Rare Earth Neodymium Magnets

RARE EARTH NEODYMIUM MAGNETS

Permanent Neodymium Magnets, Strong Neodymium Magnets, Sintered Neodymium Magnets

Rare Earth Neodymium magnets are mainly made of Neodymium Iron and Boron, with excellent magnetic property abundant raw material and reasonable prices, NdFeB Magnet can be used as an ideal magnet in mini-motor Permanent magnetic resonance sound device magnetic suspension system, magnetic transmission machine, and iatrical apparatus and etc.

For Rare Earth Neodymium Magnets, its surface is usually treated with some special methods. The surface treatment method includes Zine Nickel Tin Silver Gold plating Phosphor and Spray Epoxy Resin etc.

Sintered NdFeB Rare Earth Magnets are a kind of functional material that is necessary for basic industry and frontier science. In order to keep up with the rapid developing trend of Neodymium rare earth magnets production and application in the world, the factory-backed by its year’s professional experience and convenient well-situated facility continuously promotes the development and production in the field.

Magnetic Properties of Neodymium Magnets:

Grade	Remanence		Magnetic Induction		Intrinsic Coercivity		Max Magnetic Energy Product				Maximum Working Temperature≤
	Br ( KG)	Br (T)	Hcb (KOe)	Hcb (KA/m)	Hcj (KOe)	Hcj (KA/m)	(BH)max(MGOe)		(BH)max(KJ/m³)		℃
	Br ( KG)	Br (T)	Hcb (KOe)	Hcb (KA/m)	Hcj (KOe)	Hcj (KA/m)	Max	Min	Max	Min	℃
N35	≥11.8	≥1.18	≥10.8	≥860	≥12	≥960	37	33	295	263	N	≤80
N38	≥12.3	≥1.23	≥10.8	≥860	≥12	≥960	39	36	310	287
N40	≥12.7	≥1.27	≥11.0	≥876	≥12	≥960	41	38	327	302
N42	≥13.0	≥1.30	≥11.0	≥876	≥12	≥960	43	40	343	320
N45	≥13.3	≥1.33	≥11.0	≥876	≥12	≥960	46	42	366	335
N48	≥13.7	≥1.37	≥10.5	≥836	≥12	≥960	49	45	390	358
N50	≥14.0	≥1.40	≥10.5	≥836	≥12	≥960	51	47	406	374
N52	≥14.2	≥1.42	≥10.5	≥836	≥12	≥960	53	49	422	390
N54	≥14.4	≥1.44	≥10.5	≥836	≥11	≥876	55	51	438	406
N35M	≥11.8	≥1.18	≥10.8	≥860	≥14	≥1114	37	33	295	263	M	≤100
N38M	≥12.3	≥1.23	≥11.0	≥876	≥14	≥1114	39	36	310	287
N40M	≥12.7	≥1.27	≥11.5	≥915	≥14	≥1114	41	38	327	302
N42M	≥13.0	≥1.30	≥11.8	≥939	≥14	≥1114	43	40	343	320
N45M	≥13.3	≥1.33	≥12.0	≥956	≥14	≥1114	46	42	366	335
N48M	≥13.7	≥1.37	≥12.2	≥972	≥14	≥1114	49	45	390	358
N50M	≥14.0	≥1.40	≥12.5	≥995	≥14	≥1114	51	47	406	374
N52M	≥14.2	≥1.42	≥12.5	≥995	≥14	≥1114	53	49	422	390
N33H	≥11.4	≥1.14	≥10.6	≥844	≥17	≥1350	35	31	279	247	H	≤120
N35H	≥11.8	≥1.18	≥10.8	≥860	≥17	≥1350	37	33	295	263
N38H	≥12.3	≥1.23	≥11.0	≥876	≥17	≥1350	39	36	310	287
N40H	≥12.7	≥1.27	≥11.5	≥916	≥17	≥1350	41	38	327	302
N42H	≥13.0	≥1.30	≥11.8	≥940	≥17	≥1350	43	40	343	320
N45H	≥13.3	≥1.33	≥12.0	≥955	≥17	≥1350	46	42	366	335
N48H	≥13.6	≥1.36	≥12.2	≥971	≥17	≥1350	49	45	390	358
N50H	≥14	≥1.4	≥12.5	≥995	≥17	≥1350	51	47	406	374
N52H	≥14.3	≥1.43	≥12.5	≥995	≥17	≥1350	53	49	422	390
N33SH	≥11.4	≥1.14	≥10.6	≥844	≥20	≥1592	35	31	279	247	SH	≤150
N35SH	≥11.8	≥1.18	≥10.8	≥860	≥20	≥1592	37	33	295	263
N38SH	≥12.3	≥1.23	≥11.0	≥876	≥20	≥1592	39	36	310	287
N40SH	≥12.6	≥1.26	≥11.5	≥916	≥20	≥1592	41	38	327	302
N42SH	≥12.9	≥1.29	≥11.8	≥940	≥20	≥1592	43	40	343	320
N45SH	≥13.2	≥1.32	≥12.0	≥955	≥20	≥1592	46	42	366	335
N48SH	≥13.6	≥1.36	≥12.2	≥971	≥20	≥1592	49	45	390	358
N50SH	≥14	≥1.4	≥12.5	≥995	≥20	≥1592	51	47	406	374
N33UH	≥11.4	≥1.14	≥10.6	≥844	≥25	≥1990	35	31	279	247	UH	≤180
N35UH	≥11.8	≥1.18	≥10.8	≥860	≥25	≥1990	37	33	295	263
N38UH	≥12.3	≥1.23	≥11.0	≥876	≥25	≥1990	39	36	310	287
N40UH	≥12.6	≥1.26	≥11.5	≥916	≥25	≥1990	41	38	327	302
N42UH	≥12.9	≥1.29	≥11.8	≥940	≥25	≥1990	43	40	343	320
N45UH	≥13.2	≥1.32	≥12.0	≥955	≥25	≥1990	46	42	366	335
N48UH	≥13.6	≥1.36	≥12.2	≥971	≥25	≥1990	49	45	390	358
N28EH	≥10.4	≥1.04	≥9.50	≥756	≥30	≥2388	30	26	239	207	EH	≤200
N30EH	≥10.8	≥1.08	≥9.50	≥756	≥30	≥2388	32	28	255	223
N33EH	≥11.4	≥1.14	≥10.6	≥844	≥30	≥2388	35	31	279	247
N35EH	≥11.8	≥1.18	≥10.8	≥860	≥30	≥2388	37	33	295	263
N38EH	≥12.3	≥1.23	≥11.0	≥876	≥30	≥2388	39	36	310	287
N40EH	≥12.6	≥1.26	≥11.5	≥916	≥30	≥2388	41	38	327	302
N42EH	≥12.9	≥1.29	≥11.8	≥940	≥30	≥2388	43	41	343	320
N45EH	≥13.2	≥1.32	≥12.0	≥955	≥30	≥2388	46	42	366	335
N30TH	≥10.8	≥1.08	≥9.50	≥756	≥35	≥2786	32	28	255	223	TH	≤220
N33TH	≥11.4	≥1.14	≥10.6	≥844	≥35	≥2786	35	31	279	247
N35TH	≥11.8	≥1.18	≥11.0	≥876	≥35	≥2786	37	33	295	263
N38TH	≥12.2	≥1.22	≥11.0	≥876	≥33	≥2627	39	36	310	287

1. The above-mentioned data of magnetic parameters are given at room temperature.

2. The above-mentioned grades are our basic grades. We also have T (for instance 35SHT, etc.) and L-T (for instance L-38SHT, etc.) series grades which are derived from these basic grades. The main properties of the derived grades are corresponding to those of the basic grades.

3. The max working temperature, which the sampling specification(Permanent Magnet:φ10×7) to heat up to the regular temperature for the lay of a long time(general 1000H.). Then take this sampling to cool attained room temperature. The irreversible loss of magnetic flux is less than 5%, This max keeps temperature definiteness which is the permanent material should be accepted by the max temperature. The sign: Tw, The unit: Kor ℃

The maximum working temperature of the magnet is changeable due to grade, operating point, coating, and environmental factors.

Chemical Composition of Neodymium Magnets:

Chemical analysis for sintering NdFeB magnets material based on intermetallic compounds RE2Fe14B,main composition is NdFeB magnet is (RE), (Fe) (B),thereinto thulium (Nd), in order to obtain different performance can instead by thulium of (Dy),(Pr) etc. also other metal can instead Fe,for example (Co), (Al) etc., smaller content of boron, but it affect tetragonal crystal intermetallics, making the intermetallics with high magnetization,uniaxial anisotropy and curie temperature.

Physical Properties of Neodymium Magnets:

Temp.Coeff.of Br	-0.11%/ °C	Temp.Coeff.of Hc	-0.60%/ °C
Density	7.3-7.5g/cm 3	Electrical Resistivity	114 .cm
Vickers Hardness	600Hv	Flexural Resistivity	25kg/mm
Tensile Strength	8.0Kg/mm2	Coeff. Of Thermal Expansion	4X10 -6 / °C
Specific Heat	0.12Kcal/Kg	Thermal Conductivity	7.7kcal/[m.h. °C
Young ¡s Modulus	1.6X10[11]N/m2	Rigidity	0.64N/m2
Poisson¡¯s Ratio	0.24	Compressibility	9.8×10-12m2/N
Curie Temperature	310-340 °C

Demagnetization Curves of Neodymium Magnets:

Demagnetization Curves of Neodymium magnets

Dimensions of Neodymium Magnets:

Size		Outer Diameter/Length	Inner diameter/Width	Thickness
	Maximum	150mm		50.00mm
	Minimum	1mm		0.50mm
	Maximum	100mm	100mm	50.00mm
	Minimum	0.5mm	0.50mm	0.50mm
	Maximum	150mm	140mm	50.00mm
	Minimum	1.00mm	0.60mm	0.50mm
	The segment, Arc, and other irregular shapes can be made according to customer’s samples or drawings.

Applications of Neodymium Magnets:

With its excellent magnetic property, abundant raw material and reasonable prices, rare-earth permanent magnet can be used as an ideal magnet in mini-motor, permanent-magnet instrument,electronic industry, auto industry, petro-chemical industry,nuclear magnetic resonance,sound device, magnetic suspension system, magnetic transmission machine and magnetotherapy apparatus etc.

Manufacturing Process of Neodymium Magnets:

Manufacturing Process of neodymium magnets

Surface Treatment of Neodymium Magnets:

On the basis of producing high-quality magnetic materials, Sinoneo has been researching and developing updated surface protection technology. Sinoneo can provide customers with high-quality coatings and plating of Zinc, Tin, Nickle, Epoxy, etc.

During the process of coating and plating, Sinoneo attaches great importance to environmental protection, all coating meets the requirements of ROHS and RECH.

Coating		Code	Color	Minimum Local Thickness	Merge etching time			Working temperature
Coating		Code	Color	Minimum Local Thickness	Neutral salt Spray test	Humid heat test	Pressure Vessel test	Working temperature
Ni(Barrel plating)		Ni	Sliver	10	24	300	48	<200
Ni(rack plating)		Ni	Sliver	10	8	300	48
NiCuNi(barrel plating)		NiCuNi	Sliver	10	72	500	48
NiCuNi(rack plating)		NiCuNi	Sliver	10	48	500	48
Zinc	White zinc	Zn	White Zinc	4	24	48	/	<170
Zinc	Color zinc	CZn/Zn	Color Zinc	6	48	48	/	<170
Chemical plating Ni		Ni	Silver	12	96	500	48	<200
Electrophoresis epoxy		Epoxy	Black,grey	10	48-96	120	0-24	<130
Parylene		Parylene	Colorless and transparent	12.7-25.4 microns Meet the MIL-I-46058C standard	48	/	/	<130

To offer you our magnets price, please offer the following details:

Magnets grade: From N35 To N50, from N Series to UH Series.
Magnets size: As the drawing
Magnetism direction: Which direction to oriented The north pole and south pole
Magnets coating: Nickel, Zn, Black Epoxy, AG, Au, etc.
Quantities: More mass order quantities.More Lower the prices.