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Neodymium Magnets (NdFeB) Introduction

Neodymium Magnets, NdFeB Magnets
Introduce:
Neodymium Magnets, also known as NdFeB magnets, are the most widely-used type of rare earth magnets. It is the strongest type of permanent magnet made from an alloy of Neodymium, Iron, and Boron with the Nd2Fe14B tetragonal crystalline structure. It has replaced other types of magnets in many applications in modern products that require strong permanent magnets, such as motors in cordless tools, hard disk drives, and magnetic fasteners.
Neodymium Magnets Grade

  NdFeB Magnet Grade

Type

Grade

Residual Induction /BR(Gauss)

Coercive Force/Hc (Oe)

Intrinsic Coercive Force/Hci (Koe)

Max.Energy Product/Bhmax (MGOe)

Maximum Operating Temp (°C/°F)

Curie Temp (°C/°F)

               

N

N35

11700

10900

12

35

80/176

310/590

N

N38

12200

11300

12

38

80/176

310/590

N

N40

12500

11400

12

40

80/176

310/590

N

N42

12800

11500

12

42

80/176

310/590

N

N45

13200

11600

12

45

80/176

310/590

N

N48

13800

11600

12

48

80/176

310/590

N

N50

14000

10000

11

50

60/140

310/590

N

N52

14300

10000

11

52

60/140

310/590

               

M

N33M

11300

10500

14

33

100/212

340/644

M

N35M

11700

10900

14

35

100/212

340/644

M

N38M

12200

11300

14

38

100/212

340/644

M

N40M

12500

11600

14

40

100/212

340/644

M

N42M

12800

12000

14

42

100/212

340/644

M

N45M

13200

12500

14

45

100/212

340/644

M

N48M

13600

12900

14

48

100/212

340/644

M

N50M

14000

13000

14

50

100/212

340/644

               

H

N35H

11700

10900

17

35

120/248

340/644

H

N38H

12200

11300

17

38

120/248

340/644

H

N40H

12500

11600

17

40

120/248

340/644

H

N42H

12800

12000

17

42

120/248

340/644

H

N45H

13200

12100

17

45

120/248

340/644

H

N48H

13700

12500

17

48

120/248

340/644

               

SH

N35SH

11700

11000

20

35

150/302

340/644

SH

N38SH

12200

11400

20

38

150/302

340/644

SH

N40SH

12500

11800

20

40

150/302

340/644

SH

N42SH

12800

12400

20

42

150/302

340/644

SH

N45SH

13200

12600

20

45

150/302

340/644

               

UH

N28UH

10200

9600

25

28

180/356

350/662

UH

N30UH

10800

10200

25

30

180/356

350/662

UH

N33UH

11300

10700

25

33

180/356

350/662

UH

N35UH

11800

10800

25

35

180/356

350/662

UH

N38UH

12200

11000

25

38

180/356

350/662

UH

N40UH

12500

11300

25

40

180/356

350/662

UH

N42UH

12800

11300

25

42

180/356

350/662

               

EH

N28EH

10400

9800

30

28

200/392

350/662

EH

N30EH

10800

10200

30

30

200/392

350/662

EH

N33EH

11300

10500

30

33

200/392

350/662

EH

N35EH

11700

11000

30

35

200/392

350/662

EH

N38EH

12200

11300

30

38

200/392

350/662

EH

N40EH

12500

11300

30

40

200/392

350/662

               

AH

N28AH

10400

9900

33

28

230/446

350/662

AH

N30AH

10800

10300

33

30

230/446

350/662

AH

N33AH

11300

10600

33

33

230/446

350/662

AH

N35AH

11700

11000

33

35

230/446

350/662

AH

N38AH

12200

11300

33

38

230/446

350/662

  
Neodymium Magnets Shape:

Discs

Blocks

Rings

Cylinders

Other Shape

 

Neodymium Magnets Coating:

Name

Coating Thickness(μm)

Color

PCT

Humidity Test

Salt Spray Test

Collision Test

White Zinc

8-15

Blue and white

3

3

3

2

Color Zinc

10-15

Multicolor

3

3

2

2

Nickel

20-30

Silver

1

1

3

1

Electroless Nickel

20-30

Silver

1

1

1

1

NiCuNi

15-30

Silver

2

1

2

1

NiSn

20-30

Silver

2

1

2

1

Epoxy

10-30

Black

2

1

1

1

Phosphating

1-3

Black

3

2

3

3

NiAu

10-20

Gold

2

2

2

1


Neodymium Magnets Application:
NdFeB magnets are widely used technology in aerospace, aviation, electronics, and other instruments.

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