Speaker Magnet Application Rare Earth Ferrite Magnet

    Features:
   1) Low cost
   2) High corrosion resistance
   3) High working temperature
   4) Best choice for industrial application

     1. Ferrite or Ceramic Magnets are still the most widely used magnets with a maximum energy product of 1 to ± 4.3 MGOe. 
     2. Due to the environmental requirements which are becoming more stringent barium ferrite has been replaced bystrontium ferrite during the last years. 
     3.Ferrite is the cheapest magnetic material and has a high corrosion resistance making coating unnecessary.
    4.This magnetic material is hard and fragile and must be processed with diamond, preferably when it is not in a magnetic state.
    5.Because it might shrink during the sinter process a tolerance of ± 2 % should be taken into account when determining the dimensions. If grinded ± 0.1 mm.
    6.Tighter tolerance is available on request. 
    7.Ferrite magnets can be supplied both isotropically and anisotropically, they are used in the most divergent products such as loudspeakers, magnetrons, measuring devices, toys, engines, reed contacts etc. 
    8.The maximum temperature of use is 225°C depending on the specification, dimensions and system design. 
    9.The minimum dimension for block magnets is 2 x 2 x 2 mm, whereas the maximum dimension for this type is 270 x 90 x 25.4 mm.
   10.The minimum dimension for disc magnets is D 2 x 1 mm, whereas the maximum dimension for this type is D 156 x 25.
   11.The minimum dimension for ring magnets is D8 x 2.5 x 3 mm, whereas the maximum dimension for this type is D 256 x D* x 25 mm (* inside diameter in consultation).
   12.Applications of Ferrite Magnets:
Used to design tools for holding, separating, retrieving, and lifting;
Micro motors,DC permanent magnet motors(used in car),DC brushless motors;
Separators( separate ferrous materail from non-ferrous);
Loudspeakers, laser beam printer, copying machine, magnetic playset, printed matter, etc.
 
We are good at manufacturing segment permanent ferrite magnets, with mould pressing and cutting small squares, with good magnetic property and quality which equal to international advanced counterparts.
 
Welcome customized orders!
Cell phone: 86 18267013317      

Chinese standard
Material	Br		HcB		HcJ		(BH)max
	mT	KG	KA/m	KOe	KA/m	KOe	Kj/m³	MGOe
Y10T	200~235	2.0~2.35	125~160	1.57~2.01	210~280	2.64~3.52	6.5~9.5	0.8~1.2
Y20	320~380	3.2~3.8	135~190	1.70~2.38	140~195	1.76~2.45	18.0~22.0	2.3~2.8
Y22H	310~360	3.1~3.6	220~250	2.77~3.14	280~320	3.52~4.02	20.0~24.0	2.5~3.0
Y23	320~370	3.2~3.7	170~190	2.14~2.38	190~230	2.39~2.89	20.0~25.5	2.5~3.2
Y25	360~400	3.6~4.0	135~170	1.70~2.14	140~200	1.76~2.51	22.5~28.0	2.8~3.5
Y26H	360~390	3.6~3.9	220~250	2.77~3.14	225~255	2.83~3.21	23.0~28.0	2.9~3.5
Y27H	370~400	3.7~4.0	205~250	2.58~3.14	210~255	2.64~3.21	25.0~29.0	3.1~3.7
Y30	370~400	3.7~4.0	175~210	2.20~2.64	180~220	2.26~2.77	26.0~30.0	3.3~3.8
Y30BH	380~390	3.8~3.90	223~235	2.80~2.95	231~245	2.90~3.08	27.0~30.0	3.4~3.7
Y30H-1	380~400	3.8~4.0	230~275	2.89~3.46	235~290	2.95~3.65	27.0~32.0	3.4~4.0
Y30H-2	395~415	3.95~4.15	275~300	3.46~3.77	310~335	3.90~4.21	28.5~32.5	3.5~4.0
Y32	400~420	4.0~4.2	160~190	2.01~2.38	165~195	2.07~2.45	30.0~33.5	3.8~4.2
Y33	410~430	4.1~4.3	220~250	2.77~3.14	225~255	2.83~3.21	31.5~35.0	4.0~4.4
Y35	400~410	4.00~4.10	175~195	2.20~2.45	180~200	2.26~2.51	30.0~32.0	3.8~4.0

 

European standard

Grade

Allowed Value (min/typical)

Br

Hcb(BHC)

Hcj(IHC)

(BH)max

MT

KG

KA/m

KOe

KA/m

KOe

Kj/m³

MGOe

HF8/22

200/220

2.00/2.20

125/140

1.57/1.76

220/230

2.76/2.89

6.5/6.8

0.8/1.1

HF20/19

320/333

3.20/3.33

170/190

2.14/2.39

190/200

2.39/2.51

20.0/21.0

2.5/2.7

HF20/28

310/325

3.10/3.25

220/230

2.76/2.89

280/290

3.52/3.64

20.0/21.0

2.5/2.7

HF22/30

350/365

3.50/3.65

255/265

3.20/3.33

290/300

3.64/3.77

22.0/23.5

2.8/3.0

HF24/16

350/365

3.50/3.65

155/175

1.95/2.20

160/180

2.01/2.26

24.0/25.5

3.0/3.2

HF24/23

350/365

3.50/3.65

220/230

2.76/2.89

230/240

2.89/3.01

24.0/25.5

3.0/3.2

HF24/35

360/370

3.60/3.70

260/270

3.27/3.39

350/360

4.40/4.52

24.0/25.5

3.0/3.2

HF26/16

370/380

3.70/3.80

155/175

1.95/2.20

160/180

2.01/2.26

26.0/27.0

3.2/3.4

HF26/18

370/380

3.70/3.80

175/190

2.20/2.39

180/190

2.26/2.39

26.0/27.0

3.3/3.4

HF26/24

370/380

3.70/3.80

230/240

2.89/3.01

240/250

3.01/3.14

26.0/27.0

3.3/3.4

HF26/26

370/380

3.70/3.80

230/240

2.89/3.01

260/270

3.27/3.39

26.0/27.0

3.3/3.4

HF26/30

385/395

3.85/3.95

260/270

3.27/3.39

300/310

3.77/3.89

26.0/27.0

3.3/3.4

HF28/26

385/395

3.85/3.95

250/265

3.14/3.33

260/275

3.27/3.45

28.0/30.0

3.5/3.8

HF28/28

385/395

3.85/3.95

260/270

3.27/3.39

280/290

3.50/3.60

28.0/30.0

3.5/3.8

HF30/26

395/405

3.95/4.05

250/260

3.14/3.33

260/270

3.27/3.39

30.0/31.5

3.8/3.9

HF32/17

410/420

4.10/4.20

160/180

2.01/2.26

165/175

2.07/2.20

32.0/33.0

4.0/4.1

HF32/22

410/420

4.10/4.20

215/225

2.70/2.83

220/230

2.76/2.89

32.0/33.0

4.0/4.1

HF32/25

410/420

4.10/4.20

240/250

3.01/3.14

250/260

3.14/3.27

32.0/33.0

4.0/4.1

USA standard

Material

Br

HcB

HcJ

(BH)max

mT

KG

KA/m

KOe

KA/m

KOe

Kj/m³

MGOe

C1

230

2.3

148

1.86

258

3.5

8.36

1.05

C5

380

3.8

191

2.4

199

2.5

27

3.4

C7

340

3.4

258

3.23

318

4.00

21.9

2.75

C8(C8A)

385

3.85

235

2.95

242

3.05

27.8

3.5

C8B

410

4.1

231

2.9

235

2.95

28.7

3.6

C8C

430

199

2.5

203

2.55

34.2

4.3

C9

380

3.8

280

3.516

320

4.01

26.4

3.32

C10

400

4.0

288

3.617

280

3.51

30.4

3.82

C11

430

4.3

200

2.512

204

2.56

34.4

4.32

C12

400

4.0

290

3.64

318

3.99

32

4.02