StructureCalcsHD 400 x 509
Wide-Flange Column (HD) · EN 10365 · Europe
HD 400 x 509 is a heavy wide-flange column section 446.0 mm deep with a 416.0 mm wide flange, weighing 509.4 kg/m. The dimensions below are the published EN 10365 values; the drawing is generated from them.
HD sections are heavy wide-flange columns rolled for high-rise and transfer work, extending the HE family upward.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 446.0 mm | 17.56 in |
| Flange width, bf | 416.0 mm | 16.38 in |
| Flange thickness, tf | 62.7 mm | 2.469 in |
| Web thickness, tw | 39.1 mm | 1.539 in |
| Mass per metre | 509.4 kg/m | 342.3 lb/ft |
| Area, A | 64,895 mm² | 100.59 in² |
| Second moment, Ix | 2,045,280,000 mm⁴ | 4,913.8 in⁴ |
| Second moment, Iy | 754,100,000 mm⁴ | 1,811.7 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 HD 400 x 509 the computed area agrees with the published value to better than 0.01% and Ix to better than 0.01%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Wel,x | 9,171,648 mm³ |
| Elastic modulus, Wel,y | 3,625,043 mm³ |
| Plastic modulus, Wpl,x | 11,032,721 mm³ |
| Plastic modulus, Wpl,y | 5,552,263 mm³ |
| Radius of gyration, rx | 177.5 mm |
| Radius of gyration, ry | 107.8 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