According to the manufacturing process and use of electrical steel is divided into hot rolled silicon steel, cold rolled electrical steel and special purpose silicon steel three categories, its silicon content, specifications and main uses are shown in the table:

In addition to the above table, there are some special purpose electrical steel plates, such as 0.15 and 0.20mm thick 3%Si cold rolled non-oriented silicon steel strips and 0.025, 0.05 and 0.1mm thick 3%Si cold rolled oriented silicon steel strips, used for medium and high frequency motors and transformers and pulse transformers; 0.7mm thick 3%Si high-strength cold-rolled non-oriented silicon steel plates for relays and power switches; High-strength cold-rolled electrical steel plate for new high-speed motor rotor; Hot rolled thick plate and cold rolled plate of low-carbon electrical steel for magnetic shielding such as medical NMR tomography scanner and high energy accelerator electromagnet; 4.5%~6.5%Si high silicon steel plate for high frequency motors and transformers and magnetic shielding.