | AISC | 127 | 23.80 | +19.7% |
HEA series weights
Next lighter: HEA 100 (16.67 kg/m). Next heavier: HEA 140 (24.66 kg/m).
Stiffness and strength per kilogram
The elastic section modulus Zx governs bending strength. Dividing it by the weight shows how efficiently each size uses its steel: higher is better when weight is the cost driver.
| Section | kg/m | Ix (cm⁴) | Zx (cm³) | Zx per kg/m |
|---|---|---|---|---|
| HEA 100 | 16.67 | 349 | 72.8 | 4.36 |
| HEA 120 | 19.89 | 606 | 106.3 | 5.35 |
| HEA 140 | 24.66 | 1,033 | 155.4 | 6.30 |
| HEA 160 | 30.44 | 1,673 | 220.1 | 7.23 |
| HEA 180 | 35.52 | 2,510 | 293.6 | 8.27 |
Full table: HEA beam weight chart (PDF).
How the weight is calculated
Mass per metre = cross-sectional area × density of steel = 25.34 cm² × 0.785 kg/(cm²·m) = 19.89 kg/m.
Rolled sections are made to a nominal mass, and the actual mass can differ by a few percent within the tolerances of EN 10034 (I and H sections) or EN 10279 (channels). For purchasing, invoicing by weight or checking deliveries, use the producer's stated mass.
Typical uses
Wide flange sections like this are used as columns, heavy beams and transfer girders, where stiffness about both axes matters.
Frequently asked questions
What is the weight of HEA 120 per metre?
HEA 120 weighs 19.89 kg/m, which is 13.37 lb/ft.
How much does a 6 m or 12 m length of HEA 120 weigh?
A 6 m length weighs about 119.3 kg and a 12 m length about 238.7 kg.
What is the equivalent of HEA 120 in other standards?
By depth and weight the closest match is ISMB 125 (13.35 kg/m, 125 mm deep). Check section properties before substituting one for the other.
Source: EN 10365. Values are nominal; verify with the producer before ordering.