Steel Beam Sizes / Europe / HE Sections / HE 340 M
HE 340 M 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 M 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 | 166.65 lb/ft | 248.00 kg/m |
| Depth, d | 14.84 in | 377.00 mm |
| Flange width, bf | 12.17 in | 309.00 mm |
| tw | 0.827 in | 21.000 mm |
| tf | 1.575 in | 40.000 mm |
| Area | 48.98 in² | 31,600.00 mm² |
| Ix | 1,835.52 in⁴ | 764,000,000 mm⁴ |
| Iy | 473.29 in⁴ | 197,000,000 mm⁴ |
| Sx | 247.15 in³ | 4,050,000 mm³ |
| Sy | 78.11 in³ | 1,280,000 mm³ |
| Zx | 288.03 in³ | 4,720,000 mm³ |
| Zy | 119.00 in³ | 1,950,000 mm³ |
| rx | 6.14 in | 156.00 mm |
| ry | 3.11 in | 79.00 mm |
| J | 36.28 in⁴ | 15,100,000 mm⁴ |
| Cw | 20,779.35 in⁶ | 5,580,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HE 340 M.
Lighter in HE wide flange sections
HE 320 M
- Weight
- 245.0 kg/m (-1.2%)
- Depth
- 359.0 mm (-4.8%)
- Ix
- 681,000,000 mm⁴ (-11%)
Heavier in HE wide flange sections
HE 1000×249
- Weight
- 249.0 kg/m (+0.4%)
- Depth
- 980.0 mm (+160%)
- Ix
- 4,810,000,000 mm⁴ (+530%)
Closest Iₓ in HE wide flange sections
HE 450 B
- Weight
- 171.0 kg/m (-31%)
- Depth
- 450.0 mm (+19%)
- Ix
- 799,000,000 mm⁴ (+4.6%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Eurocode 3 - UK National Annex · Methodology