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NDFEB MAGNET

Sintered NdFeB, known as the "King of Magnets", is the third-generation rare earth permanent magnet material and the strongest magnetic material in the world with excellent magnetic properties. It is widely used in automotive industry, industrial motors, consumer electronics, clean energy, aerospace and other fields. The main component of the magnet is Nd2Fe14B, which offers extremely high magnetic performance. Its BHmax is more than 10 times higher than that of ferrite, and the maximum operating temperature can reach 250℃. It also features good mechanical properties and is suitable for various processing methods such as grinding, wire cutting and drilling. Due to its poor corrosion resistance, the surface must be coated with different coatings according to various requirements (e.g. Zn, Ni, Epoxy, etc.).

Our products have been widely used in servo motors, brushless motors, linear motors, automotive motors, HEV & electric vehicle motors, robot drive motors, inverter compressor motors, traction motors, wind turbines, energy-saving elevators, loudspeakers, magnetic switches, VCM, MRI, magnetic separators, sensors and more.

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GRADE Remanence (Br) Coercivity (bHc) Intrinsic Coercivity Maximum Energy Product Operating Temp. Tw ℃
(iHc) (BH)max
T KGs KA/m KOe KA/m KOe KJ/m3 MGOe
N35 1.18-1.23 11.8-12.3 ≥860 ≥10.8 ≥955 ≥12 263-287 33-36 ≤80
N38 1.22-1.28 12.2-12.8 ≥860 ≥10.8 ≥955 ≥12 287-310 36-39 ≤80
N40 1.26-1.31 12.6-13.1 ≥876 ≥11.0 ≥955 ≥12 302-326 38-41 ≤80
N42 1.28-1.34 12.8-13.4 ≥876 ≥11.0 ≥955 ≥12 318-342 40-43 ≤80
N45 1.32-1.37 13.2-13.7 ≥876 ≥11.0 ≥955 ≥12 342-366 43-46 ≤80
N48 1.36-1.42 13.6-14.2 ≥876 ≥11.0 ≥955 ≥12 358-390 45-48 ≤80
N50 1.39-1.45 13.9-14.5 ≥876 ≥11.0 ≥955 ≥12 374-406 47-51 ≤80
N52 1.42-1.48 14.2-14.8 ≥796 ≥10.0 ≥876 ≥11 390-422 49-53 ≤80
N54 1.45-1.51 14.5-15.1 ≥756 ≥9.5 ≥876 ≥11 400-440 51-55 ≤80
N35M 1.18-1.23 11.8-12.3 ≥876 ≥11 ≥1114 ≥14 263-287 33-36 ≤100
N38M 1.22-1.28 12.2-12.8 ≥876 ≥11 ≥1114 ≥14 287-310 36-39 ≤100
N40M 1.26-1.31 12.6-13.1 ≥876 ≥11 ≥1114 ≥14 302-326 38-41 ≤100
N42M 1.28-1.34 12.8-13.4 ≥923 ≥11.6 ≥1114 ≥14 318-342 40-43 ≤100
N45M 1.34-1.39 13.4-13.9 ≥923 ≥11.6 ≥1114 ≥14 342-366 43-46 ≤100
N48M 1.36-1.42 13.6-14.2 ≥923 ≥11.6 ≥1114 ≥14 366-390 46-49 ≤100
N50M 1.39-1.45 13.9-14.5 ≥923 ≥11.6 ≥1114 ≥14 384-408 48-51 ≤100
N35H 1.18-1.23 11.8-12.3 ≥876 ≥11 ≥1353 ≥17 263-287 33-36 ≤120
N38H 1.22-1.28 12.2-12.8 ≥876 ≥11 ≥1353 ≥17 287-310 36-39 ≤120
N40H 1.26-1.31 12.6-13.1 ≥923 ≥11.6 ≥1353 ≥17 302-326 38-41 ≤120
N42H 1.28-1.34 12.8-13.4 ≥955 ≥12 ≥1353 ≥17 318-342 40-43 ≤120
N45H 1.33-1.39 13.3-13.9 ≥955 ≥12 ≥1353 ≥17 342-366 43-46 ≤120
N48H 1.36-1.42 13.6-14.2 ≥955 ≥12 ≥1353 ≥17 366-390 46-49 ≤120
N50H 1.39-1.45 13.9-14.5 ≥955 ≥12 ≥1274 ≥16 384-408 48-51 ≤120
N33SH 1.14-1.19 11.4-11.9 ≥836 ≥10.5 ≥1592 ≥20 247-270 31-34 ≤150
N35SH 1.18-1.23 11.8-12.3 ≥876 ≥11 ≥1592 ≥20 263-287 33-36 ≤150
N38SH 1.22-1.28 12.2-12.8 ≥876 ≥11 ≥1592 ≥20 287-310 36-39 ≤150
N40SH 1.26-1.30 12.6-13.0 ≥923 ≥11.6 ≥1592 ≥20 302-326 38-41 ≤150
N42SH 1.28-1.34 12.8-13.4 ≥955 ≥12 ≥1592 ≥20 318-342 40-43 ≤150
N45SH 1.33-1.39 13.3-13.9 ≥955 ≥12 ≥1592 ≥20 342-366 43-46 ≤150
N48SH 1.36-1.42 13.6-14.2 ≥955 ≥12 ≥1592 ≥20 366-390 46-49 ≤150
N28UH 1.03-1.09 10.3-10.9 ≥740 ≥9.30 ≥1990 ≥25 207-231 26-29 ≤180
N30UH 1.09-1.14 10.9-11.4 ≥796 ≥10 ≥1990 ≥25 223-247 28-31 ≤180
N33UH 1.13-1.19 11.3-11.7 ≥836 ≥10.5 ≥1990 ≥25 247-263 31-33 ≤180
N35UH 1.18-1.22 11.8-12.2 ≥876 ≥11 ≥1990 ≥25 263-287 33-36 ≤180
N38UH 1.22-1.27 12.2-12.7 ≥876 ≥11 ≥1990 ≥25 287-310 36-39 ≤180
N40UH 1.26-1.30 12.6-13.0 ≥923 ≥11.6 ≥1990 ≥25 302-326 38-41 ≤180
N42UH 1.28-1.34 12.8-13.4 ≥955 ≥12 ≥1990 ≥25 318-342 40-43 ≤180
N28EH 1.03-1.09 10.3-10.9 ≥740 ≥9.30 ≥2388 ≥30 207-231 26-29 ≤200
N30EH 1.08-1.13 10.8-11.3 ≥796 ≥10.0 ≥2388 ≥30 223-247 28-31 ≤200
N33EH 1.13-1.19 11.3-11.7 ≥836 ≥10.5 ≥2388 ≥30 247-263 31-33 ≤200
N35EH 1.18-1.22 11.8-12.2 ≥876 ≥11 ≥2388 ≥30 263-287 33-36 ≤200
N38EH 1.22-1.27 12.2-12.7 ≥876 ≥11 ≥2388 ≥30 287-310 36-39 ≤200
N40EH 1.26-1.30 12.6-13.0 ≥923 ≥11.6 ≥2388 ≥30 302-326 38-41 ≤200
N28AH 1.03-1.09 10.3-10.9 ≥740 ≥9.30 ≥2786 ≥35 207-231 26-29 ≤220
N30AH 1.08-1.13 10.8-11.3 ≥796 ≥10.0 ≥2786 ≥35 223-247 28-31 ≤220
N33AH 1.13-1.17 11.3-11.7 ≥836 ≥10.5 ≥2786 ≥35 247-263 31-33 ≤220
N35AH 1.18-1.23 11.8-12.3 ≥876 ≥11.0 ≥2786 ≥35 263-287 33-36 ≤220


Block Magnets Size Range (mm) Size (mm) Max. Machining Tolerance
L W T Dimensional Tolerance Parallelism Perpendicularity
1 ＜ L ≤ 300 1 ＜ W ≤ 100 1 ＜ T ＜ 60 L ≤ 10
10 ＜ L ≤ 60
60 ＜ L ≤ 100
100 ＜ L ≤ 300
 ±0.03
±0.05
±0.1
±0.15
 0.05
0.1
0.2
0.2
 0.1
0.1
0.3
0.5
Disc Magnets Size Range (mm) Size (mm) Max. Machining Tolerance
D T Dimensional Tolerance Parallelism Perpendicularity
2 ＜ OD ≤ 300 1 ＜ T ＜ 60 OD ≤ 10
10 ＜ OD ≤ 60
60 ＜ OD ≤ 100
100 ＜ OD ≤ 300
 ±0.03
±0.05
±0.1
±0.15 		0.05
0.1
0.2
0.2
 0.1
0.1
0.3
0.5
Arc Segments Size Range (mm) Size (mm) Max. Machining Tolerance
OD H W T Dimensional Tolerance Parallelism Perpendicularity
/ 2 ＜ H ≤ 250 2 ＜ W ≤ 100 1 ＜ T ≤ 60 H ≤ 10
10 ＜ H ≤ 60
60 ＜ OD/ID ≤ 100
100 ＜ OD/ID ≤ 300
 ±0.03
±0.05
±0.1
±0.15
 0.05
0.1
0.2
0.2
 0.1
0.1
0.3
0.5
Coating Type Color Coating Thickness (μm) SST(h)
Trivalent Blue-White Zinc White-Blue 4–10 12–24
Trivalent Color Zinc Light Color 4–10 ＞24
Phosphating Gray / 4–8
Ni-Cu-Ni Silver 10–30 ＞24
Black Nickel Metallic Black 10–30 ＞24
Ni + Sn Silver-White 10–30 ＞48
Ni + Ag Silver-White 10–30 ＞48
Ni + Au Golden 10–30 ＞48
Black Epoxy Black 10–30 ＞24
White Epoxy White 10–30 ＞48
Ni-Cu + Black Epoxy Black 20–40 ＞48
Ni + Black Epoxy Black 20–40 ＞48