Neodymium/NdFeB Magnets

Category: sintered neodymium magnets/ sintered NdFeB magnets/rare earth magnets

Advantages: high performance-price ratio; high magnetic energy, good machanical properties

Disadvantages: poor temperature characteristic; poor corrosion resistance,surface treatment needed; price is not stable

Neodymium-iron-boron magnets short as Nd-Fe-B magnets, NIB magnets, neo magnets or neodymium magnets. Following called as NdFeB magnets or neodymium magnets.

As a kind of rare earth magnets, neodymium magnets were developed from the year of 1983 , it is the most powerful rare-earth permanent magnet so far, and it sometimes called as super strong magnets. Neodymium magnets have the higher Br, and BH（max） than any other magnet formula. It has superior magnetic properties than all other magnetic materials , so it is widely used in industry production and daily life.

The outstanding characteristics for neodymium magnets are as follows
Higher magnetic properties than other magnets which realize the smallest size and lightest weight in designing devices. As a real powerful magnets,have strongest magnetic force.
Being mostly an iron based alloy, which make it easy to be oxidation or rust. To eliminate such a problem, the user should consider suitable surface treatment.
Being less prone to chipping during handing
Lower temperature coefficient of magnetic properties than ceramic but higher than SmCo type rare earth magnet. Therefore, this NdFeB type rare earth magnet will suffer irreversible loss at high temperature
The Nd-Fe-B permanent magnets are the next century magnets, that used in a wide range of industries including computer, automobile, electric machinary, electri-sound devices, automatic control, magnetic force mechanism, microwave communication, petrochemical industry, medical apparatus and equipment. The magnets are the ideal materials for the subminiature magnetic devices with high function.

Neodymium-iron-boron(NdFeB )magnets are made from alloys of rare earth elements, such as neodymium,oxide iron, boron,.. It's the latest result of the development of rare-earth permanent magnetic materials. Because of its excellent performance and super strong magnetic force, it called as king magnets. NdFeB(neodymium) magnets with the highest maximum energy, make the instruments and meters，permanent magnetic electrical machinery，magnetic separator more smaller, more lighter and more thinner .It is used when small size and maximum magnetic power needed.

NdFeB permanent magnets can be divided into bonded NdFeB magnets and sintered NdFeB magnets according to the processing methods. Bonded neodymium magnets is shaped by injecting，sintered neodymium magnets shaped by pressing and sintering in vacuum condition.

Sintered neodymium magnets are high performance magnets and are also the strongest permanent magnets so far. It can be machined into different shapes, such as neodymium ring magnets, neodymium disc magnets, neodymium block/rectangular/square magnets, neodymium cylinder/rod magnets, neodymium countersunk /countersink magnets, neodymium cone magnets, neodymium segment/arc magnets and neodymium sphere/ball magnets (magnetic balls).

Meank magnetics has very strong processing ability,besides has wide size range of neodymium magnets for sale,we produce more and more irregular shapes. Please not hesitate to send us magnets inquiry and magnets order. We'll be your reliable sintered ndfeb tube magnets supplier/producer.
Magnet
Type(Grade) Remanence (Br) HcB HcJ (B-H)max Max.Temp.
(KGs) (mT) (Koe) (KA/m) (Koe) (KA/m) (MGOe) (KJ/m3) ℃
N35 11.7-12.2 1170-1220 ≥10.9 ≥868 ≥12 ≥955 33-36 263-287 80℃
N38 12.2-12.5 1220-1250 ≥11.3 ≥899 ≥12 ≥955 36-39 287-310 80℃
N40 12.5-12.8 1250-1280 ≥11.4 ≥907 ≥12 ≥955 38-41 302-326 80℃
N42 12.8-13.2 1280-1320 ≥11.5 ≥915 ≥12 ≥955 40-43 318-342 80℃
N45 13.2-13.8 1320-1380 ≥11.6 ≥923 ≥12 ≥955 43-46 342-366 80℃
N48 13.8-14.2 1380-1420 ≥10.5 ≥836 ≥12 ≥955 46-49 366-390 80℃
N50 14.0-14.5 1400-1450 ≥10.0 ≥796 ≥11 ≥876 48-51 382-406 80℃
N52 14.3-14.8 1430-1480 ≥10.0 ≥796 ≥11 ≥876 50-53 398-422 60℃
N54 14.5-15.1 1450-1510 ≥10.0 ≥796 ≥11 ≥876 50-53 398-422 60℃
33M 11.3-11.7 1130-1170 ≥10.5 ≥836 ≥14 ≥1114 31-33 247-263 100℃
35M 11.7-12.2 1170-1220 ≥10.9 ≥868 ≥14 ≥1114 33-36 263-287 100℃
38M 12.2-12.5 1220-1250 ≥11.3 ≥899 ≥14 ≥1114 36-39 287-310 100℃
40M 12.5-12.8 1250-1280 ≥11.6 ≥923 ≥14 ≥1114 38-41 302-326 100℃
42M 12.8-13.2 1280-1320 ≥12.0 ≥955 ≥14 ≥1114 40-43 318-342 100℃
45M 13.2-13.8 1320-1380 ≥12.5 ≥995 ≥14 ≥1114 43-46 342-366 100℃
48M 13.6-14.3 1360-1430 ≥12.9 ≥1027 ≥14 ≥1114 46-49 366-390 100℃
50M 14.0-14.5 1400-1450 ≥13.0 ≥1033 ≥14 ≥1114 48-51 382-406 100℃
35H 11.7-12.2 1170-1220 ≥10.9 ≥868 ≥17 ≥1353 33-36 263-287 120℃
38H 12.2-12.5 1220-1250 ≥11.3 ≥899 ≥17 ≥1353 36-39 287-310 120℃
40H 12.5-12.8 1250-1280 ≥11.6 ≥923 ≥17 ≥1353 38-41 302-326 120℃
42H 12.8-13.2 1280-1320 ≥12.0 ≥955 ≥17 ≥1353 40-43 318-342 120℃
45H 13.2-13.6 1320-1360 ≥12.1 ≥963 ≥17 ≥1353 43-46 342-366 120℃
48H 13.7-14.3 1370-1430 ≥12.5 ≥995 ≥17 ≥1353 46-49 366-390 120℃
35SH 11.7-12.2 1170-1220 ≥11.0 ≥876 ≥20 ≥1592 33-36 263-287 150℃
38SH 12.2-12.5 1220-1250 ≥11.4 ≥907 ≥20 ≥1592 36-39 287-310 150℃
40SH 12.5-12.8 1250-1280 ≥11.8 ≥939 ≥20 ≥1592 38-41 302-326 150℃
42SH 12.8-13.2 1280-1320 ≥12.4 ≥987 ≥20 ≥1592 40-43 318-342 150℃
45SH 13.2-13.8 1320-1380 ≥12.6 ≥1003 ≥20 ≥1592 43-46 342-366 150℃
28UH 10.2-10.8 1020-1080 ≥9.6 ≥764 ≥25 ≥1990 26-29 207-231 180℃
30UH 10.8-11.3 1080-1130 ≥10.2 ≥812 ≥25 ≥1990 28-31 223-247 180℃
33UH 11.3-11.7 1130-1170 ≥10.7 ≥852 ≥25 ≥1990 31-34 247-271 180℃
35UH 11.8-12.2 1180-1220 ≥10.8 ≥860 ≥25 ≥1990 33-36 263-287 180℃
38UH 12.2-12.5 1220-1250 ≥11.0 ≥876 ≥25 ≥1990 36-39 287-310 180℃
40UH 12.5-12.8 1250-1280 ≥11.3 ≥899 ≥25 ≥1990 38-41 302-326 180℃
28EH 10.4-10.9 1040-1090 ≥9.8 ≥780 ≥30 ≥2388 26-29 207-231 200℃
30EH 10.8-11.3 1080-1130 ≥10.2 ≥812 ≥30 ≥2388 28-31 223-247 200℃
33EH 11.3-11.7 1130-1170 ≥10.5 ≥836 ≥30 ≥2388 31-34 247-271 200℃
35EH 11.7-12.2 1170-1220 ≥11.0 ≥876 ≥30 ≥2388 33-36 263-287 200℃
38EH 12.2-12.5 1220-1250 ≥11.3 ≥899 ≥30 ≥2388 36-39 287-310 200℃
28AH 10.4-10.9 1040-1090 ≥9.9 ≥787 ≥33 ≥2642 26-29 207-231 230℃
30AH 10.8-11.3 1080-1130 ≥10.3 ≥819 ≥33 ≥2642 28-31 223-247 230℃
33AH 11.3-11.7 1130-1170 ≥10.6 ≥843 ≥33 ≥2642 31-34 247-271 230℃
Note:
●The above mentioned magnetic performance dates are all given under room temperature.
●The above mentioned maximum working temperature of neodymium magnets is changeable due to the ratio of length and diameter,surface treatment and environmental factors.
●All above mentioned magnetic property dates are just for reference.

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