|
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
|
