What do you mean by N, H, SH and so on in the specifications of magnetic materials?
The coercivity is Gs (Gauss). Magnetic materials such as in the closed state by external magnetic field magnetization to saturation, and then withdraw the external magnetic field, permanent magnet magnetic polarization J and internal magnetic induction B and will not disappear because of the disappearance of the H and the external magnetic field, and will maintain a certain size value, the value is the remanence of the material remaining magnetic polarization Jr and residual magnetic induction Br. The unit is T (Tesla) in the SI system and is Gs (Gauss) in the CGS system.
The series of products are classified according to different coercive force indexes, N series is low coercive force; M and H series are medium coercive force; S series is high coercive force; UH and EH series are ultra-high coercive force.NdFeB (N, M, H, such as low, medium and other coercive force of N, M, H series, mainly for audio, mobile phones and so on
The ability to characterize the external magnetic field or other demagnetization effects of permanent magnetic materials is one of the important parameters in the design of magnetic circuits. The units in the SI system are T (Tesla), at CGS
