|
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
|
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
|
