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).

Meankmagnetics 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.

MagnetType(Grade)	Remanence (Br)		HcB		HcJ		(B-H)max
	(KGs)	(mT)	(Koe)	(KA/m)	(Koe)	(KA/m)	(MGOe)	(KJ/m3)	℃
N35		1170-1220	≥10.9	≥868	≥12	≥955	33-36	263-287	80℃
N38		1220-1250	≥11.3	≥899	≥12	≥955	36-39	287-310	80℃
N40		1250-1280	≥11.4	≥907	≥12	≥955	38-41	302-326	80℃
N42		1280-1320	≥11.5	≥915	≥12	≥955	40-43	318-342	80℃
N45		1320-1380	≥11.6	≥923	≥12	≥955	43-46	342-366	80℃
N48		1380-1420	≥10.5	≥836	≥12	≥955	46-49	366-390	80℃
N50		1400-1450	≥10.0	≥796	≥11	≥876	48-51	382-406	80℃
N52		1430-1480	≥10.0	≥796	≥11	≥876	50-53	398-422	60℃
N54		1450-1510	≥10.0	≥796	≥11	≥876	50-53	398-422	60℃
33M		1130-1170	≥10.5	≥836	≥14	≥1114	31-33	247-263	100℃
35M		1170-1220	≥10.9	≥868	≥14	≥1114	33-36	263-287	100℃
38M		1220-1250	≥11.3	≥899	≥14	≥1114	36-39	287-310	100℃
40M		1250-1280	≥11.6	≥923	≥14	≥1114	38-41	302-326	100℃
42M		1280-1320	≥12.0	≥955	≥14	≥1114	40-43	318-342	100℃
45M		1320-1380	≥12.5	≥995	≥14	≥1114	43-46	342-366	100℃
48M		1360-1430	≥12.9	≥1027	≥14	≥1114	46-49	366-390	100℃
50M		1400-1450	≥13.0	≥1033	≥14	≥1114	48-51	382-406	100℃
35H		1170-1220	≥10.9	≥868	≥17	≥1353	33-36	263-287	120℃
38H		1220-1250	≥11.3	≥899	≥17	≥1353	36-39	287-310	120℃
40H		1250-1280	≥11.6	≥923	≥17	≥1353	38-41	302-326	120℃
42H		1280-1320	≥12.0	≥955	≥17	≥1353	40-43	318-342	120℃
45H		1320-1360	≥12.1	≥963	≥17	≥1353	43-46	342-366	120℃
48H		1370-1430	≥12.5	≥995	≥17	≥1353	46-49	366-390	120℃
35SH		1170-1220	≥11.0	≥876	≥20	≥1592	33-36	263-287	150℃
38SH		1220-1250	≥11.4	≥907	≥20	≥1592	36-39	287-310	150℃
40SH		1250-1280	≥11.8	≥939	≥20	≥1592	38-41	302-326	150℃
42SH		1280-1320	≥12.4	≥987	≥20	≥1592	40-43	318-342	150℃
45SH		1320-1380	≥12.6	≥1003	≥20	≥1592	43-46	342-366	150℃
28UH		1020-1080	≥9.6	≥764	≥25	≥1990	26-29	207-231	180℃
30UH		1080-1130	≥10.2	≥812	≥25	≥1990	28-31	223-247	180℃
33UH		1130-1170	≥10.7	≥852	≥25	≥1990	31-34	247-271	180℃
35UH		1180-1220	≥10.8	≥860	≥25	≥1990	33-36	263-287	180℃
38UH		1220-1250	≥11.0	≥876	≥25	≥1990	36-39	287-310	180℃
40UH		1250-1280	≥11.3	≥899	≥25	≥1990	38-41	302-326	180℃
28EH		1040-1090	≥9.8	≥780	≥30	≥2388	26-29	207-231	200℃
30EH		1080-1130	≥10.2	≥812	≥30	≥2388	28-31	223-247	200℃
33EH		1130-1170	≥10.5	≥836	≥30	≥2388	31-34	247-271	200℃
35EH		1170-1220	≥11.0	≥876	≥30	≥2388	33-36	263-287	200℃
38EH		1220-1250	≥11.3	≥899	≥30	≥2388	36-39	287-310	200℃
28AH		1040-1090	≥9.9	≥787	≥33	≥2642	26-29	207-231	230℃
30AH		1080-1130	≥10.3	≥819	≥33	≥2642	28-31	223-247	230℃
33AH		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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