Steel Beam Sizes / Europe / HD Sections / HD 400×509
HD 400×509 Dimensions, Weight and Section Properties
EN HD wide flange columns · v2026.1
HD 400×509: 446 mm depth, 416 mm flange width, 509 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
HD 400×509 dimensions
Not to scale. Dimensions shown for reference.
Section properties
Symbols match the steel section finder. Imperial and metric values are shown side by side.
| Property | Imperial | Metric |
|---|---|---|
| Weight | 342.03 lb/ft | 509.00 kg/m |
| Depth, d | 17.56 in | 446.00 mm |
| Flange width, bf | 16.38 in | 416.00 mm |
| tw | 1.539 in | 39.100 mm |
| tf | 2.469 in | 62.700 mm |
| Area | 100.60 in² | 64,900.00 mm² |
| Ix | 4,901.12 in⁴ | 2,040,000,000 mm⁴ |
| Iy | 1,811.49 in⁴ | 754,000,000 mm⁴ |
| Sx | 559.59 in³ | 9,170,000 mm³ |
| Sy | 220.91 in³ | 3,620,000 mm³ |
| Zx | 671.26 in³ | 11,000,000 mm³ |
| Zy | 338.68 in³ | 5,550,000 mm³ |
| rx | 7.01 in | 178.00 mm |
| ry | 4.25 in | 108.00 mm |
| J | 177.55 in⁴ | 73,900,000 mm⁴ |
| Cw | 102,779.57 in⁶ | 27,600,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus HD 400×509.
Lighter in HD wide flange columns
HD 400×463
- Weight
- 463.0 kg/m (-9.0%)
- Depth
- 435.0 mm (-2.5%)
- Ix
- 1,800,000,000 mm⁴ (-12%)
Heavier in HD wide flange columns
HD 400×551
- Weight
- 551.0 kg/m (+8.3%)
- Depth
- 455.0 mm (+2.0%)
- Ix
- 2,260,000,000 mm⁴ (+11%)
Another Iₓ option in HD wide flange columns
HD 400×421
- Weight
- 421.0 kg/m (-17%)
- Depth
- 425.0 mm (-4.7%)
- Ix
- 1,600,000,000 mm⁴ (-22%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Eurocode 3 - UK National Annex · Methodology