Magnetic cores



Iron-Silicon magnetic cores

The Iron-Silicon alloy is an iron-based material with 3% of Silicon. We use Grain-Oriented (GO) Iron-Silicon or Not-Oriented Grain (NO) Iron-Silicon. The Grain-Oriented Iron-Silicon is available in different quality: standard quality like M6X or high quality like HiB. At TCT, we have our own annealing process to optimize material performance.

With low losses at low-frequency, a high saturation and a good permeability, the Iron-Silicon GO is mainly used in the manufacturing of magnetic sensors, power transformers, three-phase transformers and instrument transformers.


The Iron-Silicon is available in strips with a thickness of 0.025 to 0.3mm and a width of 5 to 200mm.

TCT manufactures wound cores in any shape (toroidal, square, C…)

 Please contact us if you have any questions about the materials used by TCT or specific dimensions.

Technical data (PDF)Add to my list

Technical characteristics

  • High saturation > to nano and < to Iron-Cobalt
  • Good permeability
  • High resistance to temperature



  • Toric
  • Oblong
  • Rectangular
  • Elliptic
  • C shape
  • E shape
  • Cut cores
  • Wound cores



  • Naked
  • Fixing
  • Impregnation
  • Cutting
  • Taping
  • Coating
  • Casing
  • Over moulding
  • Co-winding
  • Shielding