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Products: Permanent Magnets >> Hard Ferrite Magnet (Ceramic magnet)
General Introduction

Hard ferrite (ceramic magnet) magnets were developed in the 1960's as a low cost alternative to metallic magnets. Even though they exhibit low energy (compared with other permanent magnet materials) and are relatively brittle and hard, ferrite magnets have won wide acceptance due to their good resistance to demagnetization, excellent corrosion resistance and low price per pound. In fact, measured by weight, ferrite represents more than 75 percent of the world magnet consumption. It is the first choice for most types of DC motors, magnetic separators, magnetic resonance imaging and automotive sensors.

 

Besides industrial application, Hard Ferrite magnets are widely use in Educational area.

What shapes can it be formed?   ceramic magnet, sintered ferrite magnet
ferrite magnet ferrite magnet
hard ferrite magnet ferrite magnet
ferrite magnet ferrite magnet
ferrite magnet,educational magnet ferrite magnet,educational magnet
Magnetic properties of Sintered Hard Ferrite
Chinese standard
Grade
Br
Hcb
Hcj
(BH)max
mT
KGs
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
2.5-3.2
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
Y30
370-400
3.7-4.0
175-210
2.2-2.64
180-220
2.64-2.77
26.0-30.0
3.3-3.8
Y30BH
380-390
3.8-3.9
223-235
2.80-2.95
231-245
2.90-3.08
27.0-30.0
3.4-3.7
Y30-1
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
Y10T
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
Y20-2
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
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
 
USA standard of Sintered Hard Ferrite Magnet
Material
Br
Hcb
Hcj
(BH)max
mT
KGs
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 of Sintered Hard Ferrite Magnet
The standard from International Electronics Committee (IEC404-8-1)
O100=Y10T=C1   300=Y30=C5   O330=Y30 BH

Grade
Allowed Value (min/typical)
Br
Hcb
BrHcj
(BH)max
mT
KGs
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
 
 
 
 

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