Magnetic steel is the basis for providing the size of the magnetic energy product. Now the popular magnets for car audio in the market generally include ferrite magnets and NdFeB magnets: Ferrite magnets: the most commonly used magnets, which are sintered from iron oxides; The strength of the magnetic field varies depending on the purity of the steel. The strength of the magnetism is divided into grades from Y20 to Y35, which are generally distinguished by the surface magnetic strength of the magnetic steel. The grade of Y20 is the lowest and the grade of Y35 is the highest. The disadvantage is that the body is large and fragile, and the magnet with low coercivity is relatively easy to demagnetize. NdFeB magnet steel: It is a magnet steel with high coercivity, which is made by adding rare elements such as neodymium and boron in pure iron. Because of its high coercivity, it is not easy to be magnetized or demagnetized. Special charging is required. A magnet machine can magnetize. It has small size and strong magnetic field.







Magnetic steel is the basis for providing the size of the magnetic energy product. Now the popular car audio magnets in the market generally include ferrite magnets and NdFeB magnets:


Ferrite magnetic steel: It is the most commonly used magnetic steel, which is sintered from iron oxides; due to the different purity of the magnetic steel, the magnitude of the magnetic field strength is different, and the magnetic strength is graded from Y20 to Y35. , is generally distinguished by the surface magnetic strength of the magnetic steel, the grade of Y20 is the lowest, and the grade of Y35 is the highest. The disadvantage is that the body is large and fragile, and the magnet with low coercivity is relatively easy to demagnetize.


NdFeB magnet steel: It is a magnet steel with high coercivity, which is made by adding rare elements such as neodymium and boron in pure iron. Because of its high coercivity, it is not easy to be magnetized or demagnetized. Special charging is required. A magnet machine can magnetize. It has the characteristics of small size and high magnetic field strength, but at the same time, it is greatly affected by temperature. Generally, when the temperature is above 75 °C, the magnetic field strength decreases significantly with the increase of temperature. Now there are high-temperature NdFeB magnets on the market, which are products developed for high temperature and decreased magnetic field strength.