Steel Beam Sizes / Europe / HE Sections / HE 340 B
HE 340 B Steel Beam Dimensions and Properties
EN HE wide flange sections · v2026.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
HE 340 B 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 | 90.04 lb/ft | 134.00 kg/m |
| Depth, d | 13.39 in | 340.00 mm |
| Flange width, bf | 11.81 in | 300.00 mm |
| tw | 0.472 in | 12.000 mm |
| tf | 0.846 in | 21.500 mm |
| Area | 26.51 in² | 17,100.00 mm² |
| Ix | 881.72 in⁴ | 367,000,000 mm⁴ |
| Iy | 232.80 in⁴ | 96,900,000 mm⁴ |
| Sx | 131.81 in³ | 2,160,000 mm³ |
| Sy | 39.42 in³ | 646,000.00 mm³ |
| Zx | 147.07 in³ | 2,410,000 mm³ |
| Zy | 60.17 in³ | 986,000.00 mm³ |
| rx | 5.79 in | 147.00 mm |
| ry | 2.96 in | 75.30 mm |
| J | 6.32 in⁴ | 2,630,000 mm⁴ |
| Cw | 9,123.55 in⁶ | 2,450,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HE 340 B.
Lighter in HE wide flange sections
HE 260 C
- Weight
- 132.0 kg/m (-1.5%)
- Depth
- 275.0 mm (-19%)
- Ix
- 226,000,000 mm⁴ (-38%)
Heavier in HE wide flange sections
HE 650 AA
- Weight
- 138.0 kg/m (+3.0%)
- Depth
- 620.0 mm (+82%)
- Ix
- 1,140,000,000 mm⁴ (+211%)
Closest Iₓ in HE wide flange sections
HE 280 M
- Weight
- 189.0 kg/m (+41%)
- Depth
- 310.0 mm (-8.8%)
- Ix
- 396,000,000 mm⁴ (+7.9%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Eurocode 3 - UK National Annex · Methodology