Sintered NdFeB Magnet

  • Application: Electronic Products, Speaker Magnet, Industrial Magnet, Motor Magnet
  • Coating: Nicuni, Zinc, Epoxy, Au, AG, Phosphating
  • Material: NdFeB
  • Origin: Ningbo
  • Shape: Disc, Block, Ring, Cylinder, Tile, Rod, Sphere
  • Grade: N35, N38, N42, N45, N50, N52, N35h, N35sh
  • Transport Package: Suitable for Sea and Air Delivery
  • HS Code: 8505111000
Sintered NdFeB magnet
Sintered NdFeB magnet, (also written as 'sintered neodymium magnet'), is manufactured by sintering. Depending on  grades, sintered NdFeB magnet can work properly under temperature 80 ºC - 200ºC. With high magnetic remanence, high coercive force and high magnetic energy product, sintered NdFeB magnet is used widely in modern industries, including motors, speakers, generators, CD\DVD-ROM, nuclear magnetic resonance, magnetic sensors, magnetic separators, magnetic filters, and other magnetic force control tools.
To get a finished sintered NdFeB magnet, it has to go through a series of complicated production processes, with the help of couples of equipments, including Vacuum Inducting Melting Furnace, Crusher, Jet Milling Machine, Magnetic field oriented press, Isostatic Pressing Machine, Sintering Furnace and kinds of testing equipments. And in order to get requested shape and size, and meet the final dimension tolerance, sintered NdFeB magnet is usually accomplished with various kinds of machines, such as drilling machine, cutting machine, grinding machine, etc.
Sintered NdFeB magnet is available in several normal shapes, disc, rod, rectangular, cube, ring, sphere, arc, and tile. Some irregular shapes can be also machined according to the drawings.
Sintered NdFeB magnet is very easy to be rusted. To prevent it from corroding, surface treatment is needed.
Common surface treatments for it include nickel plating, galvanization, electrophoresis and epoxy resin. Also, phosphorization can be used to delay oxide and rust. In application, we should consider completely the sintered NdFeB magnet's actual application environment and period, then choose the fittest treatment method for it.
Since sintered NdFeB magnet is rigid, fragile and easy to break, meanwhile, it is easy to be corroded, so when dealing with it, especially the one which is already magnetized, we must be careful about it, avoiding any damages or breaches.
 

Sintered NdFeB magnet property list:
 

Grade

Remanence
(Br)

Coercive Force
(Hc)

Intrinsic Coercive Force
(Hci)

Maximum Energy Product
(BHmax)

Maximum Operating
Temperature

(Gs)

(mT)

(Oe) min

(kA/m) min

(kOe) min

(kA/m) min

(MGOe)

(KJ/m3)

(°C)

(°F)

N30

10800

1080

9800

780

12

955

30

239

80

176

N33

11400

1140

10300

820

12

955

33

263

80

176

N35

11700

1170

10800

860

12

955

35

279

80

176

N38

12200

1220

10800

860

12

955

38

303

80

176

N40

12600

1260

10500

836

12

955

40

318

80

176

N42

12600

1260

10500

836

12

955

42

342

80

176

N45

13300

1330

10500

923

12

836

45

358

80

176

N48

13700

1370

10500

923

12

836

48

382

80

176

N50

14000

1400

10500

836

12

955

51

406

80

176

N52

14200

1420

10500

836

11

876

53

422

80

176

N30M

10800

1080

10200

816

14

1114

30

239

100

212

N33M

11400

1140

10700

852

14

1114

33

263

100

212

N35M

11700

1170

11000

876

14

1114

35

279

100

212

N38M

12200

1220

11500

916

14

1114

38

303

100

212

N40M

12600

1260

11800

939

14

1114

40

318

100

212

N42M

12900

1290

12000

955

14

1114

42

334

100

212

N45M

13200

1320

12400

987

14

1114

46

366

100

212

N48M

13700

1370

12800

1018

14

1114

49

390

100

212

N50M

13900

1390

13200

1050

14

1114

51

406

100

212

N30H<

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