Steel Beam Sizes / Europe / IPN Sections / IPN 400
IPN 400 Dimensions, Weight and Section Properties
EN IPN taper flange beams · v2026.1
IPN 400: 400 mm depth, 155 mm flange width, 92.4 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
IPN 400 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 | 62.09 lb/ft | 92.40 kg/m |
| Depth, d | 15.75 in | 400.00 mm |
| Flange width, bf | 6.10 in | 155.00 mm |
| tw | 0.567 in | 14.400 mm |
| tf | 0.850 in | 21.600 mm |
| Area | 18.24 in² | 11,770.00 mm² |
| Ix | 701.77 in⁴ | 292,100,000 mm⁴ |
| Iy | 27.87 in⁴ | 11,600,000 mm⁴ |
| Sx | 89.09 in³ | 1,460,000 mm³ |
| Sy | 9.09 in³ | 149,000.00 mm³ |
| Zx | 104.59 in³ | 1,714,000 mm³ |
| Zy | 15.44 in³ | 253,000.00 mm³ |
| rx | 6.18 in | 157.00 mm |
| ry | 1.22 in | 31.00 mm |
| J | 4.08 in⁴ | 1,700,000 mm⁴ |
| Cw | 1,564.04 in⁶ | 420,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus IPN 400.
Lighter in IPN taper flange beams
IPN 380
- Weight
- 84.0 kg/m (-9.1%)
- Depth
- 380.0 mm (-5.0%)
- Ix
- 240,100,000 mm⁴ (-18%)
Heavier in IPN taper flange beams
IPN 450
- Weight
- 115.0 kg/m (+24%)
- Depth
- 450.0 mm (+13%)
- Ix
- 458,500,000 mm⁴ (+57%)
Another Iₓ option in IPN taper flange beams
IPN 360
- Weight
- 76.1 kg/m (-18%)
- Depth
- 360.0 mm (-10.0%)
- Ix
- 196,100,000 mm⁴ (-33%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · EN 10365:2017 · Methodology