Silicon steel sheets are essentially very low-carbon steel sheets with a silicon mass fraction of 0.5% to 5%.
Based on application, they can be classified into motor-grade silicon steel sheets (silicon content usually below 2.5%, thickness generally 0.5 mm) and transformer-grade silicon steel sheets (silicon content usually 2.5%–4.5%, thickness generally 0.35 mm).
Based on production method, they are categorized into hot-rolled and cold-rolled silicon steel sheets; cold-rolled sheets are further subdivided based on grain orientation into grain-oriented silicon steel (used for transformers) and non-oriented silicon steel (used for motors).
They can also be classified according to operating conditions: those used in strong magnetic fields (predominantly in the electric power industry; this is the most common and widely used type) versus weak magnetic fields (mainly in the telecommunications industry), as well as those designed for power frequency versus high-frequency applications.
For high-frequency applications, silicon steel sheets typically have a thickness of 0.1–0.2 mm to minimize eddy current losses, while those used in pulse transformers can be as thin as 0.05 mm or less.

Time：11/08/2026 16:06:36

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