High quality Sintered NdFeB magnets

0.1~100.0 USD

Min. Order:	100 pcs
Payment Terms:	L/C, D/P, D/A, T/T, WU
Supply Ability:	1200 tons yearly
Place of Origin:	Zhejiang

Company Profile

Ningbo LG Manufacturing Co., Ltd.

Location:	Ningbo, Zhejiang, China (Mainland)
Business Type:	Manufacturer, Trading Company, Distributor/Wholesaler
Main Products:	Strong Permanent SmCo Magnets, Sintered SmCo5 Samarium Cobalt Magnets, Rare Earth Permanent Magnet, N45 Arc Sintered Neodymium Motor Magnet, Industrial Sm2co17 Permanent Magnet

Product Detail

Model No.:	NingBoLG50
Means of Transport:	Ocean, Air, Land
Application:	Speaker Magnet
Shape:	Others
Type:	Permanent
Composite:	NdFeB Magnet
Brand Name:	LG
Shape:	cylinder
Compositon:	Ndfeb magnet
Grade:	N40SH
max working temp:	150 degree centigrade
HCJ:	>=20
Coating:	Ni
packing:	plywood
size:	custom-made
certificate:	ISO9001
delivery detailes:	15-25days
Production Capacity:	1200 tons yearly
Packing:	according to customers requirement
Delivery Date:	according to quantity

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Product Description

product name High quality Sintered NdFeB magnets

About NdFeB magnet:

Neodymium iron boron ( NdFeB) is a type of rare earth magnetic material.
NdFeB is the most advanced commercialized permanent magnet material available today.

This material has similar properties as the samarium cobalt except that it is more easily oxidized

and generally doesn't have the same temperature resistance.
However, NdFeB magnets have the highest energy products approaching 52MGOe and are

mechanically stronger than samarium cobalt magents. NdFeB material is more costly by weight than

ceramic or alnico but produces the highest amount of flux per unit of volume or mass amking it very economical for many applicantions. Their high energy products lend themselves to comnpact designs

that result in innovative applications and lower manufacturing costs.
Unprotected NdFeB magnets are subject to corronsion. Surface treatments has ben developed that

allow them to be used in most applications. These treatments include copper, silver,, gold, nickel,

zinc and tin plating and epoxy resin coating.
Beneficial characteristics of NdFeB magnets include their very high energy product, very high

coercive force, and moderate temperature stability. Drawbacks include lower mechanical strength,

and low corrosion resistance when not properly coated or plated.

Magnetic Grades and Temperature:

The Grade of a magent directly refers to the Maximum Energy Product of the material that composes the magnet. It in no way refers to the physical properties of the magnet. Grade is generally used to describe

how "strong" a permanent magnet material is. The energy products is specified in the unites Gauss Oersted.

One MGOe is 1,000,000 Gauss Obersted. A grade forty (N40) would have a Maximum Energy Product of 40 MGOe.The higher the grade the "stronger" the magnet.

Magnetic materials have a wide range of working temperatures. The following chart the various materials and their maximum working temperature. NdFeB material
comes in many different heat tolerances but as the heat tolerance increases the maximum available fulx density decreases:

Product: Neodymium Magnet - Rare earth magnets

1.Grades:

N30-N52, 35M-48M, 33H-42H, 35SH-45SH, 30UH-40UH, 28EH-38EH.

Magnet N-( N35, N38, N40, N42, N45, N48, N50,N52),

Magnet M-(N35M, N38M, N40M,N42M, N45M, N48M),

Magnet H-(N33H,N35H, N38H, N40H, N42H),

Magnet SH-( N35SH, N38SH, N40SH, N42SH,N45SH),

Magnet UH-( N30UH, N33UH, N35UH, N38UH,N40UH),

Magnet EH-(N28EH, N30EH, N33EH, N35EH,N38EH)

2.Size:

various customized: Block, Disc, Cylinder, Ring, Segment, Irregular, etc.

3.Coating:

Nickel, Ni-Cu-Ni, Zinc, white-blue Zn, Black epoxy resin, Gold and etc.

4.Shapes:

Cylinder,round,disc,rectangle,ring,countersunk,block,Arc coil and we can also manufacture the shape of magnet according to clients' requirement.

5.Package:

standard exporting carton or according to the customer requirments.

6.Materials:

Neodymium-Iron-Boron magnets, Sintered NdFeB magnets

7.Certification:

ISO9001,2008

8.Technology:

Utilizes new Neodymium Magnet - Rare earth magnets techniques and equipment such as Strip casting, HDDR technology

9.Magnetic properties:

a) High coercive force,

b) (BH)max from 33 to 53MGOe,

c) Max working temperature up to 230°C;

10.Applications:

a) Electro-acoustic field: such as loudspeaker, headphone, earphone, stage sound device, alarm, microphone and so on. Because of good performance, our magnets can provide sound equipments better sensitiveness and susceptibility.
b) Electric products: Permanent magnetic actuator vacuum circuit breaker, magneticlatchingrelay, watt-hour meter, watermeter, sensor, reed switch and so on.
c) Motor areas: VCM, CDVD-ROM, generator, electromotor, servo motor, vibration motor, step motor, DC motor, linear motor and so on. Our magnets with stable performance and high HCJ can work under high temperature which can guarantee your products work better.
d) mechanical equipment: magnetic separator, magnetic holder, and other magnetic machines.
e) Health care: nuclear magnetic resonance spectrometer, medical apparatus and instruments,
magnetic therapy and health care products, fuel-saving magnetizer and so on. Our stable permanent magnets used in health care areas will make people healthier.
f) Other fields: bags magnets, toy magnets, craft gifts and packaging, doors and windows magnets, magnetic locks, magnetic holding devices and so on.

Magnet Coating & Grade:

Coating and Anti-corrosive of NdFeB Magnet

CoatingNickelNiCuNiZincNi-SnNi-AuNi-AgEpoxy


Corrosiveb Resistance	Good	Excellent	Good	Good	Good	Good	Very Good
Color	Silver	Silver	White Blue	Silver	Gold	Silver	Blace/Gray

Technical data of sintered NdFeB Magnet

GradeBrmT(kGs)Hcb kA/m (kOe)Hcj kA/m (kOe)BH max kJ/m3 (MGOe)Max. Tw


N35	1170-1220(11.7-12.2)	≥ 868 ( ≥ 10.9)	≥ 955 ( ≥ 12)	263-287 (33-36)	≤ 80 °C
N38	1220-1250 (12.2-12.5)	≥ 899 ( ≥ 11.3)	≥ 955 ( ≥ 12)	287-310 (36-39)	≤ 80 °C
N40	1250-1280 (12.5-12.8)	≥ 907 ( ≥ 11.4)	≥ 955 ( ≥ 12)	302-326 (38-41)	≤ 80 °C
N42	1280-1320 (12.8-13.2)	≥ 915 ( ≥ 11.5)	≥ 955 ( ≥ 12)	318-342 (40-43)	≤ 80 °C
N45	1320-1380 (13.2-13.8)	≥ 923 ( ≥ 11.6)	≥ 955 ( ≥ 12)	342-366 (43-46)	≤ 80 °C
N48	1380-1420 (13.8-14.2)	≥ 923 ( ≥ 11.6)	≥ 876 ( ≥ 12)	366-390 (46-49)	≤ 80 °C
N50	1400-1450 (14.0-14.5)	≥ 796 ( ≥ 10.0)	≥ 876 ( ≥ 11)	382-406 (48-51)	≤ 60 °C
N52	1430-1480 (14.3-14.8)	≥ 796 ( ≥ 10.0)	≥ 876 ( ≥ 11)	398-422 (50-53)	≤ 60 °C
30M	1080-1130 (10.8-11.3)	≥ 796 ( ≥ 10.0)	≥ 1114 ( ≥ 14)	223-247 (28-31)	≤ 100 °C
33M	1130-1170 (11.3-11.7)	≥ 836 ( ≥ 10.5)	≥ 1114 ( ≥ 14)	247-263 (31-33)	≤ 100 °C
35M	1170-1220 (11.7-12.2)	≥ 868 ( ≥ 10.9)	≥ 1114 ( ≥ 14)	263-287 (33-36)	≤ 100 °C
38M	1220-1250 (12.2-12.5)	≥ 899 ( ≥ 11.3)	≥ 1114 ( ≥ 14)	287-310 (36-39)	≤ 100 °C
40M	1250-1280 (12.5-12.8)	≥ 923 ( ≥ 11.6)	≥ 1114 ( ≥ 14)	302-326(38-41)	≤ 100 °C
42M	1280-1320 (12.8-13.2)	≥ 955 ( ≥ 12.0)	≥ 1114 ( ≥ 14)	318-342 (40-43)	≤ 100 °C
45M	1320-1380 (13.2-13.8)	≥ 995 ( ≥ 12.5)	≥ 1114 ( ≥ 14)	342-366 (43-46)	≤ 100 °C
48M	1360-1430 (13.6-14.3)	≥ 1027 ( ≥ 12.9)	≥ 1114 ( ≥ 14)	366-390 (46-49)	≤ 100 °C
50M	1400-1450 (14.0-14.5)	≥ 1033 ( ≥ 13.0)	≥ 1114 ( ≥ 14)	382-406 (48-51)	≤ 100 °C
30H	1080-1130 (10.8-11.3)	≥ 796 ( ≥ 10.0)	≥ 1353 ( ≥ 17)	223-247 (28-31)	≤ 120 °C
33H	1130-1170 (11.3-11.7)	≥ 836 ( ≥ 10.5)	≥ 1353 ( ≥ 17)	247-271 (31-34)	≤ 120 °C
35H	1170-1220 (11.7-12.2)	≥ 868 ( ≥ 10.9)	≥ 1353 ( ≥ 17)	263-287 (33-36)	≤ 120 °C
38H	1220-1250 (12.2-12.5)	≥ 899 ( ≥ 11.3)	≥ 1353 ( ≥ 17)	287-310 (36-39)	≤ 120 °C
40H	1250-1280 (12.5-12.8)	≥ 923 ( ≥ 11.6)	≥ 1353 ( ≥ 17)	302-326 (38-41)	≤ 120 °C
42H	1280-1320 (12.8-13.2)	≥ 955 ( ≥ 12.0)	≥ 1353 ( ≥ 17)	318-342 (40-43)	≤ 120 °C
45H	1300-1360 (13-13.6)	≥ 963 ( ≥ 12.1)	≥ 1353 ( ≥ 17)	326-358 (43-46)	≤ 120 °C
48H	1370-1430 (13.7-14.3)	≥ 995 ( ≥ 12.5)	≥ 1353 ( ≥ 17)	366-390 (46-49)	≤ 120 °C
30SH	1080-1130 (10.8-11.3)	≥ 804 ( ≥ 10.1)	≥ 1592 ( ≥ 20)	223-247 (28-31)	≤ 150 °C
33SH	1130-1170 (11.3-11.7)	≥ 844 ( ≥ 10.6)	≥ 1592 ( ≥ 20)	247-271 (31-34)	≤ 150 °C
35SH	1170-1220 (11.7-12.2)	≥ 876 ( ≥ 11.0)	≥ 1592 ( ≥ 20)	263-287 (33-36)	≤ 150 °C
38SH	1220-1250 (12.2-12.5)	≥ 907 ( ≥ 11.4)	≥ 1592 ( ≥ 20)	287-310 (36-39)	≤ 150 °C
40SH	1240-1280 (12.5-12.8)	≥ 939 ( ≥ 11.8)	≥ 1592 ( ≥ 20)	302-326 (38-41)	≤ 150 °C
42SH	1280-1320 (12.8-13.2)	≥ 987 ( ≥ 12.4)	≥ 1592 ( ≥ 20)	318-342 (40-43)	≤ 150 °C
45SH	1320-1380 (13.2-13.8)	≥ 1003 ( ≥ 12.6)	≥ 1592 ( ≥ 20)	342-366 (43-46)	≤ 150 °C
28UH	1020-1080 (10.2-10.8)	≥ 764 ( ≥ 9.6)	≥ 1990 ( ≥ 25)	207-231 (26-29)	≤ 180 °C
30UH	1080-1130 (10.8-11.3)	≥ 812 ( ≥ 10.2)	≥ 1990 ( ≥ 25)	223-247 (28-31)	≤ 180 °C
33UH	1130-1170 (11.3-11.7)	≥ 852 ( ≥ 10.7)	≥ 1990 ( ≥ 25)	247-271 (31-34)	≤ 180 °C
35UH	1180-1220 (11.8-12.2)	≥ 860 ( ≥ 10.8)	≥ 1990 ( ≥ 25)	263-287 (33-36)	≤ 180 °C
38UH	1220-1250 (12.2-12.5)	≥ 876 ( ≥ 11.0)	≥ 1990 ( ≥ 25)	287-310 (36-39)	≤ 180 °C
40UH	1240-1280 (12.5-12.8)	≥ 899 ( ≥ 11.3)	≥ 1990 ( ≥ 25)	302-326 (38-41)	≤ 180 °C
28EH	1040-1090 (10.4-10.9)	≥ 780 ( ≥ 9.8)	≥ 2388 ( ≥ 30)	207-231 (26-29)	≤ 200 °C
30EH	1080-1130 (10.8-11.3)	≥ 812 ( ≥ 10.2)	≥ 2388 ( ≥ 30)	223-247 (28-31)	≤ 200 °C
33EH	1130-1170 (11.3-11.7)	≥ 836 ( ≥ 10.5)	≥ 2388 ( ≥ 30)	247-271 (31-34)	≤ 200 °C
35EH	1170-1220 (11.7-12.2)	≥ 876 ( ≥ 11.0)	≥ 2388 ( ≥ 30)	263-287 (33-36)	≤ 200 °C
38EH	1220-1250 (12.2-12.5)	≥ 899 ( ≥ 11.3)	≥ 2388 ( ≥ 30)	287-310 (36-39)	≤ 200 °C