Home Product NDFEB MAGNET
Product series
NDFEB MAGNET
SmCo MAGNET

  • Square magnet

Square magnet

Square magnet

Origin: China

Model:

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Description

Sintered NdFeB permanent magnet material has excellent magnetic performance, widely used in electronics, power machinery, medical equipment, toys, packaging, hardware machinery, aerospace and other fields, the more common permanent magnet motor, speakers, magnetic separator, computer disk drive, magnetic resonance imaging equipment and instruments, etc. Welcome to provide your drawings and specifications to manufacture custom magnets

Magnetic performance table

Grade Remanence（Br） Coercivity(bHc) Intrinic Coercivity Max Energy Product Working Temperature 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


size specification

Block products range of sizes（mm) size（mm) Maximum processing accuracy
L W T dimensional tolerance depth of parallelism verticality
1＜L＜＝300 1＜L＜＝100 1＜L＜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
Circle chip products range of sizes（mm) size（mm) Maximum processing accuracy
D T dimensional tolerance depth of parallelism verticality
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 range of sizes（mm) size（mm) Maximum processing accuracy
OD H W T dimensional tolerance depth of parallelism verticality
/ 2＜H＜＝250 2＜H＜＝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

Description of sintered NdFeB ND-Fe-B magnetic steel coating

Coating type Coating symbol colour Coating thickness (μm) SST(h) Operating temperature peculiarity
Chromium blue white zinc trivalent ZN White and blue 4—10 12-24 ≤160℃ General protection, suitable for most products
Chrome-colored zinc trivalent Colored Zn undertone 4—10 ＞24 ≤160℃ Salt spray resistance
Phosphating/passivation Phosphated/Passivation gray / 4—8 ≤250℃ Temporary protection
nickel-copper-nickel NICUNI silver 10—30 ＞24 ≤200℃ Salt spray resistance, heat and humidity resistance, high temperature resistance
Nickel + tin NI+SN silver 10—30 ＞48 ≤160℃ Pleasing to the eye
Nickel + silver NI+AG silver 10—30 ＞48 - Pleasing to the eye
Nickel + gold NI+AU golden 10—30 ＞48 ≤200℃ Pleasing to the eye
Epoxy resin EPOXY black 10—30 ＞24 ≤160℃ Super salt spray resistance, moisture and heat resistance, good insulation
Nickel copper + epoxy black NICU+EPOXY black 20—40 ＞48 ≤160℃ Super salt spray resistance, moisture and heat resistance, good bonding force, good insulation
Chemical nickel Electroless Nickel silver 4-8 ＞96 ≤200℃ Salt spray resistance, heat and humidity resistance, high temperature resistance
Efrow Everlube yellow 8-20 ＞24 ≤200℃ Salt spray resistance
Teflon Teflon Black gray ＞10 ＞16 ≤260℃ Resistance to friction, high and low temperature, corrosion, acid and alkali
perirelin Parylene transparent 6-12 ＞24 ≤140℃ It has good electrical insulation, moisture proof, corrosion prevention and salt spray prevention


Note: The time of salt spray test and PCT test for different products depends on the actual shape

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