Super Neodymium round magnet
Neodymium permanent magnets (ND-Fe-B) are composed of neodymium, iron, boron and a few transition metals. These magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such as rings, blocks and discs.
Attributes of Neodymium
1. Very high resistance to demagnetization
2. High energy for size
3. Good in ambient temperature
4. Moderately priced
5. Material is corrosive and should be coated for long term maximum energy output
6. Low working temperature for heat applications, but higher levels of heat resistance materials are being introduced periodically.
Applications of Neodymium
Magnetic separators, linear actuators, microphone assemblies, servo motors, DC motors (automotive starters), computer rigid disc drives, printers and speakers.
Technical Data of Sintered NdFeB Magnet |
Grade |
Br |
Hcb |
Hcj |
(BH)max |
(Tw) |
mT |
(kGs) |
kA/m |
(kOe) |
kA/m |
(kOe) |
kJ/m3 |
(MGOe) |
N35 |
1170-1220 |
(11.7-12.2) |
≥868 |
( ≥10.9) |
≥955 |
( ≥12) |
263-287 |
(33-36) |
80 ºC |
N38 |
1220-1250 |
(12.2-12.5) |
≥899 |
( ≥11.3) |
≥955 |
( ≥12) |
287-310 |
(36-39) |
80 ºC |
N40 |
1250-1280 |
(12.5-12.8) |
≥907 |
( ≥11.4) |
≥955 |
( ≥12) |
302-326 |
(38-41) |
80 ºC |
N42 |
1280-1320 |
(12.8-13.2) |
≥915 |
( ≥11.5) |
≥955 |
( ≥12) |
318-342 |
(40-43) |
80 ºC |
N45 |
1320-1380 |
(13.2-13.8) |
≥923 |
( ≥11.6) |
≥955 |
( ≥12) |
342-366 |
(43-46) |
80 ºC |
N48 |
1380-1420 |
(13.8-14.2) |
≥923 |
( ≥11.6) |
≥876 |
( ≥12) |
366-390 |
(46-49) |
80 ºC |
N50 |
1400-1450 |
(14.0-14.5) |
≥796 |
( ≥10.0) |
≥876 |
( ≥11) |
382-406 |
(48-51) |
60 ºC |
N52 |
1430-1480 |
(14.3-14.8) |
≥796 |
( ≥10.0) |
≥876 |
( ≥11) |
398-422 |
(50-53) |
60 ºC |
30M |
1080-1130 |
(10.8-11.3) |
≥796 |
( ≥10.0) |
≥1114 |
( ≥14) |
223-247 |
(28-31) |
100 ºC |
33M |
1130-1170 |
(11.3-11.7) |
≥836 |
( ≥10.5) |
≥1114 |
( ≥14) |
247-263 |
(31-33) |
100 ºC |
35M |
1170-1220 |
(11.7-12.2) |
≥868 |
( ≥10.9) |
≥1114 |
( ≥14) |
263-287 |
(33-36) |
100 ºC |
38M |
1220-1250 |
(12.2-12.5) |
≥899 |
( ≥11.3) |
≥1114 |
( ≥14) |
287-310 |
(36-39) |
100 ºC |
40M |
1250-1280 |
(12.5-12.8) |
≥923 |
( ≥11.6) |
≥1114 |
( ≥14) |
302-326 |
(38-41) |
100 ºC |
42M |
1280-1320 |
(12.8-13.2) |
≥955 |
( ≥12.0) |
≥1114 |
( ≥14) |
318-342 |
(40-43) |
100 ºC |
45M |
1320-1380 |
(13.2-13.8) |
≥995 |
( ≥12.5) |
≥1114 |
( ≥14) |
342-366 |
(43-46) |
100 ºC |
48M |
1360-1430 |
(13.6-14.3) |
≥1027 |
( ≥12.9) |
≥1114 |
( ≥14) |
366-390 |
(46-49) |
100 ºC |
50M |
1400-1450 |
(14.0-14.5) |
≥1033 |
( ≥13.0) |
≥1114 |
( ≥14) |
382-406 |
(48-51) |
100 ºC |
30H |
1080-1130 |
(10.8-11.3) |
≥796 |
( ≥10.0) |
≥1353 |
( ≥17) |
223-247 |
(28-31) |
120 ºC |
33H |
1130-1170 |
(11.3-11.7) |
≥836 |
( ≥10.5) |
≥1353 |
( ≥17) |
247-271 |
(31-34) |
120 ºC |
35H |
1170-1220 |
(11.7-12.2) |
≥868 |
( ≥10.9) |
≥1353 |
( ≥17) |
263-287 |
(33-36) |
120 ºC |
38H |
1220-1250 |
(12.2-12.5) |
≥899 |
( ≥11.3) |
≥1353 |
( ≥17) |
287-310 |
(36-39) |
120 ºC |
40H |
1250-1280 |
(12.5-12.8) |
≥923 |
( ≥11.6) |
≥1353 |
( ≥17) |
302-326 |
(38-41) |
120 ºC |
42H |
1280-1320 |
(12.8-13.2) |
≥955 |
( ≥12.0) |
≥1353 |
( ≥17) |
318-342 |
(40-43) |
120 ºC |
45H |
1300-1360 |
(13-13.6) |
≥963 |
( ≥12.1) |
≥1353 |
( ≥17) |
326-358 |
(43-46) |
120 ºC |
48H |
1370-1430 |
(13.7-14.3) |
≥995 |
( ≥12.5) |
≥1353 |
( ≥17) |
366-390 |
(46-49) |
120 ºC |
30SH |
1080-1130 |
(10.8-11.3) |
≥804 |
( ≥10.1) |
≥1592 |
( ≥20) |
223-247 |
(28-31) |
150 ºC |
33SH |
1130-1170 |
(11.3-11.7) |
≥844 |
( ≥10.6) |
≥1592 |
( ≥20) |
247-271 |
(31-34) |
150 ºC |
35SH |
1170-1220 |
(11.7-12.2) |
≥876 |
( ≥11.0) |
≥1592 |
( ≥20) |
263-287 |
(33-36) |
150 ºC |
38SH |
1220-1250 |
(12.2-12.5) |
≥907 |
( ≥11.4) |
≥1592 |
( ≥20) |
287-310 |
(36-39) |
150 ºC |
40SH |
1240-1280 |
(12.5-12.8) |
≥939 |
( ≥11.8) |
≥1592 |
( ≥20) |
302-326 |
(38-41) |
150 ºC |
42SH |
1280-1320 |
(12.8-13.2) |
≥987 |
( ≥12.4) |
≥1592 |
( ≥20) |
318-342 |
(40-43) |
150 ºC |
45SH |
1320-1380 |
(13.2-13.8) |
≥1003 |
( ≥12.6) |
≥1592 |
( ≥20) |
342-366 |
(43-46) |
150 ºC |
28UH |
1020-1080 |
(10.2-10.8) |
≥764 |
( ≥9.6) |
≥1990 |
( ≥25) |
207-231 |
(26-29) |
180 ºC |
30UH |
1080-1130 |
(10.8-11.3) |
≥812 |
( ≥10.2) |
≥1990 |
( ≥25) |
223-247 |
(28-31) |
180 ºC |
33UH |
1130-1170 |
(11.3-11.7) |
≥852 |
( ≥10.7) |
≥1990 |
( ≥25) |
247-271 |
(31-34) |
180 ºC |
35UH |
1180-1220 |
(11.8-12.2) |
≥860 |
( ≥10.8) |
≥1990 |
( ≥25) |
263-287 |
(33-36) |
180 ºC |
38UH |
1220-1250 |
(12.2-12.5) |
≥876 |
( ≥11.0) |
≥1990 |
( ≥25) |
287-310 |
(36-39) |
180 ºC |
40UH |
1240-1280 |
(12.5-12.8) |
≥899 |
( ≥11.3) |
≥1990 |
( ≥25) |
302-326 |
(38-41) |
180 ºC |
28EH |
1040-1090 |
(10.4-10.9) |
≥780 |
( ≥9.8) |
≥2388 |
( ≥30) |
207-231 |
(26-29) |
200 ºC |
30EH |
1080-1130 |
(10.8-11.3) |
≥812 |
( ≥10.2) |
≥2388 |
( ≥30) |
223-247 |
(28-31) |
200 ºC |
33EH |
1130-1170 |
(11.3-11.7) |
≥836 |
( ≥10.5) |
≥2388 |
( ≥30) |
247-271 |
(31-34) |
200 ºC |
35EH |
1170-1220 |
(11.7-12.2) |
≥876 |
( ≥11.0) |
≥2388 |
( ≥30) |
263-287 |
(33-36) |
200 ºC |
38EH |
1220-1250 |
(12.2-12.5) |
≥899 |
( ≥11.3) |
≥2388 |
( ≥30) |
287-310 |
(36-39) |
200 ºC |
28AH |
1040-1090 |
(10.4-10.9) |
≥787 |
( ≥9.9) |
≥2624 |
( ≥33) |
207-231 |
(26-29) |
230 ºC |
30AH |
1080-1130 |
(10.8-11.3) |
≥819 |
( ≥10.3) |
≥2624 |
( ≥33) |
223-247 |
(28-31) |
230 ºC |
33AH |
1130-1170 |
(11.3-11.7) |
≥843 |
( ≥10.6) |
≥2624 |
( ≥33) |
247-271 |
(31-34) |
230 ºC |