Steel Beam Sizes / Europe / HD Sections / HD 400×421
HD 400×421 Steel Beam Dimensions and Properties
EN HD wide flange columns · v2026.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
HD 400×421 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 | 282.90 lb/ft | 421.00 kg/m |
| Depth, d | 16.73 in | 425.00 mm |
| Flange width, bf | 16.10 in | 409.00 mm |
| tw | 1.291 in | 32.800 mm |
| tf | 2.071 in | 52.600 mm |
| Area | 83.24 in² | 53,700.00 mm² |
| Ix | 3,844.02 in⁴ | 1,600,000,000 mm⁴ |
| Iy | 1,443.91 in⁴ | 601,000,000 mm⁴ |
| Sx | 458.29 in³ | 7,510,000 mm³ |
| Sy | 179.41 in³ | 2,940,000 mm³ |
| Zx | 541.89 in³ | 8,880,000 mm³ |
| Zy | 274.00 in³ | 4,490,000 mm³ |
| rx | 6.77 in | 172.00 mm |
| ry | 4.17 in | 106.00 mm |
| J | 104.27 in⁴ | 43,400,000 mm⁴ |
| Cw | 77,457.06 in⁶ | 20,800,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HD 400×421.
Lighter in HD wide flange columns
HD 400×382
- Weight
- 382.0 kg/m (-9.3%)
- Depth
- 416.0 mm (-2.1%)
- Ix
- 1,410,000,000 mm⁴ (-12%)
Heavier in HD wide flange columns
HD 400×463
- Weight
- 463.0 kg/m (+10.0%)
- Depth
- 435.0 mm (+2.4%)
- Ix
- 1,800,000,000 mm⁴ (+13%)
Closest Iₓ in HD wide flange columns
HD 400×347
- Weight
- 347.0 kg/m (-18%)
- Depth
- 407.0 mm (-4.2%)
- Ix
- 1,250,000,000 mm⁴ (-22%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Eurocode 3 - UK National Annex · Methodology