Steel Beam Sizes / Europe / HE Sections / HE 300 M
HE 300 M Dimensions, Weight and Section Properties
EN HE wide flange sections · v2026.1
HE 300 M: 340 mm depth, 310 mm flange width, 238 kg/m weight. View the full dimensions and properties in imperial and metric units below.
Need this steel supplied or fabricated?
Request project pricing for delivery in the United States or Canada.
Get a steel quote →Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
HE 300 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 | 159.93 lb/ft | 238.00 kg/m |
| Depth, d | 13.39 in | 340.00 mm |
| Flange width, bf | 12.20 in | 310.00 mm |
| tw | 0.827 in | 21.000 mm |
| tf | 1.535 in | 39.000 mm |
| Area | 46.97 in² | 30,300.00 mm² |
| Ix | 1,422.29 in⁴ | 592,000,000 mm⁴ |
| Iy | 466.09 in⁴ | 194,000,000 mm⁴ |
| Sx | 212.36 in³ | 3,480,000 mm³ |
| Sy | 76.28 in³ | 1,250,000 mm³ |
| Zx | 248.98 in³ | 4,080,000 mm³ |
| Zy | 116.56 in³ | 1,910,000 mm³ |
| rx | 5.51 in | 140.00 mm |
| ry | 3.15 in | 80.00 mm |
| J | 33.88 in⁴ | 14,100,000 mm⁴ |
| Cw | 16,347.91 in⁶ | 4,390,000,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus HE 300 M.
Lighter in HE wide flange sections
HE 650 B
- Weight
- 225.0 kg/m (-5.5%)
- Depth
- 650.0 mm (+91%)
- Ix
- 2,110,000,000 mm⁴ (+256%)
Heavier in HE wide flange sections
HE 700 B
- Weight
- 241.0 kg/m (+1.3%)
- Depth
- 700.0 mm (+106%)
- Ix
- 2,570,000,000 mm⁴ (+334%)
Another Iₓ option in HE wide flange sections
HE 400 B
- Weight
- 155.0 kg/m (-35%)
- Depth
- 400.0 mm (+18%)
- Ix
- 577,000,000 mm⁴ (-2.5%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Eurocode 3 - UK National Annex · Methodology