NdFeB (Neodymium-Iron-Boron) magnets are the most powerful rare earth permanent magnets with the good performance of high energy product, high residual induction, high coercive force, also, the cost is much lower than Sm-Co Magnets. Now Nd-Fe-B Magnets are widely accepted in stepping motors, spindle motors, brushless motors, VCMs, magnetrons, speakers, sensors, relays, instruments, and so on. Nd-Fe-B Magnets are prone to rust, so usually surface must be treated in Nickel plating, Zinc plating or epoxy resin. By manufacturing process, NdFeB magnets are divided into Sintered type and Bonded type.

No Grade Br bHc jHc BHmax Max Working kGauss kOe kOe MGOe Temp. °C 01 N30 10.8-11.2 9.8-10.5 ≥12 28-30 80 02 N33 11.4-11.7 10.3-11.0 ≥12 31-33 80 03 N35 11.7-12.1 10.8-11.4 ≥12 33-35 80 04 N38 12.2-12.6 10.8-11.4 ≥12 36-38 80 05 N40 12.6-12.9 10.8-11.4 ≥12 38-40 80 06 N42 13.0-13.3 10.0-10.5 ≥11 40-42 80 07 N45 13.3-13.7 10.0-10.5 ≥11 43-45 80 08 N30M 10.8-11.2 9.8-10.5 ≥14 28-30 100 09 N33M 11.4-11.7 10.3-11.0 ≥14 31-33 100 10 N35M 11.7-12.1 10.8-11.4 ≥14 33-35 100 11 N38M 12.2-12.6 10.8-11.4 ≥14 36-38 100 12 N40M 12.6-12.9 10.8-11.4 ≥14 38-40 100 13 N42M 13.0-13.3 10.8-11.4 ≥14 40-42 100 14 N30H 10.8-11.2 10.1-10.6 ≥17 28-30 120 15 N33H 11.4-11.7 10.3-11.0 ≥17 31-33 120 16 N35H 11.7-12.1 10.8-11.4 ≥17 33-35 120 17 N38H 12.2-12.6 10.8-11.4 ≥17 36-38 120 18 N40H 12.6-12.9 10.8-11.4 ≥17 38-40 120 19 N42H 13.0-13.3 10.8-11.4 ≥17 40-42 120 20 N30SH 10.8-11.2 10.1-10.6 ≥20 28-30 150 21 N33SH 11.4-11.7 10.3-11.0 ≥20 31-33 150 22 N35SH 11.7-12.1 10.8-11.4 ≥20 33-35 150 23 N25UH 9.8-10.2 9.2-9.6 ≥25 23-25 180 24 N28UH 10.4-10.8 9.8-10.2 ≥25 26-28 180 25 N30UH 10.8-11.2 10.1-10.6 ≥25 28-30 180 26 N25EH 9.8-10.2 9.2-9.6 ≥25 23-25 200 27 N28EH 10.4-10.8 9.8-10.2 ≥25 26-28 200

* The above data shall be changed without any notice. * The open flux irreversible loss of the testing sample at max. working temperature is less than 5%