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NdFeB Magnet

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NdFeB

NdFeB magnet is a tetragonal crystal formed by Nd, Fe, Fe (chemical formula Nd2Fel4B), which belongs to rare earth permanent magnet material. This material was discovered by Sagawa Masatoshi of Sumitomo Special Metals in 1982. NdFeB magnet has the characteristics of high remanence, high coercivity and high magnetic energy product. It is the permanent magnet with magnetic properties second only to absolute zero Nd magnet so far, and it is also the most common rare earth magnet.

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NdFeB Magnet Laminated Magnet Motor Assemblies

Detail

The main components of NdFeB magnet include Nd (accounting for about 25%-35%), Fe (accounting for about 65%-75%) and B (accounting for about 1%). They have the advantages of high remanence density, high coercivity and high magnetic energy product, and they are considered to be the strongest permanent magnet material at present. The magnetic energy product of NdFeB magnet is higher than that of ferrite magnet, and the magnetic force is 3-5 times that of ferrite. It is also more stable and the magnetic force is controllable.

NdFeB magnets are widely used in fields such as electroacoustics and telecommunications, motors, instruments, nuclear magnetic resonance, magnetic levitation and magnetic sealing. They are particularly suitable for manufacturing high-performance products, such as VCM sheets for optical drive motors, anisotropic magnets in the field of acoustics, spiral magnets in oil exploration drilling rigs, and various sizes and shapes of products in permanent magnet motors. In addition,NdFeB magnets are also widely used in new energy vehicles, variable frequency air conditioners, energy-saving elevators, magnetic levitation trains, intelligent robots, wind power generation and other fields.

Performance Parameters of Sintered NdFeB Magnets
Classification	Performance	Residual magnetism				Coercivity		Endowed Coercivity		Maximum magnetic energy product				Squareness%	Working temperature℃
		KGs		T		KOe	KA/m	KOe	KA/m	MGOe		KJ/m³		Hk/Hcj	When PC=2
		Min.	Max.	Min.	Max.	Min.	Min.	Min.	Min.	Min.	Min.	Min.	Max	Min.	Typical
N	N35	11.80	12.30	1.18	1.23	10.5	836	11	876	33	36	263	287	95	80
	N38	12.30	12.60	1.23	1.26	10.5	836	11	876	36	39	287	310	95	80
	N40	12.60	12.90	1.26	1.29	10.5	836	11	876	38	41	302	326	95	80
	N42	12.90	13.30	1.29	1.33	10.5	836	11	954	40	43	318	342	95	80
	N45	13.30	13.70	1.33	1.37	10.5	836	11	876	43	46	342	366	95	80
	N48	13.70	14.10	1.37	1.41	10.5	836	11	876	45	49	358	390	95	80
	N50	14.00	14.40	1.40	1.44	10.5	836	11	876	47	51	374	406	95	80
	N52	14.30	14.80	1.43	1.48	10.5	836	11	876	49	53	390	422	95	80
	N54	14.70	15.00	1.47	1.50	10.5	836	11	876	51	55	406	438	95	80
M	N35M	11.80	12.30	1.18	1.23	11.2	892	14	1114	33	36	263	287	95	100
	N38M	12.30	12.60	1.23	1.26	11.5	915	14	1114	36	39	287	310	95	100
	N40M	12.60	12.90	1.26	1.29	11.8	939	14	1114	38	41	302	326	95	100
	N42M	12.90	13.30	1.29	1.33	12	955	14	1114	40	43	318	342	95	100
	N45M	13.30	13.70	1.33	1.37	12.2	971	14	1114	43	46	342	366	95	100
	N48M	13.70	14.10	1.37	1.41	12.7	1011	14	1114	45	49	358	390	95	100
	N50M	14.00	14.40	1.40	1.44	13	1035	14	1114	47	51	374	406	95	100
	N52M	14.30	14.80	1.43	1.48	12.8	1019	14	1114	49	53	390	422	95	100
H	N33H	11.40	11.80	1.14	1.18	10.8	860	17	1353	31	34	247	271	95	120
	N35H	11.80	12.30	1.18	1.23	11	876	17	1353	33	36	263	287	95	120
	N38H	12.30	12.60	1.23	1.26	11.5	915	17	1353	36	39	287	310	95	120
	N40H	12.60	12.90	1.26	1.29	11.8	939	17	1353	38	41	302	326	95	120
	N42H	12.90	13.30	1.29	1.33	12.5	995	17	1353	40	43	318	342	95	120
	N45H	13.30	13.70	1.33	1.37	12.7	1011	17	1353	43	46	342	366	95	120
	N48H	13.70	14.10	1.37	1.41	12.8	1019	17	1353	45	49	358	390	95	120
	N50H	14.00	14.40	1.40	1.44	13	1035	16	1273	47	51	374	406	95	120
SH	N30SH	10.90	11.40	1.09	1.14	10.3	820	20	1592	28	31	223	247	90	150
	N33SH	11.40	11.80	1.14	1.18	10.8	860	20	1592	31	34	247	271	90	150
	N35SH	11.80	12.30	1.18	1.23	11	876	20	1592	33	36	263	287	90	150
	N38SH	12.30	12.60	1.23	1.26	11.5	915	20	1592	36	39	287	310	90	150
	N40SH	12.60	12.90	1.26	1.29	11.8	939	20	1592	38	41	302	326	90	150
	N42SH	12.90	13.30	1.29	1.33	12.5	995	20	1592	40	43	318	342	90	150
	N45SH	13.30	13.70	1.33	1.37	12.7	1011	20	1592	43	46	342	366	90	150
	N48SH	13.70	14.10	1.37	1.41	12.8	1019	19	1512	45	49	358	390	90	150
	N50SH	13.90	14.30	1.39	1.43	13	1035	19	1512	47	51	374	406	90	150
UH	N30UH	10.90	11.40	1.09	1.14	10.2	812	25	1990	28	31	223	247	90	180
	N33UH	11.40	11.80	1.14	1.18	10.8	860	25	1990	31	34	247	271	90	180
	N35UH	11.80	12.30	1.18	1.23	11.2	896	25	1990	33	36	263	287	90	180
	N38UH	12.30	12.60	1.23	1.26	11.6	923	25	1990	36	39	287	310	90	180
	N40UH	12.60	12.90	1.26	1.29	12	955	25	1990	38	41	302	326	90	180
	N42UH	12.90	13.30	1.29	1.33	12.2	971	25	1990	40	43	318	342	90	180
	N45UH	13.30	13.60	1.33	1.36	12.3	979	24	1990	43	46	342	366	90	180
	N48UH	13.70	14.10	1.37	1.41	12.8	1019	24	1910	45	49	358	390	90	180
	N50UH	13.90	14.30	1.39	1.43	13	1035	24	1910	47	51	374	406	90	180
EH	N30EH	10.90	11.40	1.09	1.14	10.3	820	30	2388	28	31	223	247	90	200
	N33EH	11.40	11.80	1.14	1.18	10.8	860	30	2388	31	34	247	271	90	200
	N35EH	11.80	12.20	1.18	1.22	11.1	884	30	2388	33	36	263	287	90	200
	N38EH	12.20	12.60	1.22	1.26	11.3	923	30	2388	36	39	287	310	90	200
	N40EH	12.50	12.90	1.25	1.29	11.9	947	30	2388	38	41	302	326	90	200
	N42EH	12.80	13.30	1.28	1.33	12.2	971	29	2308	38	43	310	3442	90	200
AH	N28AH	10.50	11.00	1.05	1.10	9.8	780	35	2786	26	29	207	231	90	220
	N30AH	10.80	11.40	1.09	1.14	10.1	804	35	2786	28	31	223	247	90	220
	N33AH	11.40	11.80	1.14	1.18	10.2	812	335	2786	31	34	247	271	90	220
	N35AH	11.80	12.20	1.18	1.22	10.6	844	35	2786	33	36	263	287	90	220
	N38AH	12.20	12.60	1.22	1.26	11.6	923	33	2627	35	29	279	310	90	220
NdFeB T-Series Magnetic Properties
SH-T	N35SH-T	11.80	12.30	1.18	1.23	11	884	23	1592	33	36	263	287	90	160
	N38SH-T	12.30	12.60	1.23	1.26	11.6	923	23	1592	36	39	287	310	90	160
	N40SH-T	12.60	12.90	1.26	1.29	12	955	23	1592	38	41	302	326	90	160
	N42SH-T	12.90	13.30	1.29	1.33	12	955	23	1592	40	43	318	342	90	160
	N45SH-T	13.30	13.70	1.33	1.37	12.4	987	23	1592	43	46	342	366	90	160
	N48SHH-T	13.70	14.10	1.3	1.41	12.8	1019	20	1512	45	49	358	390	90	160
	N50SH-T	13.90	14.30	1.39	1.43	13	1035	20	1512	47	51	374	406	90	160
UH-T	N30UH-T	10.90	11.40	1.09	1.14	10.2	812	25	1990	28	31	223	247	90	190
	N33UH-T	11.40	11.80	1.14	1.18	10.8	860	25	1990	31	34	247	271	90	190
	N35UH-T	11.80	12.30	1.18	1.23	11.2	896	25	1990	33	36	263	287	90	190
	N38UH-T	12.30	12.60	1.23	1.26	11.6	923	25	1990	36	39	287	310	90	190
	N40UH-T	12.60	12.90	1.26	1.29	12	955	25	1990	38	41	302	326	90	190
	N42UH-T	12.90	13.30	1.29	1.33	12.2	971	25	1990	40	43	318	342	90	190
	N45UH-T	13.30	13.60	1.33	1.36	12.3	979	24	1990	43	46	342	166	90	190

NdFeB Magnet

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