Ferrite Magnet
 

HARD FERRITE PERMANENT MAGNETS

Magnetic materials are fundamental functional materials of electronic industry. As important parts of magnetic materials, hard ferrite materials play a heavyrole in electronic industry, electronic information industry, car industry, motorcycle industry etc. meanwhile, they are also widely used in medical treatment, mining and metallurgy, industrial automation, oil energy industry and civil industry.

Our main products includes :hard ferrite arc or segment, ring magnets, rectangular magnets, ferrite power etc. Which have the following advantages: high coercive force, high electric resistance, long-time stability, and economical price. Meanwhile, we can manufacture new tools according to the customers` demand.

Mostly Used national standard - SJ285-77 permanent ferrite magnet standard

Grade

Value(min/typical in our factory)

Br

Hcb(BHC)

Hcj(IHC)

(BH)max

MT

KG

KA/m

Koe

KA/m

KOe

Kj/m3

MGOe

Y10T(=C1)

200/218

2.00/2.18

125/145

1.57/1.82

210/250

2.64/3.14

6.5/8.0

0.8/1.0

Y25

360/370

3.60/3.70

135/150

1.70/1.88

140/170

1.76/2.14

22.5/25.3

2.8/3.2

Y30(=C5)

380/385

3.80/3.85

191/210

2.40/2.64

199/220

2.50/2.51

26.0/28

3.4/3.7

Y30BH

380/390

3.80/3.90

223/235

2.80/2.95

231/245

2.90/3.08

27.0/30.0

3.4/3.7

Y33

410/420

4.10/4.20

220/235

2.77/2.95

225/240

2.83/3.01

31.5/33.0

4.0/4.2

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

C8(=C8A)

385/390

3.85/3.90

235/255

2.95/3.20

242/265

3.05/3.33

27.8/30.0

3.5/3.7

C10

400/410

4.00/4.10

288/300

3.62/3.77

280/287

3.51/3.60

30.4/31.9

3.8/4.0

Chinese standard -sj/T10410 2000 permanent ferrite magnet standard

Material

Br

HcB

HcJ

(BH)max

mT

KG

KA/m

Oe

KA/m

Oe

Kj/m³

MGOe

Y8T

200~235

2000

125~160

1570

210~280

2610

6.5~9.5

0.8

Y22H

310~360

3100

220~250

2770

280~320

3520

20.0~24.0

2.5

Y25

360~400

3600

135~170

1700

140~200

1760

22.5~28.0

2.8

Y26H-1

360~390

3600

220~250

2512

225~255

2830

23.0~28.0

2.9

Y26H-2

360-380

3600

263-288

3300

318-350

4000

24.0-28.0

3.0

Y27H

370~400

3500

225-240

2830

235-260

2950

25.0~29.0

3.1

Y28

370-400

3700

175-210

2200

180-220

2260

26.0-30.0

3.3

Y28H-1

380-400

3800

240-260

3020

250-280

3140

27.0-30.0

3.1

Y28H-2

360-380

3600

271-295

3400

382-405

1800

26.0-30.0

3.3

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

Y30H-1

380~400

3800

230-275

2890

235-290

2950

27.0~32.5

3.4

Y30H-2

395-415

3950

275-300

3460

310-335

3900

27.0~32.0

3.4

Y32

400~420

4000

160~190

2010

165~195

2070

30.0~33.5

3.8

Y32H-1

400-420

4000

190-230

2390

230-250

2890

34.5-35.0

4.0

Y32H-2

400-440

4000

224-240

2810

230-250

2890

31.0-34.0

3.9

Y33

410~430

4100

220~250

2760

225~255

2830

31.5~35.0

4.0

Y33H

410-430

4100

250-270

3140

250-275

3140

31.5-35.0

4.0

Y34

420-440

4200

200-230

2510

205-235

2580

32.5-36.0

4.1

Y35

430-450

4300

215-239

2700

217-242

2730

33.1-33.2

4.2

Y36

440-450

4400

247-271

3100

250-374

4400

35.1-38.3

4.4

Y38

440-460

4400

285-305

3580

294-310

3690

36.6-40.6

4.6

Y40

450-460

4500

330-354

4150

340-360

4270

37.6-41.8

4.7


Demagetization Curves of Permanent Ferrite Magnet

USA standard - permanent ferrite magnet industry standard of USA

Material

Br

HcB

HcJ

(BH)max

mT

KG

KA/m

KOe

KA/e

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

420

4.2

232

2.913

236

2.96

32.8

4.12

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

Japan TDK standard

Grade

Composition 

Br

Hcb

Hcj

BH max

       

mT

kG

kA/m

kOe

kA/m

kOe

KJ/m3

MGOe

FB40

SrO6Fe2O3

410+/-10

4.1+/-10

234.8+/-11.9

2.95+/-0.15

238.7+/-15.9

3.0+/-0.2

31.4+/-1.6

3.95+/-0.2

FB3N

SrO6Fe2O3

395+/-15

3.95+/-15

234.8+/-11.9

2.95+/-0.15

238.7+/-15.9

3.0+/-0.2

28.7+/-2.4

3.6+/-0.3

FB3G

SrO6Fe2O3

375+/-15

3.75+/-15

254.6+/-15.9

3.2+/-0.2

270.6+/-19.9

3.4+/-0.25

25.9+/-2.4

3.25+/-0.3

FB3X

SrO6Fe2O3

375+/-15

3.75+/-15

234.8+/-11.9

2.95+/-0.15

238.7+/-15.9

3.0+/-0.2

25.9+/-2.4

3.25+/-0.3

FB1A

SrO6Fe2O3

220+/-15

2.20+/-15

159.2+/-15.9

2.0+/-0.2

258.6+/-19.9

3.25+/-0.25

8.9+/-1.6

1.1+/-0.2

FB5H

SrO6Fe2O3

405+/-15

4.05+/-15

298.4+/-11.9

3.75+/-0.15

322.3+/-11.9

4.05+/-0.15

31.1+/-1.6

3.9+/-0.2

FB4X

SrO6Fe2O3

420+/-10

4.20+/-10

234.8+/-11.9

2.95+/-0.15

238.7+/-15.9

3.0+/-0.2

33.4+/-1.6

4.2+/-0.2

FB4B

SrO6Fe2O3

400+/-10

4.00+/-10

254.6+/-11.9

3.2+/-0.2

262.6+/-19.9

3.3+/-0.25

30.3+/-1.6

3.8+/-0.2

FB4A

SrO/BaO6Fe2O3

410+/-10

4.10+/-10

175.1+/-15.9

2.2+/-0.2

176.7+/-15.9

2.22+/-0.2

31.8+/-1.6

4.0+/-0.2

FBGN

SrO6Fe2O3

440+/-10

4.40+/-10

258.6+/-11.9

3.25+/-0.15

262.6+/-11.9

3.3+/-0.15

36.7+/-1.6

4.6+/-0.2

FB6B

SrO6Fe2O3

420+/-10

4.20+/-10

302.4+/-11.9

3.8+/-0.15

318.3+/-11.9

4.0+/-0.15

33.4+/-1.6

4.2+/-0.2

FB6H

SrO6Fe2O3

400+/-10

4.00+/-10

302.4+/-11.9

3.8+/-0.15

358.1+/-11.9

4.5+/-0.15

30.3+/-1.6

3.8+/-0.2

FB6E

SrO6Fe2O3

380+/-10

3.80+/-10

290.5+/-11.9

3.65+/-0.15

393.9+/-11.9

4.95+/-0.15

27.5+/-1.6

3.45+/-0.2

FB5N

SrO6Fe2O3

440+/-10

4.40+/-10

256.8+/-11.9

2.85+/-0.15

2259.2+/-11.9

2.88+/-0.15

36.7+/-1.6

4.6+/-0.2

FB5B

SrO6Fe2O3

420+/-10

4.20+/-10

262.6+/-11.9

3.3+/-0.15

266.6+/-11.9

3.35+/-0.15

33.4+/-1.6

4.2+/-0.2

The standard from International Electronics Committee(IEC404-8-1)

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

Physical property of hard ferrite mangets

Parameters

Mark

Unit

Value

Recoil Permeability

Urce

-

1.05-1.3

Curie temperture

Tc

0C

460

The temperature of Br

0C-1

-0.2%

The temperature of Hcj

0C-1

0.2-0.5%

Density

D

g/cm3

4.5-5.1

Resistivity

P

104

The coefficient of linear expansion

0C-1

7-15x10-6

Hardness

HV

-

480-580

 

l Inspection standard for permanent magnet

l Purchasing Guide

l Permanent magnet supply direction

l Surface protection and surface coating for the permanent magnet

l Quality warranty

l Safety principle for manual operation of permanent magnet

 

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