What is the grade of 30P154M steel?

The iron loss value is also called the core loss, which refers to the ineffective electric energy consumed when the iron core is magnetized under the alternating magnetic field of ≥50Hz, and is also often called the variable loss, and its unit is W/kg. This kind of ineffective electric energy consumed due to various obstacles to the change of magnetic flux not only loses electric energy through the heating of the iron core, but also causes the temperature rise of the motor and transformer. The iron loss (PT) of electrical steel includes three parts: hysteresis loss, eddy current loss (Pe) and abnormal loss (Pa). The electrical steel plate has low iron loss, which can not only save a lot of electric energy, but also prolong the working time of the motor and transformer, and simplify the cooling device. Since the power loss caused by the iron loss of electrical steel sheets accounts for 2.5%~4.5% of the annual power generation in various countries, the production of electrical steel sheets in various countries always tries to reduce the iron loss, and takes the iron loss as the most important index for evaluating the magnetic properties of products. The iron loss value of the product is used as the basis for dividing the product grade. Iron loss of M111-30P steel (1.7T, 50Hz) ≤ 1.17W/kg, iron loss (1.7T, 60Hz) ≤ 1.54W/kg