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Rare Earth Neodymium Magnets

Meank provides powerful cylinder magnetsfor sale at good wholesale prices. Our rare earth giant neodymium magnets for sale have higher energy products and are known as NdFeB strong magnetor powerful NdFeB magnets. As the third generation rare earth magnet, neodymium magnet, also known as NdFeB magnet, is a tetragonal crystal composed of the elements of Nd, Fe, and B. The magnetic energy product BH(max) of rare earth neodymium magnet is higher than that of SmCo magnet, it is the most powerful and strongest rare earth industry magnet in the world. It is also the most commonly used rare earth industry magnet such as the adhesive backed rare earth magnets. Contact us to buy big neodymium magnets!

Big neodymium magnets for sale

Extra Strong Neodymium Magnets

The remanence and energy product of neodymium magnets are higher than that of any other permanent magnets, so they are classified as very strong magnets(also called extra strong magnets).You can find very(extra) strong magnets in various fields of life and industry.

Large Neodymium Magnets

The neodymium magnet with length and diameter over 80mm and the are always called large neodymium magnets. Meank customize and supply nice large rare earth neodymium rare magnets,and we have full size range for large neodymium rare earth magnets for sale...

Neodymium Magnetic Tiles

Arc or segment shape permanent magnets are known as magnetic tiles and tile magnets,which mainly used to make permanent magnet motor.Magnetic tiles of neodymium have perfect performance that required...

Sintered Custom Shaped Powerful NdFeB Magnet

Application

Thanks to the excellent magnetic properties, sintered neodymium(NdFeB) strong permanent magnet materials are widely used in electronics, electrical machinery, motors,medical devices, toys, packaging, hardware machinery, aerospace and other fields. The most common application products of Meank strong neodymium magnets for sale are permanent magnet motors, loudspeakers, magnetic separators, salvage fishing magnet and mounting products.

Rare Earth Neodymium Powerful Magnets Classification

Neodymium(NdFeB) strong magnet can be classified as sintered NdFeB and bonded NdFeB. Bonded NdFeB magnets have magnetism and corrosion resistance in all directions; sintered NdFeB magnet is generally divided into axial magnetized and diametrical magnetized, which is determined according to the required working face.

The sintered neodymium magnet is easy to corrode, and the surface needs to be coated, generally including zinc plating, nickel, environmental protection zinc, environmental protection nickel, nickel-copper-nickel, environmental protection nickel-copper-nickel, and epoxy coating. Meank is a professional manufacturer and supplier of sintered rare earth neodymium strong magnet, which is the strongest magnet and the most powerful magnet for sale in the world. We offer a wide range of large neodymium magnets for sale at a cheap price/cost. Wholesale is available, bulk buying is welcomed. Contact us and buy rare earth magnets now!

Powerful Neodymium Magnets Features & Characteristics

Anisotropy: the magnetic crystals of rare earth neodymium magnets are anisotropic and have high saturation magnetization.

Highest magnetic energy product: among permanent magnetic materials, rare earth neodymium magnets have the highest performance, and the maximum magnetic energy product (BH) of commercial powerful neodymium magnets is max=52MGOe

Poor temperature stability: the powerful neodymium magnet has low Curie temperature and poor temperature stability, which limits its use at higher temperatures.

Poor corrosion resistance: white or other color spots will appear on the surface, which will gradually develop into rust spots. In most cases, protective coatings are required. Generally, rust spots are not easy to appear on the electroplated rare earth neodymium magnet under normal circumstances.

Good mechanical properties: powerful neodymium magnets have good mechanical properties and is easy to cut and drill.

Sintered Rare Earth Strong Industry Magnets Material Magnetic Property & Performance

MagnetType(Grade)

Remanence (Br)

HcB

HcJ

(B-H)max

(KGs)

(mT)

(Koe)

(KA/m)

(Koe)

(KA/m)

(MGOe)

(KJ/m3)

N35

1170-1220

≥10.9

≥868

≥12

≥955

33-36

263-287

80℃

N38

1220-1250

≥11.3

≥899

≥12

≥955

36-39

287-310

80℃

N40

1250-1280

≥11.4

≥907

≥12

≥955

38-41

302-326

80℃

N42

1280-1320

≥11.5

≥915

≥12

≥955

40-43

318-342

80℃

N45

1320-1380

≥11.6

≥923

≥12

≥955

43-46

342-366

80℃

N48

1380-1420

≥10.5

≥836

≥12

≥955

46-49

366-390

80℃

N50

1400-1450

≥10.0

≥796

≥11

≥876

48-51

382-406

80℃

N52

1430-1480

≥10.0

≥796

≥11

≥876

50-53

398-422

60℃

N54

1450-1510

≥10.0

≥796

≥11

≥876

50-53

398-422

60℃

33M

1130-1170

≥10.5

≥836

≥14

≥1114

31-33

247-263

100℃

35M

1170-1220

≥10.9

≥868

≥14

≥1114

33-36

263-287

100℃

38M

1220-1250

≥11.3

≥899

≥14

≥1114

36-39

287-310

100℃

40M

1250-1280

≥11.6

≥923

≥14

≥1114

38-41

302-326

100℃

42M

1280-1320

≥12.0

≥955

≥14

≥1114

40-43

318-342

100℃

45M

1320-1380

≥12.5

≥995

≥14

≥1114

43-46

342-366

100℃

48M

1360-1430

≥12.9

≥1027

≥14

≥1114

46-49

366-390

100℃

50M

1400-1450

≥13.0

≥1033

≥14

≥1114

48-51

382-406

100℃

35H

1170-1220

≥10.9

≥868

≥17

≥1353

33-36

263-287

120℃

38H

1220-1250

≥11.3

≥899

≥17

≥1353

36-39

287-310

120℃

40H

1250-1280

≥11.6

≥923

≥17

≥1353

38-41

302-326

120℃

42H

1280-1320

≥12.0

≥955

≥17

≥1353

40-43

318-342

120℃

45H

1320-1360

≥12.1

≥963

≥17

≥1353

43-46

342-366

120℃

48H

1370-1430

≥12.5

≥995

≥17

≥1353

46-49

366-390

120℃

35SH

1170-1220

≥11.0

≥876

≥20

≥1592

33-36

263-287

150℃

38SH

1220-1250

≥11.4

≥907

≥20

≥1592

36-39

287-310

150℃

40SH

1250-1280

≥11.8

≥939

≥20

≥1592

38-41

302-326

150℃

42SH

1280-1320

≥12.4

≥987

≥20

≥1592

40-43

318-342

150℃

45SH

1320-1380

≥12.6

≥1003

≥20

≥1592

43-46

342-366

150℃

28UH

1020-1080

≥9.6

≥764

≥25

≥1990

26-29

207-231

180℃

30UH

1080-1130

≥10.2

≥812

≥25

≥1990

28-31

223-247

180℃

33UH

1130-1170

≥10.7

≥852

≥25

≥1990

31-34

247-271

180℃

35UH

1180-1220

≥10.8

≥860

≥25

≥1990

33-36

263-287

180℃

38UH

1220-1250

≥11.0

≥876

≥25

≥1990

36-39

287-310

180℃

40UH

1250-1280

≥11.3

≥899

≥25

≥1990

38-41

302-326

180℃

28EH

1040-1090

≥9.8

≥780

≥30

≥2388

26-29

207-231

200℃

30EH

1080-1130

≥10.2

≥812

≥30

≥2388

28-31

223-247

200℃

33EH

1130-1170

≥10.5

≥836

≥30

≥2388

31-34

247-271

200℃

35EH

1170-1220

≥11.0

≥876

≥30

≥2388

33-36

263-287

200℃

38EH

1220-1250

≥11.3

≥899

≥30

≥2388

36-39

287-310

200℃

28AH

1040-1090

≥9.9

≥787

≥33

≥2642

26-29

207-231

230℃

30AH

1080-1130

≥10.3

≥819

≥33

≥2642

28-31

223-247

230℃

33AH

1130-1170

≥10.6

≥843

≥33

≥2642

31-34

247-271

230℃

Note:

●The above-mentioned magnetic performance dates are all given under room temperature.

●The above-mentioned maximum working temperature of neodymium magnets is changeable due to the ratio of length and diameter,surface treatment and environmental factors.

●All above mentioned magnetic property dates are just for reference.

Common Types of Sintered Strong Neodymium Magnets for Sale by Shape

Strong Nd-Fe-B magnet material has good machinability, is suitable for different machining, and can be customized into various shape, the shape of disc, block/rectangle, ring, cylinder, tube, cube, arc/segment, countersunk, bar, sphere, and cone are the most common types for rare earth neodymium (NdFeB)strong magnets.

Common Types of Powerful Rare Earth Ndfeb Magnets by Surface Treatment

Nickel,Zinc and Epoxy coated neodymium(NdFeB) strong magnets are the most widely used types;

Gold,silver,Teflon coated neodymium strong magnets also used for special application.

The rubber coated neodymium pot magnets and plastic coated neodymium (NdFeB)strong magnets are used as waterproof and rust-resistant neodymium magnets.

Common Types of Sintered Strong Neodymium Magnets for Sale by Grade

N35,N38,N40,N42,N45,N48,N50 and N52 are commonly used neodymium strong magnets, N52 neodymium magnet has the highest magnetic energy product.

The rare earth neodymium magnets with grade of H,SH,UH,EH,AH are used for higher working temperature.

Common Surface Treatments of Sintered Custom Rare Earth Neodymium Magnets and Basic Description for Each Kind of Surface Treatment

Surface

Coating

Thickness (Microns)

Color

Resistance

Passivation

1

Silver Grey

Temporary Protection

Nickel

Ni+Ni

10-20

Bright Silver

Excellent Against Humidity

Ni+Cu+Ni

Zinc

Zn

8-20

Bright Blue

Good Against Salt Spray

C-Zn

Shinny Color

Excellent Against Salt Spray

Tin

Ni+Cu+Sn

15-20

Silver

Superior Against Humidity

Silver

Ni+Cu+Ag

10-20

Silver

Superior Against Humidity

Gold

Ni+Cu+Au

10-20

Gold

Superior Against Humidity

Copper

Ni+Cu

10-20

Gold

Temporary Protection

Epoxy

Epoxy

15-25

Black,Red,Grey

Excellent Against Humidity&Salt Spray

Ni+Cu+Epoxy

Zn+Epoxy

Parylene

Parylene

5-20

Grey

Excellent Against Humidity,Salt Spray,Superior Against Solvents,Gases, Fungi and Bacteria,FDA Approved

Chemical

Ni

10-20

Silver Grey

Excellent Against Humidity

Common surface treatment methods of sintered rare earth neodymium(NdFeB) strong magnets are as follows:

Phosphating can be adopted on neodymium strong magnets

Electroplating is the most commonly used surface treatment for strong neodymium magnets.

Electrophoresis is also a surface treatment way for powerful powerful rare earth magnets

Electroless(chemical)plating is used when there are particularly high requirements for corrosion protection.

Organic spraying is adopted when there are different color demands for strong neodymium magnets.

Sintered Neodymium(NdFeB) Strong Magnet Material Physical Properties

Parameter

International Unit

Standard Data

Curie Temperature(Tc)

310-380

Maximum Operating Temperature(Tw)

80-230

Hardness

Hv

620

Electrical Resistivity (ᵨ)

Ω.cm

Density(D)

g/m³

Recoil Permeability(µ rec)

Magnetization Field Strength(Hs)

kA/m

≧2400

kOe

≧30

Bending Strength

Mpa

295-345

%℃

-0.11~-0.12

%℃

-0.5~-0.7

Rare Earth NdFeB Strong Magnets FAQ

How Strong Are Rare Earth Neodymium Magnets?

Rare earth neodymium magnets are very strong. You'll be surprised! An 8*5mm neodymium round disc magnet can produce a force of more than 1700 g (3.75 lb). They are very strong and have replaced other types of magnets in many applications. Rare earth neodymium magnets are more than ten times stronger than ceramic magnets, so ceramic magnets can be replaced with smaller neodymium magnets and produce the same (or more!) strength. Even small neodymium magnets can cause physical damage. The larger neodymium magnet can break your bones. Handle rare earth neodymium magnets with care!

How Are Rare Earth Neodymium Magnets Made Out?

Rare earth neodymium magnets are mainly made of alloys of neodymium, iron and boron. The specific composition will vary according to the required strength and the purpose of the magnet. Sintering and bonding are two main manufacturing methods of neodymium magnets:

By heating the alloy in the furnace and then making the mixture into ingots, the ingots are ground into fine powder and pressed into the mold, and the powder mold is sintered into dense blocks (sintering is the process of compacting the material and forming solid blocks by heating or pressurization without melting it to the liquefaction point.) The material is cut into its final shape, coated or electroplated, and then magnetized. Thus, the finished sintered neodymium magnets are made out

Bonded neodymium magnets combine neodymium alloy powder with polymer adhesive. These components are pressed or extruded to form more complex shapes and magnetized powders than the commonly available shapes and magnetized powders in sintered magnets.

What Is The Strongest Magnet on Earth?

The strongest magnets must be with the highest magnetic energy,rare earth magnet usually has high magnetic energy,and neodymium rare earth magnet is the strongest magnet on earth.

What Are Rare Earth Neodymium Magnets?

Rare earth neodymium magnets are not ordinary refrigerator magnets! They are the strongest permanent magnets. Perhaps you have never heard of rare earth neodymium magnets before, but you have ever used them before. They are sometimes called neodymium iron boron (NdFeB) or neo magnets. Although rare earth neodymium magnets are super strong, they are also very light, so they are widely used. Without this type of neodymium rare earth magnet, many technological progress in the past few decades are impossible!

What Are Rare Earth Neodymium Magnets Used For?

Since its invention in the early 1980s, rare earth neodymium magnets have been used in many industries. If you are reading this article on your mobile or computer, you are using neodymium magnet! The following are some common uses of rare earth neodymium magnets:

Hard disk drive – the hard disk has tracks and sectors containing magnetic units; These units are magnetized when data is written to the driver.

Micros, heads and speakers - current-carrying coils are used with rare earth neodymium magnets to convert electrical energy into mechanical energy, thereby changing the pressure of the surrounding air to produce sound.

Dentures – micro neodymium magnets are used to secure the dentures.

Latch - doors with neodymium magnetic latches are commonly used in commercial and residential buildings.

Magnetic jewelry – magnetic therapy jewelry is usually made of neodymium magnets, which are also used in bracelets and necklace buckles.

Anti lock brake sensors - they are wrapped in a copper coil of the sensor with a neodymium magnet.

In short, rare earth neodymium magnets have countless uses

Where to Buy High-quality and Cheaper Neodymium Magnets?

Do you need high-quality and cheaper neodymium magnets for your projects? We always supply high-quality neodymium magnets for worldwide users. Know more about neodymium magnets here, then contact us and we hope to work for you on neodymium magnets.

Want to know where to buy large neodymium magnetsand industrial mounting magnets, please contact us.



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