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永磁铁氧体物理性能    
Physical Property of Ferrite Magnet    

参数Parameter

符号Mark

单位Unit

数值Value

回复磁导率
Recoil permeability

μrec

Gs/Oe

1.05-1.3

居里温度
Curie temperature

Tc

450

剩磁温度系数
The coefficient of demagnetization to temperature

α(Br)

-1

-0.2%(0-100)

磁化强度矫顽力的温度系数 
The coefficient of magnetization coercive force to temperature

α(Hc)

-1

0.2%-0.5%(0-100)

密度
Density

d

g/cm3

4.7-5.0

电阻率
Resistivity

ρ

Ω,cm

≥ 106

线膨胀系数
The coefficient of linear expansion

α 

-1

7-15×10-6

硬度
Hardness

HV

-

480-580

永磁铁氧体磁性能    
Magnetic Characteristic of Ferrite Magnet    

Chinese standard

Grade

Br

Hcb

Hcj

(BH)max

mT

KG

KA/m

KOe

KA/m

KOe

KJ/m3

MGOe

Y8T

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

2.5-3.2

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

Y28H
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

3.8-4.0

230-275

2.89-3.46

235-290

2.95-3.65

27.0-32.0

3.4-4.1

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

2.77-314

225-255

2.83-3.21

31.5-35.0

4.0-4.4

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

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

Europe standard

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

O×100=Y10T=C1   O×300=Y30=C5   O×330=Y30BH

Grade    

     

Allowed Value (min/typical)

Br

Hcb

Hcj

(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

3.5/3.65

255/265

3.20/3.33

290/300

3.64/3.77

22.0/23.5

2.8/3.0

HF24/16

350/365

3.5/3.65

155/175

1.95/2.20

160/180

2.01/2.26

24.0/25.5

3.0/3.2

HF24/23

360/370

3.5/3.65

220/230

2.76/2.89

230/240

2.89/3.01

24.0/25.5

3.0/3.2

HF24/35

370/380

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