HE 360 A vs H-350x350x10x16-113
HE 360 A is an HE section from the European (Continental) range; H-350x350x10x16-113 is the closest equivalent in the European (Continental) range. They are close to interchangeable in bending: 2090 cm³ against 2092 cm³ of plastic modulus, a difference of 0.1%. They weigh essentially the same, 112 kg/m and 113 kg/m. Both are about 347 mm deep, so either fits the same construction zone.
| Property | HE 360 A HE | H-350x350x10x16-113 MB & MC | Difference |
|---|---|---|---|
| Mass | 112 kg/m | 113 kg/m | -0.9% |
| Depth | 350 mm | 344 mm | +1.7% |
| Width | 300 mm | 348 mm | -13.8% |
| Web thickness | 10 mm | 10 mm | same |
| Flange thickness | 17.5 mm | 16 mm | +9.4% |
| Area | 143 cm² | 144 cm² | -0.7% |
| Second moment, major (Iy) | 33,100 cm⁴ | 32,850 cm⁴ | +0.8% |
| Plastic modulus, major (Wpl,y) | 2,090 cm³ | 2,092 cm³ | -0.1% |
| Elastic modulus, major (Wel,y) | 1,890 cm³ | 1,910 cm³ | -1.0% |
| Second moment, minor (Iz) | 7,890 cm⁴ | 11,240 cm⁴ | -29.8% |
| Plastic modulus, minor (Wpl,z) | 802 cm³ | 978 cm³ | -18.0% |
| Radius of gyration, minor (iz) | 7.43 cm | 8.84 cm | -16.0% |
| Torsion constant (It) | 153 cm⁴ | 111 cm⁴ | +37.8% |
HE 360 A to EN 10365 · Continental Steel; H-350x350x10x16-113 to Continental Steel. Difference is expressed relative to H-350x350x10x16-113.
How to choose between them
On stiffness, HE 360 A has the larger second moment of area: 33,100 cm⁴ against 32,850 cm⁴, a difference of 0.8%. This matters more often than the strength comparison, because on normal floor spans deflection rather than bending capacity sets the beam size - so if the two are close on modulus but apart on inertia, the stiffer one is usually the better answer even when it is not the stronger one.
Measured as bending capacity per kilogram, the two are equally efficient (18.7 against 18.5 cm³ per kg/m), so on a pure steel-tonnage basis there is nothing to choose between them. The decision comes down to availability, connection detailing and what the rest of the frame uses.
The two diverge much more about the minor axis: H-350x350x10x16-113 has 978 cm³ of minor-axis plastic modulus against 802 cm³, 18.0% more. If the member sees any minor-axis bending, or if it is unrestrained over a long length and lateral-torsional buckling governs, that gap decides the comparison even though the major-axis numbers looked equivalent.
In short, these two are genuine equivalents. Pick whichever your supplier stocks and the rest of the frame already uses.