StructureCalcsIPN 320
European Standard I-Beam (IPN) · EN 10365 · Europe
IPN 320 is a European taper-flange I-beam 320.0 mm deep with a 131.0 mm wide flange, weighing 61.1 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 | 320.0 mm | 12.60 in |
| Flange width, bf | 131.0 mm | 5.16 in |
| Flange thickness, tf | 17.3 mm | 0.681 in |
| Web thickness, tw | 11.5 mm | 0.453 in |
| Mass per metre | 61.1 kg/m | 41.1 lb/ft |
| Area, A | 7,780 mm² | 12.06 in² |
| Second moment, Ix | 125,100,000 mm⁴ | 300.6 in⁴ |
| Second moment, Iy | 5,550,000 mm⁴ | 13.3 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 320 the computed area agrees with the published value to 1.12% and Ix to 1.44%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Wel,x | 793,111 mm³ |
| Elastic modulus, Wel,y | 86,923 mm³ |
| Plastic modulus, Wpl,x | 926,275 mm³ |
| Plastic modulus, Wpl,y | 146,687 mm³ |
| Radius of gyration, rx | 127.0 mm |
| Radius of gyration, ry | 26.9 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