Most Used national standard - SJ285-77 permanent ferrite magnet standard
Grade
Br
Hcb
Hcj
BHmax
kGs
mT
kOe
kA/m
kOe
kA/m
KJ/m3
MGOe
Y10T(=C1)
2.00/2.18
200/218
1.57/1.82
125/145
2.64/3.14
210/250
6.5/8.0
0.8/1.0
Y25
3.60/3.70
360/370
1.70/1.88
135/150
1.76/2.14
140/170
22.5/25.3
2.8/3.2
Y30(=C5)
3.80/3.85
380/385
2.40/2.64
191/210
2.50/2.51
199/220
26.0/28
3.4/3.7
Y30BH
3.80/3.90
380/390
2.80/2.95
223/235
2.90/3.08
231/245
27.0/30.0
3.4/3.7
Y33
4.10/4.20
410/420
2.77/2.95
220/235
2.83/3.01
225/240
31.5/33.0
4.0/4.2
Y35
4.00/4.10
400/410
2.20/2.45
175/195
2.26/2.51
180/200
30.0/32.0
3.8/4.0
C8(=C8A)
3.85/3.90
385/390
2.95/3.20
235/255
3.05/3.33
242/265
27.8/30.0
3.5/3.7
C10
4.00/4.10
400/410
3.62/3.77
288/300
3.51/3.60
280/287
30.4/31.9
3.8/4.0
USA standard - permanent ferrite magnet industry standard of USA
Grade
Br
Hcb
Hcj
BHmax
Density
Tw Max
Remark
kGs
mT
kOe
kA/m
kOe
kA/m
KJ/m3
MGOe
g/cm3
C1
2.3
230
1.86
150
3.5
258
8.36
1.05
4.8
250
Isotropic
C5
3.8
380
2.4
190
2.5
200
27.1
3.4
4.9
250
C7
3.4
340
3.23
258
4.0
318
21.9
2.75
4.9
250
C8(C8A)
3.85
385
2.95
235
3.0
240
27.8
3.5
4.9
250
Anisotropic
C8B
4.2
420
2.9
232
2.96
236
32.8
4.1
4.9
250
C9
3.8
380
3.5
280
4.0
320
26.4
3.3
4.9
250
C10
4.0
400
3.6
288
3.5
280
30.4
3.8
4.9
250
C11
4.3
430
2.5
200
2.55
204
34.4
4.3
4.9
250
China standard -SJ/T10410 2000 permanent ferrite magnet standard
Grade
Br
Hcb
Hcj
BHmax
kGs
mT
kOe
kA/m
kOe
kA/m
KJ/m3
MGOe
Y8T
2.0
200~235
1.57
125~160
2.61
210~280
6.5~9.5
0.8
Y22H
3.1
310~360
2.77
220~250
3.52
280~320
20.0~24.0
2.5
Y25
3.6
360~400
1.7
135~170
1.76
140~200
22.5~28.0
2.8
Y26H-1
3.6
360~390
2.51
220~250
2.83
225~255
23.0~28.0
2.9
Y26H-2
3.6
360-380
3.3
263-288
4.0
318-350
24.0-28.0
3.0
Y27H
3.5
370~400
2.83
225-240
2.95
235-260
25.0~29.0
3.1
Y28
3.7
370-400
2.2
175-210
2.26
180-220
26.0-30.0
3.3
Y28H-1
3.8
380-400
30.2
240-260
3.14
250-280
27.0-30.0
3.1
Y28H-2
3.6
360-380
3.4
271-295
382-405
26.0-30.0
3.3
Y30
3.7~4.0
370~400
2.20~2.64
175~210
2.26~2.77
180~220
26.0~30.0
3.3~3.8
Y30H-1
3.8
380~400
2.89
230-275
2.95
235-290
27.0~32.5
3.4
Y30H-2
3.95
395-415
3.46
275-300
3.9
310-335
27.0~32.0
3.4
Y32
4.0
400~420
2.01
160~190
2.07
165~195
30.0~33.5
3.8
Y32H-1
4.0
400-420
2.39
190-230
2.89
230-250
34.5-35.0
4.0
Y32H-2
4.0
400-440
2.81
224-240
2.89
230-250
31.0-34.0
3.9
Y33
4.1
410~430
2.76
220~250
2.83
225~255
31.5~35.0
4.0
Y33H
4.1
410-430
3.14
250-270
3.14
250-275
31.5-35.0
4.0
Y34
4.2
420-440
2.51
200-230
2.58
205-235
32.5-36.0
4.1
Y35
4.3
430-450
2.7
215-239
2.73
217-242
33.1-33.2
4.2
Japan TDK standard
Grade
Composition
Br
Hcb
Hcj
BHmax
kGs
mT
kOe
kA/m
kOe
kA/m
KJ/m3
MGOe
FB40
SrO6Fe2O3
<SPAN lang=EN-US style="FONT-SIZE: 8pt; FONT-FAMILY: Arial">4.1+/-10
410+/-10
2.95+/-0.15
234.8+/-11.9
3.0+/-0.2
238.7+/-15.9
31.4+/-1.6
3.95+/-0.2
FB3N
SrO6Fe2O3
3.95+/-15
395+/-15
2.95+/-0.15
234.8+/-11.9
3.0+/-0.2
238.7+/-15.9
28.7+/-2.4
3.6+/-0.3
FB3G
SrO6Fe2O3
3.75+/-15
375+/-15
3.2+/-0.2
254.6+/-15.9
3.4+/-0.25
270.6+/-19.9
25.9+/-2.4
3.25+/-0.3
FB3X
SrO6Fe2O3
3.75+/-15
375+/-15
2.95+/-0.15
234.8+/-11.9
3.0+/-0.2
238.7+/-15.9
25.9+/-2.4
3.25+/-0.3
FB1A
SrO6Fe2O3
2.20+/-15
220+/-15
2.0+/-0.2
159.2+/-15.9
3.25+/-0.25
258.6+/-19.9
8.9+/-1.6
1.1+/-0.2
FB5H
SrO6Fe2O3
4.05+/-15
405+/-15
3.75+/-0.15
298.4+/-11.9
4.05+/-0.15
322.3+/-11.9
31.1+/-1.6
3.9+/-0.2
FB4X
SrO6Fe2O3
4.20+/-10
420+/-10
2.95+/-0.15
234.8+/-11.9
3.0+/-0.2
238.7+/-15.9
33.4+/-1.6
4.2+/-0.2
FB4B
SrO6Fe2O3
4.00+/-10
400+/-10
3.2+/-0.2
254.6+/-11.9
3.3+/-0.25
262.6+/-19.9
30.3+/-1.6
3.8+/-0.2
FB4A
SrO/BaO6Fe2O3
4.10+/-10
410+/-10
2.2+/-0.2
175.1+/-15.9
2.22+/-0.2
176.7+/-15.9
31.8+/-1.6
4.0+/-0.2
FBGN
SrO6Fe2O3
4.40+/-10
440+/-10
3.25+/-0.15
258.6+/-11.9
3.3+/-0.15
262.6+/-11.9
36.7+/-1.6
4.6+/-0.2
FB6B
SrO6Fe2O3
4.20+/-10
420+/-10
3.8+/-0.15
302.4+/-11.9
4.0+/-0.15
318.3+/-11.9
33.4+/-1.6
4.2+/-0.2
FB6H
SrO6Fe2O3
4.00+/-10
400+/-10
3.8+/-0.15
302.4+/-11.9
4.5+/-0.15
358.1+/-11.9
30.3+/-1.6
3.8+/-0.2
FB6E
SrO6Fe2O3
3.80+/-10
380+/-10
3.65+/-0.15
290.5+/-11.9
4.95+/-0.15
393.9+/-11.9
27.5+/-1.6
3.45+/-0.2
FB5N
SrO6Fe2O3
4.40+/-10
440+/-10
2.85+/-0.15
256.8+/-11.9
2.88+/-0.15
2259.2+/-11.9
36.7+/-1.6
4.6+/-0.2
FB5B
SrO6Fe2O3
4.20+/-10
420+/-10
3.3+/-0.15
262.6+/-11.9
3.35+/-0.15
266.6+/-11.9
33.4+/-1.6
4.2+/-0.2
 
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