StructureCalcsIPN 120
European Standard I-Beam (IPN) · EN 10365 · Europe
IPN 120 is a European taper-flange I-beam 120.0 mm deep with a 58.0 mm wide flange, weighing 11.1 kg/m. The dimensions below are the published EN 10365 values; the drawing is generated from them.
IPN beams are the classic European taper-flange I — a legacy series still rolled, with the 14% flange taper reproduced in the drawing.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 120.0 mm | 4.72 in |
| Flange width, bf | 58.0 mm | 2.28 in |
| Flange thickness, tf | 7.7 mm | 0.303 in |
| Web thickness, tw | 5.1 mm | 0.201 in |
| Mass per metre | 11.1 kg/m | 7.5 lb/ft |
| Area, A | 1,420 mm² | 2.20 in² |
| Second moment, Ix | 3,280,000 mm⁴ | 7.9 in⁴ |
| Second moment, Iy | 215,000 mm⁴ | 0.5 in⁴ |
Derived section properties
Integrated from the section's own outline including the root and toe radii, whose arcs are integrated analytically rather than approximated by facets. For IPN 120 the computed area agrees with the published value to 1.18% and Ix to 1.29%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Wel,x | 55,372 mm³ |
| Elastic modulus, Wel,y | 7,577 mm³ |
| Plastic modulus, Wpl,x | 64,514 mm³ |
| Plastic modulus, Wpl,y | 12,656 mm³ |
| Radius of gyration, rx | 48.1 mm |
| Radius of gyration, ry | 12.4 mm |
Wel is the elastic modulus and Wpl the plastic modulus, following Eurocode 3 notation.
Neighbouring sizes
Where these numbers come from
Published EN 10365 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API