Steel Beam Sizes / Europe / HE Sections / HE 120 B
HE 120 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 120 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 | 17.94 lb/ft | 26.70 kg/m |
| Depth, d | 4.72 in | 120.00 mm |
| Flange width, bf | 4.72 in | 120.00 mm |
| tw | 0.256 in | 6.500 mm |
| tf | 0.433 in | 11.000 mm |
| Area | 5.27 in² | 3,400.00 mm² |
| Ix | 20.76 in⁴ | 8,640,000 mm⁴ |
| Iy | 7.64 in⁴ | 3,180,000 mm⁴ |
| Sx | 8.79 in³ | 144,000.00 mm³ |
| Sy | 3.23 in³ | 53,000.00 mm³ |
| Zx | 10.07 in³ | 165,000.00 mm³ |
| Zy | 4.94 in³ | 81,000.00 mm³ |
| rx | 1.98 in | 50.40 mm |
| ry | 1.20 in | 30.60 mm |
| J | 0.33 in⁴ | 139,000.00 mm⁴ |
| Cw | 35.04 in⁶ | 9,410,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HE 120 B.
Lighter in HE wide flange sections
HE 140 A
- Weight
- 24.7 kg/m (-7.5%)
- Depth
- 133.0 mm (+11%)
- Ix
- 10,300,000 mm⁴ (+19%)
Heavier in HE wide flange sections
HE 180 AA
- Weight
- 28.7 kg/m (+7.5%)
- Depth
- 167.0 mm (+39%)
- Ix
- 19,700,000 mm⁴ (+128%)
Closest Iₓ in HE wide flange sections
HE 100 C
- Weight
- 30.9 kg/m (+16%)
- Depth
- 110.0 mm (-8.3%)
- Ix
- 7,590,000 mm⁴ (-12%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Eurocode 3 - UK National Annex · Methodology