Ring Sintered Magnet Material for Motor/ Permanent Magnet Loudspeaker

Product Description

Product Name: Rare Earth Neodymium(NdFeB) Magnets
Materials Trademark:
N35-N50, 33M-48M, 30H-45H, 27SH-45SH, 25UH-40UH, 23EH-38EH
All Trademarks are available.
Working Temperature: 80-200(° C)
Product Feature:
Produced by the powder metallurgical method with chemical composition of ND2Fe14B
Very brittle and hard
Poorest corrosion resistance of all commercial magnetic material
High resistance to magnetic demagnetization
Excellent cost to performance ratio
Reasonable temperature stability
Not suitable for application which exposed to high temperatures
NdFeB permanent magnet is mainly used in Micro-motor, Electronic Industry, Car Industry, Petrochemical, NMR devices, Sound equipments, Maglev System, Magnetic drive and Magnetotherapy system, and its also used in Motorbikes, Car oil-duct's magnetization, with the aim of saving oil.
Earth permanent magnet (NdFeB) has the strongest magnetism nowadays. It does not only has high remanence, high coercivity, high energy product, and high-functional, but also it can processed into a variety of sizes easily. Now, it is widely used in avigation, spaceflight, electron, electrical sound, electrical machinery, apparatus, meters, medical technology, and especially apply to develop high-performance, small and light replacements.
Our factory produce and manufacture magnets according to customer's design on shape, dimension, grades, coatings etc.
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. Original factory.
If you haven't been able to find your desired size or strength in our website?
We can send you a price quotation for exactly the magnet you wish...At no obligation to you. Here's how it works:
We can offer you not only standard forms (Disc/Rod, Block, Cube, Sphere, Ring). But also special demands, like borings, grades, countersinks, pole markers, etc.
Tell us which features you desire in a magnet (shape, size, strength, surface coating, and temperature resistance) and the quantity you will require.
You will receive our price quotation via e-mail within a day.
You will be under no obligation to buy.
When inquiring or ordering, please send us following information
1. Type of magnet (material & grade)
2. Quantity (annual and per shipment)
3. Shape and dimensions (drawing if necessary)
4. Direction of magnetization
5. Magnetized or unmagnetized
6. Details of surface treatment
7. Application if possible
8. Other information and/or requirements
We hope to cooperate with you. Thank you.

Magnetic properties of Sintered Neodymium Magnet (NdFeB magnet):
Grade	Remanence	Coercive Force	Intrinsic Coercive Force	Max. energy product	Max. Operating Temperature
	Br mT (kGs)	Hcb kA/m (kOe)	Hcj kA/m (kOe)	( BH )max kJ/m 3 (MGOe)	Tw
N35	1170-1220 (11.7-12.2)	≥ 868 ( ≥ 10.9)	≥ 955 ( ≥ 12)	263-287 (33-36)	80 deg
N38	1220-1250 (12.2-12.5)	≥ 899 ( ≥ 11.3)	≥ 955 ( ≥ 12)	287-310 (36-39)	80 deg
N40	1250-1280 (12.5-12.8)	≥ 907 ( ≥ 11.4)	≥ 955 ( ≥ 12)	302-326 (38-41)	80 deg
N42	1280-1320 (12.8-13.2)	≥ 915 ( ≥ 11.5)	≥ 955 ( ≥ 12)	318-342 (40-43)	80 deg
N45	1320-1380 (13.2-13.8)	≥ 923 ( ≥ 11.6)	≥ 955 ( ≥ 12)	342-366 (43-46)	80 deg
N48	1380-1420 (13.8-14.2)	≥ 923 ( ≥ 11.6)	≥ 876 ( ≥ 12)	366-390 (46-49)	80 deg
N50	1400-1450 (14.0-14.5)	≥ 796 ( ≥ 10.0)	≥ 876 ( ≥ 11)	382-406 (48-51)	60 deg
N52	1430-1480 (14.3-14.8)	≥ 796 ( ≥ 10.0)	≥ 876 ( ≥ 11)	398-422 (50-53)	60 deg
30M	1080-1130 (10.8-11.3)	≥ 796 ( ≥ 10.0)	≥ 1114 ( ≥ 14)	223-247 (28-31)	100 deg
33M	1130-1170 (11.3-11.7)	≥ 836 ( ≥ 10.5)	≥ 1114 ( ≥ 14)	247-263 (31-33)	100 deg
35M	1170-1220 (11.7-12.2)	≥ 868 ( ≥ 10.9)	≥ 1114 ( ≥ 14)	263-287 (33-36)	100 deg
38M	1220-1250 (12.2-12.5)	≥ 899 ( ≥ 11.3)	≥ 1114 ( ≥ 14)	287-310 (36-39)	100 deg
40M	1250-1280 (12.5-12.8)	≥ 923 ( ≥ 11.6)	≥ 1114 ( ≥ 14)	302-326 (38-41)	100 deg
42M	1280-1320 (12.8-13.2)	≥ 955 ( ≥ 12.0)	≥ 1114 ( ≥ 14)	318-342 (40-43)	100 deg
45M	1320-1380 (13.2-13.8)	≥ 995 ( ≥ 12.5)	≥ 1114 ( ≥ 14)	342-366 (43-46)	100 deg
48M	1360-1430 (13.6-14.3)	≥ 1027 ( ≥ 12.9)	≥ 1114 ( ≥ 14)	366-390 (46-49)	100 deg
50M	1400-1450 (14.0-14.5)	≥ 1033 ( ≥ 13.0)	≥ 1114 ( ≥ 14)	382-406 (48-51)	100 deg
30H	1080-1130 (10.8-11.3)	≥ 796 ( ≥ 10.0)	≥ 1353 ( ≥ 17)	223-247 (28-31)	120 deg
33H	1130-1170 (11.3-11.7)	≥ 836 ( ≥ 10.5)	≥ 1353 ( ≥ 17)	247-271 (31-34)	120 deg
35H	1170-1220 (11.7-12.2)	≥ 868 ( ≥ 10.9)	≥ 1353 ( ≥ 17)	263-287 (33-36)	120 deg
38H	1220-1250 (12.2-12.5)	≥ 899 ( ≥ 11.3)	≥ 1353 ( ≥ 17)	287-310 (36-39)	120 deg
40H	1250-1280 (12.5-12.8)	≥ 923 ( ≥ 11.6)	≥ 1353 ( ≥ 17)	302-326 (38-41)	120 deg
42H	1280-1320 (12.8-13.2)	≥ 955 ( ≥ 12.0)	≥ 1353 ( ≥ 17)	318-342 (40-43)	120 deg
45H	1300-1360 (13-13.6)	≥ 963 ( ≥ 12.1)	≥ 1353 ( ≥ 17)	326-358 (43-46)	120 deg
48H	1370-1430 (13.7-14.3)	≥ 995 ( ≥ 12.5)	≥ 1353 ( ≥ 17)	366-390 (46-49)	120 deg
30SH	1080-1130 (10.8-11.3)	≥ 804 ( ≥ 10.1)	≥ 1592 ( ≥ 20)	223-247 (28-31)	150 deg
33SH	1130-1170 (11.3-11.7)	≥ 844 ( ≥ 10.6)	≥ 1592 ( ≥ 20)	247-271 (31-34)	150 deg
35SH	1170-1220 (11.7-12.2)	≥ 876 ( ≥ 11.0)	≥ 1592 ( ≥ 20)	263-287 (33-36)	150 deg
38SH	1220-1250 (12.2-12.5)	≥ 907 ( ≥ 11.4)	≥ 1592 ( ≥ 20)	287-310 (36-39)	150 deg
40SH	1240-1280 (12.5-12.8)	≥ 939 ( ≥ 11.8)	≥ 1592 ( ≥ 20)	302-326 (38-41)	150 deg
42SH	1280-1320 (12.8-13.2)	≥ 987 ( ≥ 12.4)	≥ 1592 ( ≥ 20)	318-342 (40-43)	150 deg
45SH	1320-1380 (13.2-13.8)	≥ 1003 ( ≥ 12.6)	≥ 1592 ( ≥ 20)	342-366 (43-46)	150 deg
28UH	1020-1080 (10.2-10.8)	≥ 764 ( ≥ 9.6)	≥ 1990 ( ≥ 25)	207-231 (26-29)	180 deg
30UH	1080-1130 (10.8-11.3)	≥ 812 ( ≥ 10.2)	≥ 1990 ( ≥ 25)	223-247 (28-31)	180 deg
33UH	1130-1170 (11.3-11.7)	≥ 852 ( ≥ 10.7)	≥ 1990 ( ≥ 25)	247-271 (31-34)	180 deg
35UH	1180-1220 (11.8-12.2)	≥ 860 ( ≥ 10.8)	≥ 1990 ( ≥ 25)	263-287 (33-36)	180 deg
38UH	1220-1250 (12.2-12.5)	≥ 876 ( ≥ 11.0)	≥ 1990 ( ≥ 25)	287-310 (36-39)	180 deg
40UH	1240-1280 (12.5-12.8)	≥ 899 ( ≥ 11.3)	≥ 1990 ( ≥ 25)	302-326 (38-41)	180 deg
28EH	1040-1090 (10.4-10.9)	≥ 780 ( ≥ 9.8)	≥ 2388 ( ≥ 30)	207-231 (26-29)	200 deg
30EH	1080-1130 (10.8-11.3)	≥ 812 ( ≥ 10.2)	≥ 2388 ( ≥ 30)	223-247 (28-31)	200 deg
33EH	1130-1170 (11.3-11.7)	≥ 836 ( ≥ 10.5)	≥ 2388 ( ≥ 30)	247-271 (31-34)	200 deg
35EH	1170-1220 (11.7-12.2)	≥ 876 ( ≥ 11.0)	≥ 2388 ( ≥ 30)	263-287 (33-36)	200 deg
38EH	1220-1250 (12.2-12.5)	≥ 899 ( ≥ 11.3)	≥ 2388 ( ≥ 30)	287-310 (36-39)	200 deg
30AH	1080-1120 (10.8-11.2)	≥ 812 ( ≥ 10.2)	≥ 2785 ( ≥ 35)	223-255 (28-32)	220 deg
33AH	1120-1170 (11.2-11.7)	≥ 812 ( ≥ 10.2)	≥ 2785 ( ≥ 35)	247-271 (31-34)	220 deg
Physical and Mechanical Properties of Neodymium Magnet:
Thermal Conductivity			7.7 kcal/m-h-° C
Young' s Modulus			1.7 x 104 kg/mm2
Bending Strength			24 kg/mm2
Compressive Strength			80 kg/mm2
Electrical Resistivity			160 µ -ohm-cm/cm2
Density			7.4-7.55 g/cm3
Vickers Hardness			500 - 600
Available coatings for sintered Neodymium Magnet (NdFeB magnet):
Available Coatings:
Surface	Coating	Thickness (Microns)	Color	Resistance
Passivation		1	Silver Grey	Temporary Protection
Nickel	Ni+Ni	10.0-20	Bright Silver	Excellent against Humidity
	Ni+Cu+Ni
Zinc	Zn	8.0-20	Bright Blue	Good Against Salt Spray
	C-Zn		Shinny Color	Excellent Against Salt Spray
Tin	Ni+Cu+Sn	15-20	Silver	Superior Against Humidity
Gold	Ni+Cu+Au	10.0-20	Gold	Superior Against Humidity
Copper	Ni+Cu	10.0-20	Gold	Temporary Protection
Epoxy	Epoxy	15-25	Black, Red, Grey	Excellent Against Humidity & Salt Spray
	Ni+Cu+Epoxy
	Zn+Epoxy
Chemical	Ni	10.0-20	Silver Grey	Excellent Against Humidity
Parylene	Parylene	5.0-20	Grey	Excellent Against Humidity, Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria. FDA Approved.

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