IPE 120 weight and dimensions
10.37 kg/m · 6.97 lb/ft
IPE 120 is a 120 mm deep beam with a 64 mm flange, 4.4 mm web and 6.3 mm flange thickness. It weighs 10.37 kg per metre (6.97 lb/ft). It belongs to the IPE European I-beam series, European (EN).
IPE 120 weight calculator
Weight of standard lengths
| Pieces | 6 m each (kg) | 12 m each (kg) |
|---|---|---|
| 1 | 62.2 | 124.4 |
| 5 | 311.1 | 622.2 |
| 10 | 622.2 | 1,244.4 |
| 20 | 1,244.4 | 2,488.8 |
| 50 | 3,111.0 | 6,222.0 |
Pieces per tonne
| 6 m lengths per metric tonne | 16.1 |
| 12 m lengths per metric tonne | 8.0 |
| Length per tonne | 96.4 m |
Useful for converting a tonnage order into a number of bars.
Surface area for painting
| Per metre of length | 0.475 m²/m |
| Per foot of length | 1.56 ft²/ft |
| Per tonne of steel | 45.8 m²/t |
| A 12 m length | 5.70 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 | 120 mm | 4.724 in |
| Flange width b | 64 mm | 2.520 in |
| Web thickness tw | 4.4 mm | 0.173 in |
| Flange thickness tf | 6.3 mm | 0.248 in |
| Root radius r | 7 mm | 0.276 in |
| Mass | 10.37 kg/m | 6.97 lb/ft |
Section properties
| Property | Value | Unit |
|---|---|---|
| Area | 13.21 | cm² |
| Moment of inertia Ix | 318 | cm⁴ |
| Moment of inertia Iy | 27.70 | cm⁴ |
| Elastic modulus Zx | 52.95 | cm³ |
| Elastic modulus Zy | 8.66 | cm³ |
| Radius of gyration rx | 4.90 | cm |
| Radius of gyration ry | 1.45 | 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.
IPE 120 and its closest equivalents, drawn over each other at the same scale.
| Section | Standard | Depth (mm) | kg/m | Weight vs IPE 120 |
|---|---|---|---|---|
| IPE 120 | EN | 120 | 10.37 | — |
| ISMB 125 | IS | 125 | 13.35 | +28.7% |
| S4x7.7 | AISC | 102 | 11.50 | +10.9% |
IPE series weights
Next lighter: IPE 100 (8.1 kg/m). Next heavier: IPE 140 (12.89 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 |
|---|---|---|---|---|
| IPE 80 | 6.00 | 80 | 20.0 | 3.34 |
| IPE 100 | 8.10 | 171 | 34.2 | 4.22 |
| IPE 120 | 10.37 | 318 | 52.9 | 5.11 |
| IPE 140 | 12.89 | 541 | 77.3 | 6.00 |
| IPE 160 | 15.77 | 869 | 108.7 | 6.89 |
| IPE 180 | 18.80 | 1,317 | 146.3 | 7.78 |
Full table: IPE beam weight chart (PDF).
How the weight is calculated
Mass per metre = cross-sectional area × density of steel = 13.21 cm² × 0.785 kg/(cm²·m) = 10.37 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
Beams of this shape are used as floor and roof beams, lintels, crane girders and frame members, where bending about the strong axis governs.
Frequently asked questions
What is the weight of IPE 120 per metre?
IPE 120 weighs 10.37 kg/m, which is 6.97 lb/ft.
How much does a 6 m or 12 m length of IPE 120 weigh?
A 6 m length weighs about 62.2 kg and a 12 m length about 124.4 kg.
What is the equivalent of IPE 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.