Steel Beam Sizes / Europe / HD Sections / HD 400×634
HD 400×634 Dimensions, Weight and Section Properties
EN HD wide flange columns · v2026.1
HD 400×634: 474 mm depth, 424 mm flange width, 634 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
HD 400×634 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 | 426.03 lb/ft | 634.00 kg/m |
| Depth, d | 18.66 in | 474.00 mm |
| Flange width, bf | 16.69 in | 424.00 mm |
| tw | 1.874 in | 47.600 mm |
| tf | 3.035 in | 77.100 mm |
| Area | 125.24 in² | 80,800.00 mm² |
| Ix | 6,582.88 in⁴ | 2,740,000,000 mm⁴ |
| Iy | 2,359.26 in⁴ | 982,000,000 mm⁴ |
| Sx | 707.88 in³ | 11,600,000 mm³ |
| Sy | 282.54 in³ | 4,630,000 mm³ |
| Zx | 866.54 in³ | 14,200,000 mm³ |
| Zy | 434.49 in³ | 7,120,000 mm³ |
| rx | 7.24 in | 184.00 mm |
| ry | 4.33 in | 110.00 mm |
| J | 331.55 in⁴ | 138,000,000 mm⁴ |
| Cw | 143,742.44 in⁶ | 38,600,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus HD 400×634.
Lighter in HD wide flange columns
HD 400×592
- Weight
- 592.0 kg/m (-6.6%)
- Depth
- 465.0 mm (-1.9%)
- Ix
- 2,500,000,000 mm⁴ (-8.8%)
Heavier in HD wide flange columns
HD 400×677
- Weight
- 677.0 kg/m (+6.8%)
- Depth
- 483.0 mm (+1.9%)
- Ix
- 3,000,000,000 mm⁴ (+9.5%)
Another Iₓ option in HD wide flange columns
HD 400×551
- Weight
- 551.0 kg/m (-13%)
- Depth
- 455.0 mm (-4.0%)
- Ix
- 2,260,000,000 mm⁴ (-18%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Eurocode 3 - UK National Annex · Methodology