ANISOTROPIC WET TYPE FERRITE MAGNETS
(I) Introduction:
Anisotropic type magnets are sintered permanent magnets composed of strontium ferrite and are pressed in a magnetic field for a preferred direction They have only in this preferred direction good magnetic properties and can be magnetized only in this direction. At the same magnetic volume a higher magnetic flux is obtained than with isotropic magnets. They also exist in two types (dry and wet type.) A dry pressed magnets is formed by molding into the desired shape.A wet press magnet is formed by slowly molding mud-like impalpable into the desired shape.

 

(I) TYPICAL MAGNETIC PROPERTIES ON FERRITE MAGNET:
Material:SR-3 Strontium Ferrite


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Remanence

Coercivity

Maximum
Energy Product

Br

bHc

iHc

(BH)max

G

mT

Oe

kA/m

Oe

kAm

MGOe

kj/m3

Typical

3950

395

3000

240

3100

248

3.7

29.5

Minimum

3850

385

2750

220

2850

228

3.5

27.8

 

Material:SR-4B Strontium Ferrite


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Remanence

Coercivity

Maximum
Energy Product

Br

bHc

iHc

(BH)max

G

mT

Oe

kA/m

Oe

kAm

MGOe

kj/m3

Typical

4100

410

3000

240

3100

248

4.0

31.8

Minimum

4000

400

2750

220

2850

228

3.8

30.2



Material:SR-4BH Strontium Ferrite


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Remanence

Coercivity

Maximum
Energy Product

Br

bHc

iHc

(BH)max

G

mT

Oe

kA/m

Oe

kAm

MGOe

kj/m3

Typical

4100

410

3350

268

3500

280

4.1

32.6

Minimum

4000

400

3150

252

3250

260

3.9

31.0

 

Material:SR-5H Strontium Ferrite


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Remanence

Coercivity

Maximum
Energy Product

Br

bHc

iHc

(BH)max

G

mT

Oe

kA/m

Oe

kAm

MGOe

kj/m3

Typical

4000

400

3600

288

3850

307

3.8

30.2

Minimum

3900

390

3350

268

3600

288

3.6

28.6

 

Material:SR-6H Strontium Ferrite


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Remanence

Coercivity

Maximum
Energy Product

Br

bHc

iHc

(BH)max

G

mT

Oe

kA/m

Oe

kAm

MGOe

kj/m3

Typical

3500

350

3600

288

4700

375

3.2

25.5

Minimum

3400

340

3350

268

4450

355

3.0

23.9

 

Applications of typical items in industry  
Application for Catches, motor, etc, .....


Application for Separator, Cutting purpose


Application for Speaker, Magnetrons, etc....


Application for Cat Motor / Tool Motor




ATLAS MAGTECH LTD.

Unit 18, 23, 7/F Goldfield Industrial Centre, No. 1, Sui Wo Road, Fo Tan, Shatin, N.T.
Hong Kong

Tel: (852) 2662 7028 Fax: (852) 2662 7029

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