Silicon steel sheet is mainly used to produce a variety of transformers, motors and generators of the core. Electrical silicon steel sheet commonly known as silicon steel sheet or ei lamination. Is a very low carbon-containing ferrosilicon soft magnetic alloy, generally silicon content of 0.5 to 4.5%, made by hot, cold rolled. The general thickness of 1mm below, so called thin plate. Adding silicon increases the resistivity and maximum permeability of iron, reducing coercivity, core loss (iron loss) and magnetic aging. Ei lamination mainly used to make a variety of transformers, motors and generators of the core.