StructureCalcsIPN 550
European Standard I-Beam (IPN) · EN 10365 · Europe
IPN 550 is a European taper-flange I-beam 550.0 mm deep with a 200.0 mm wide flange, weighing 167.0 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.
Analyse this section, or combine it with plates and other shapes.
Open IPN 550 in the Section CalculatorFree, no sign-up, runs in your browser.
Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 550.0 mm | 21.65 in |
| Flange width, bf | 200.0 mm | 7.87 in |
| Flange thickness, tf | 30.0 mm | 1.181 in |
| Web thickness, tw | 19.0 mm | 0.748 in |
| Mass per metre | 167.0 kg/m | 112.2 lb/ft |
| Area, A | 21,300 mm² | 33.02 in² |
| Second moment, Ix | 991,800,000 mm⁴ | 2,382.8 in⁴ |
| Second moment, Iy | 33,200,000 mm⁴ | 79.8 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 550 the computed area agrees with the published value to 0.68% and Ix to 1.22%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Wel,x | 3,650,656 mm³ |
| Elastic modulus, Wel,y | 356,992 mm³ |
| Plastic modulus, Wpl,x | 4,288,320 mm³ |
| Plastic modulus, Wpl,y | 604,018 mm³ |
| Radius of gyration, rx | 216.4 mm |
| Radius of gyration, ry | 40.8 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