sintered Rare earth NdFeB magnet from China manufacturer - Ningbo Xionghai Magnetics Co., Ltd.

Price:	0.01~20.0 USD
Payment Terms:	T/T,L/C;NdFeB Magnets
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: Xionghaimagnets

Production Capacity: 100 tons per month

Delivery Date: 15days

Shape: Others

Composite: Rare Earth Magnet

Means of Transport: Ocean,Air;NdFeB Magnets

Packing: Neutral packing

Application: Motor Magnet

Type: Permanent

Brand Name: Xionghai

NdFeB Magnets.
Sizes: according to your requirements
Shapes: disc, cylinder, sphere, block ,ring ,tile, arc, and etc.
Coatings: Ni-Cu-Ni,Zn,Epoxy.

NdFeB Magnets are dark gray alloy. They are composed of Neodymium, Iron and Boron. Density of Neodymium magnets is .27Lb/in3 (7.5g/cm3).
Neodymium magnets are manufactured in a metallurgy process through alloying, crushing, powdering, pressing w/magnetic orientation, sintering, then cutting, coating, inspecting and packing before shipment.

Neodymium magnets offer the highest (BH)max and high Hci
(BH)max, the Maximum Energy Product, of Neodymium magnets is highest of any kind of permanent magnets today in the world. (BH)max at different grades of Neodymium magnets is 27 to 52 MGOe.

Neodymium magnets have extremely resistance to demagnetization with Hci, Intrisic coercive force, over 12,000 Oe.
Because of very high (BH)max and Hci, Neodymium magnets could be used as a reversible medium for large amount of energy transformation in miniaturized application where a strong magnetic demagnetization field exists , such as computer hard drive.
Armstrong Magnetics N40 Neodymium magnets in disk and rectangle shapes for customers' immediate needs and accept special orders for custom Neodymium magnets.

Neodymium magnets are most powerful of any kind of magnetic materials
Br of Neodymium magnets are much more than 11,000 Gauss. Therefore, Neodymium magnets have strong holding strength on metal surface and could be used as component for holding, separating, etc.
Neodymium magnets must be carefully handled to avoid personal injury and material damage due to its extremely magnetic strength and brittle property.

Neodymium magnets are sensitive to temperature change and even lose magnet properties at high temperature
Neodymium magnets lose -0.09 ~ -0.13% of Br/°C and can work stably under 80°C for low Hci Neodymium magnets and 150°C for high Hci Neodymium magnets.

Neodymium magnets are corrupted in humid environment
Surface protection is strongly recommended, such as plating, varnishing and encapsulating.

Neodymium magnets are hard and brittle
Neodymium magnets can be abrasively machined with coolant served to absorb heating and dust. Without coolant, rare earth magnets could crack and chip by the heat produced during high speed cutting or grinding, and the sparks contain the easily oxidized grinding dust that could cause fire!

Tolerance of Neodymium magnets
Unless otherwise specified, tolerance on dimension of magnetization is ±.005". Other dimensions are ±1.5% or ±.010", whichever is greater.

Xionghai magnet preparesits anisotropic powders by either casting an alloy melt into a mold, or strip casing. Strip Casting offers the advantage of better chemical stability. Subsequently, the ingot from the mold or the flakes from Strip Casting are pulverized to a uniform grain/particle size. The best method for obtaining the desired grain size is by HDDR. The HDDR [hydrogenation-decomposition-desorption-recombination] process yields a more homogenous particle size with a minimum of α-Fe, and Nd-rich phases. Anisotropic Nd-Fe-B, HDDR powders prepared from strip cast alloys are used for the HAST [Highly Accelerated Stress Test] grades of NdFeB Magnets, including N, H, SH, UH, EH, and AH grades.

Improved Corrosion Resistance:
The HAST protocol used on our neodymium iron boron magnets can qualitatively reflect the service life of the magnet. This test exposes the magnet to 130°C, 95% RH, at 2 ATM for more than one day. The magnet is massed before and after the test. Our magnets measure a weight loss of less than 5 mg/cm².

High Maximum Working Temperature:

Our AH series of NdFeB magnets have working temperatures up to 240°C.

Applications: sensors, motors, rotors, wind turbine,wind generators, loudspeakers, magnetic hooks, filters automobiles, Toys, micro-special electric machinery, audio equipments, electronic industry, auto industry, magnetic transmission gears and magnet therapy equipment, sorption, ads, teaching tools and other office automation, magnet toys, aero generators, magnetic toys, magnetic separators, magnetic bracelets, magnetic necklaces, copiers, synchrotrons, radiation sources, free electron lasers, agriculture, detection earthquake, and so on.

The Magnetic Properties of Neodymium Permanent Magnete Super Strong Magneti Neodimio Rare Earth Aimant Neodyme:

Magnetic Properties of Sintered NdFeB Magnets

Grade	Remanence		Coercivity Force		Intrinsic Coercive Force		Max. Energy Product		maximum Operating Temp.
	Br		Hcb		Hcj		( BH ) max
	mT	kGs	kA/m	kOe	kA/m	kOe	kJ/m3	MGOe
N35	1170-1220	11.7-12.2	≥868	≥10.9	≥955	≥12	263-287	33-36	80 ℃
N38	1220-1250	12.2-12.5	≥899	≥11.3	≥955	≥12	287-310	36-39	80 ℃
N40	1250-1280	12.5-12.8	≥907	≥11.4	≥955	≥12	302-326	38-41	80 ℃
N42	1280-1320	12.8-13.2	≥915	≥11.5	≥955	≥12	318-342	40-43	80 ℃
N45	1320-1380	13.2-13.8	≥923	≥11.6	≥955	≥12	342-366	43-46	80 ℃
N48	1380-1420	13.8-14.2	≥923	≥11.6	≥876	≥12	366-390	46-49	80 ℃
N50	1400-1450	14.0-14.5	≥796	≥10.0	≥876	≥11	382-406	48-51	60 ℃
N52	1430-1480	14.3-14.8	≥796	≥10.0	≥876	≥11	398-422	50-53	60 ℃
33M	1130-1170	11.3-11.7	≥836	≥10.5	≥1114	≥14	247-263	31-33	100 ℃
35M	1170-1220	11.7-12.2	≥868	≥10.9	≥1114	≥14	263-287	33-36	100 ℃
38M	1220-1250	12.2-12.5	≥899	≥11.3	≥1114	≥14	287-310	36-39	100 ℃
40M	1250-1280	12.5-12.8	≥923	≥11.6	≥1114	≥14	302-326	38-41	100 ℃
42M	1280-1320	12.8-13.2	≥955	≥12.0	≥1114	≥14	318-342	40-43	100 ℃
45M	1320-1380	13.2-13.8	≥995	≥12.5	≥1114	≥14	342-366	43-46	100 ℃
48M	1360-1430	13.6-14.3	≥1027	≥12.9	≥1114	≥14	366-390	46-49	100 ℃
50M	1400-1450	14.0-14.5	≥1033	≥13.0	≥1114	≥14	382-406	48-51	100 ℃
33H	1130-1170	11.3-11.7	≥836	≥10.5	≥1353	≥17	247-271	31-34	120 ℃
35H	1170-1220	11.7-12.2	≥868	≥10.9	≥1353	≥17	263-287	33-36	120 ℃
38H	1220-1250	12.2-12.5	≥899	≥11.3	≥1353	≥17	287-310	36-39	120 ℃
40H	1250-1280	12.5-12.8	≥923	≥11.6	≥1353	≥17	302-326	38-41	120 ℃
42H	1280-1320	12.8-13.2	≥955	≥12.0	≥1353	≥17	318-342	40-43	120 ℃
45H	1300-1360	13-13.6	≥963	≥12.1	≥1353	≥17	326-358	43-46	120 ℃
48H	1370-1430	13.7-14.3	≥995	≥12.5	≥1353	≥17	366-390	46-49	120 ℃
33SH	1130-1170	11.3-11.7	≥844	≥10.6	≥1592	≥20	247-271	31-34	150 ℃
35SH	1170-1220	11.7-12.2	≥876	≥11.0	≥1592	≥20	263-287	33-36	150 ℃
38SH	1220-1250	12.2-12.5	≥907	≥11.4	≥1592	≥20	287-310	36-39	150 ℃
40SH	1240-1280	12.5-12.8	≥939	≥11.8	≥1592	≥20	302-326	38-41	150 ℃
42SH	1280-1320	12.8-13.2	≥987	≥12.4	≥1592	≥20	318-342	40-43	150 ℃
45SH	1320-1380	13.2-13.8	≥1003	≥12.6	≥1592	≥20	342-366	43-46	150 ℃
28UH	1020-1080	10.2-10.8	≥764	≥9.6	≥1990	≥25	207-231	26-29	180 ℃
30UH	1080-1130	10.8-11.3	≥812	≥10.2	≥1990	≥25	223-247	28-31	180 ℃
33UH	1130-1170	11.3-11.7	≥852	≥10.7	≥1990	≥25	247-271	31-34	180 ℃
35UH	1180-1220	11.8-12.2	≥860	≥10.8	≥1990	≥25	263-287	33-36	180 ℃
38UH	1220-1250	12.2-12.5	≥876	≥11.0	≥1990	≥25	287-310	36-39	180 ℃
40UH	1240-1280	12.5-12.8	≥899	≥11.3	≥1990	≥25	302-326	38-41	180 ℃
42UH	1280-1320	12.8-13.2	≥899	≥11.3	≥1990	≥25	318-342	40-43	180 ℃
28EH	1040-1090	10.4-10.9	≥780	≥9.8	≥2388	≥30	207-231	26-29	200 ℃
30EH	1080-1130	10.8-11.3	≥812	≥10.2	≥2388	≥30	223-247	28-31	200 ℃
33EH	1130-1170	11.3-11.7	≥836	≥10.5	≥2388	≥30	247-271	31-34	200 ℃
35EH	1170-1220	11.7-12.2	≥876	≥11.0	≥2388	≥30	263-287	33-36	200 ℃
38EH	1220-1250	12.2-12.5	≥899	≥11.3	≥2388	≥30	287-310	36-39	200 ℃
40EH	1250-1280	12.5-12.8	≥899	≥11.3	≥2388	≥30	287-310	38-41	200 ℃
28AH	1040-1080	10.4-10.8	≥787	≥9.9	≥2624	≥33	207-231	26-29	230 ℃
30AH	1080-1130	10.8-11.3	≥819	≥10.3	≥2624	≥33	223-247	28-31	230 ℃
33AH	1130-1170	11.3-11.7	≥843	≥10.6	≥2624	≥33	247-271	31-34	230 ℃
35AH	1170-1220	11.7-12.2	≥876	≥11.0	≥2624	≥33	263-287	33-36	230 ℃

The Physical Properties of Neodymium Permanent Magnete Super Strong Magneti Neodimio Rare Earth Aimant Neodyme:

Parameters	Units	Indicators
Density	g/cm³	≥7.3
Home temperature	℃	310-340
BrReversible temperature coefficient	℃/%	-0.100~-0.130
HcjReversible temperature coefficient	℃/%	0.40~0.70
Compressive strength	N/mm2	1050
Bending strength	N/mm2	250
Tensile strength	N/mm2	80
Webster Hardness		600
Coefficient of thermal expansion(20 to 200℃)	10-6/k	∥5⊥-1.5
Specific heat	J/(Kg.K)	460
Thermal conductivity	W/(m.K)	9
Resistivity	μΩ.cm	150

The Surface Coatings of Neodymium Permanent Magnete Super Strong Magneti Neodimio Rare Earth Aimant Neodyme:

Surface	Coating	thickness(um)	Coating Color	SST (hours)	PCT (hours)
Nickel	Ni+Ni Ni+Cu+Ni	10~20	Bright Silvery	24~72	24~72
Black Nickel	Ni+Cu+Ni	10~20	Bright Black	48~96	48
Cr3+Zinc	Zn Cr-Zn	5~8	Bright Blue Shining Color	16~48 36~72	\
Sn	Ni+Cu+Ni+Sn	10~25	Silver	36~72	48
Au	Ni+Cu+Ni+Au	10~25	Gold	12	48
Ag	Ni+Cu+Ni+Ag	10~25	Silver	12	48
Epoxy	Epoxy Ni+Cu+Epoxy Zn+Epoxy	10-20 15-30 15-25	Black / Grey	48 72~108 72~108
Passivation	\	1-3	Dark Grey	Temporary Protection	\
Phosphated	\	1-3	Dark Grey	Temporary Protection	\

Magnetizing:

1.Thickness Magnetized

2.Axial magnetized

3.Diametral magnetized

4.Multi-poles magnetized

5.Radi al magnetized

.Common uses in different fields:

§ Security systems § Magnetic separators

§ Magnetic resonance imaging § Health bandages and plasters

§ Specialty door catches § Filters & strainers

§ Sensors § Speakers

§ Microphone/earphone § High performance motors

§ Brushless motor § Micromotor / servo motor

§ VCM(voice coil motor) § Automobiles

§ Magnetic coupling § Magnetic Chuck

§ Magnetic toy § Magnetic tools

Pictures of Neodymium RingMagnet / Sintered NdFeB magnet / Neodymium Iron Boron Magnet / Sehr Starke Magnete:

sintered ndfeb magnet Neodymium (NdFeB) Magnets Rare Earth N33,N35,N38,N40,N42,N45,N48,N50,N52, (M, H, SH, EH, UH,AH )