Zhejiang Changxing Senda Bamboo & Wood Products Co.,Ltd , https://www.sendaflooring.com
Ceramic (ferrite) magnets are composed of strontium carbonate and iron oxide. Ferrite Magnets are charcoal gray in color and usually appear in the forms of discs, rings, blocks, cylinders, and sometimes arcs for motors.
Least expensive material compared to alnico and rare earth magnets
High intrinsic coercive force
Available in simple shapes only due to manufacturing process
Lower service temperature than alnico, greater than rare earth
Lower energy product than alnico and rare earth magnets
Most common grades of Y25, Y30, Y30H-1, Y30H-2, Y32, Y33 ceramic are 1, 5 and 8 (1-8 possible)
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Magnetic properties of Sintered Ferrite Magnets: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Chinese standard
Material
Br
Hcb
Hcj
(BH)max
mT
KGs
KA/m
KOe
KA/m
KOe
KJ/m 3
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
2.5~3.0
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
360~380
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
2.20~2.64
180~220
2.26~2.77
26.0~30.0
3.3~3.8
Y30BH
380~390
3.8~3.90
223~235
2.80~2.95
231~245
2.90~3.08
27.0~30.0
3.4~3.7
Y30-1
380~400
3.8~4.0
230~275
2.89~3.46
235~290
2.95~3.65
27.0~32.0
3.4~4.0
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
2.77~3.14
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
Material
Br
Hcb
Hcj
(BH)max
mT
KGs
KA/m
KOe
KA/m
KOe
KJ/m 3
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
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
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  × 300=Y30=C5  O× 330=Y30 BH
Grade
Allowed Value (min-typical)
Br
Hcb
BrHcj
(BH)max
mT
KGs
KA/m
KOe
KA/m
KOe
KJ/m 3
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
Y30bh Motor Arc Ferrite Magnets
Model NO.: Sa25
Grade: Customized
Trademark: Uskym
Transport Package: Standard Carton Package
Specification: Customized
Origin: Ningbo, China
HS Code: 8505119000
Y30bh Motor Arc Ferrite Magnets (Sa25)