Neodymium magnet:

neodymium magnet (also known as NdFeB, NIB or Neo magnet), the most widely used type of rare earth magnet, is a permanent magnet made from an alloy of neodymium, iron and boron to form the Nd2Fe14B tetragonal crystalline structure. Developed in 1982 by General Motors and Sumitomo Special Metals, neodymium magnet are the strongest type of permanent magnet commercially available. They have replaced other types of magnets in the many applications in modern products that require strong permanent neodymium magnet.

Neodymium magnet Applications:

Neodymium magnet have replaced Alnico and ferrite magnets in many applications where strong permanent magnets are required, because their greater strength allows the use of smaller, lighter magnets. These applications include:

permanent magnet motors
magnetic resonance imaging (MRI)
magnetic guitar pickups
loudspeakers and headphones
magnetic bearings and couplings
cordless tools
servo motors
lifting and compressor motors
synchronous motors
spindle and stepper motors
electrical power steering
drive motors for hybrid and electric vehicles
actuators

Neodymium magnet specification:

牌号Grade	剩磁Br				矫顽力HcB		内禀矫顽力Hcj		最大磁能积BH				Max working temp
	KGs		T		KOe	KA/m	KOe	KA/m	MGOe		KJ/m³		L/D≥0.7
	MAX	MIN	MAX	MIN	MIN	MIN	MIN	MIN	MAX	MIN	MAX	MIN	℃
N35	12.3	11.8	1.23	1.18	≥10.9	≥868	≥12	≥955	36	33	287	263	≤80
N38	12.6	12.3	1.26	1.23	≥11.3	≥899	≥12	≥955	39	36	311	287	≤80
N40	12.9	12.6	1.29	1.26	≥11.4	≥907	≥12	≥955	41	38	327	302	≤80
N42	13.3	12.9	1.33	1.29	≥11.5	≥915	≥12	≥955	43	40	342	318	≤80
N45	13.7	13.3	1.37	1.33	≥11.0	≥876	≥12	≥955	46	43	366	342	≤80
N48	14.1	13.7	1.41	1.37	≥10.5	≥836	≥12	≥955	49	45	390	358	≤80
N50	14.5	14.0	1.45	1.40	≥10.5	≥836	≥12	≥955	51	47	406	374	≤80
N52	14.8	14.3	1.48	1.43	≥10.5	≥836	≥11	≥876	53	49	422	390	≤70
38M	12.6	12.3	1.26	1.23	≥11.3	≥899	≥14	≥1114	39	36	311	287	≤100
40M	12.9	12.6	1.29	1.26	≥11.6	≥923	≥14	≥1114	41	38	327	302	≤100
42M	13.3	12.9	1.33	1.29	≥12	≥955	≥14	≥1114	43	40	342	318	≤100
45M	13.7	13.3	1.37	1.33	≥12.5	≥995	≥14	≥1114	46	43	366	342	≤100
48M	14.1	13.7	1.41	1.37	≥12.9	≥1027	≥14	≥1114	49	45	390	358	≤100
50M	14.5	14.0	1.45	1.40	≥13	≥1033	≥14	≥1114	51	47	406	374	≤100
35H	12.3	11.8	1.23	1.18	≥10.9	≥868	≥17	≥1353	36	33	287	263	≤120
38H	12.6	12.3	1.26	1.23	≥11.3	≥899	≥17	≥1353	39	36	311	287	≤120
40H	12.9	12.6	1.29	1.26	≥11.6	≥923	≥17	≥1353	41	38	327	302	≤120
42H	13.3	12.9	1.33	1.29	≥12	≥955	≥17	≥1353	43	40	342	318	≤120
45H	13.7	13.3	1.37	1.33	≥12.3	≥979	≥17	≥1353	46	43	366	342	≤120
48H	14.1	13.7	1.41	1.37	≥12.5	≥995	≥17	≥1353	49	46	390	366	≤120
50H	14.3	14.0	1.43	1.40	≥13.3	≥1058	≥17	≥1353	50	47	398	374	≤120
33SH	11.8	11.4	1.18	1.14	≥10.6	≥844	≥20	≥1592	34	31	271	247	≤150
35SH	12.3	11.8	1.23	1.18	≥11	≥876	≥20	≥1592	36	33	287	263	≤150
38SH	12.6	12.3	1.26	1.23	≥11.4	≥907	≥20	≥1592	39	36	311	287	≤150
40SH	12.9	12.6	1.29	1.26	≥11.6	≥939	≥20	≥1592	41	38	326	302	≤150
42SH	13.3	12.9	1.33	1.29	≥12.4	≥987	≥20	≥1592	43	40	342	318	≤150
45SH	13.7	13.2	1.37	1.32	≥12.6	≥1003	≥20	≥1592	46	42	366	334	≤150
48SH	14.0	13.7	1.4	1.37	≥13	≥1034	≥20	≥1592	49	49	390	366	≤150
33UH	11.8	11.4	1.18	1.14	≥10.7	≥852	≥25	≥1989	34	31	271	247	≤180
35UH	12.3	11.8	1.23	1.18	≥10.8	≥860	≥25	≥1989	36	33	287	263	≤180
38UH	12.6	12.3	1.26	1.23	≥11.3	≥899	≥25	≥1989	39	36	311	287	≤180
40UH	12.9	12.5	1.29	1.25	≥11.3	≥899	≥25	≥1989	41	38	326	302	≤180
42UH	13.3	12.8	1.33	1.28	≥11.6	≥923	≥25	≥1989	43	40	342	318	≤180
45UH	13.7	13.2	1.37	1.32	≥12.6	≥1003	≥25	≥1989	46	42	366	334	≤180
33EH	11.8	11.4	1.18	1.14	≥10.3	≥820	≥30	≥2388	34	31	271	247	≤200
35EH	12.3	11.7	1.23	1.17	≥10.5	≥836	≥30	≥2388	36	33	287	263	≤200
38EH	12.6	12.2	1.26	1.22	≥11.3	≥899	≥30	≥2388	39	35	311	278	≤200
40EH	12.9	12.6	1.29	1.26	≥11.6	≥939	≥30	≥2388	41	38	326	302	≤200
28TH	10.9	10.4	1.09	1.04	≥9.8	≥780	≥35	≥2785	29	26	231	207	≤230
30TH	11.3	10.8	1.13	1.08	≥10.1	≥804	≥35	≥2785	31	28	247	223	≤230

Notification: KM specification test each grade under 15-23 centigrade, check more physical characteristics of magnetic materials, or contact with our sales engineer about your application to get professional proposals.

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