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Hard Ferrite Magnets Bonded Magnets Magnetic assembly
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   Magnetic Properties


Hard ferrite magnets (sintered)

1. Chinese Standards (1)






Type
Br
Hcb
(BN)M
mT
Gs
KA/m
Oe
KJ/m3
MGOe
Y10T
200
2000
128-160
1600-2000
6.4-9.6
0.8-1.2
Y25
350-390
3500-3900
152-208
1900-2600
22.3-25.5
2.8-3.2
Y30
380-420
3800-4200
160-216
2000-2700
26.3-29.5
3.3-3.7
Y30BH
380-400
3800-4000
224-240
2800-3000
27.1-30.3
3.4-3.8
Y35
400-440
4000-4400
176-224
2200-2800
30.30-33.4
3.8-4.2

2. Chinese Standards (2)
Type
Br
(mT)
Hcb
(KA/m)
Hcj
(KA/m)
(BH)
max(KJ/m3)
Y8T
200-235
125-160
210-280
6.5-9.5
Y25
360-400
135-170
140-200
22.5-28.0
Y26H
360-390
220-250
225-255
23.0-28.0
Y27H
370-400
205-250
210-255
25.0-29.5
Y28
370-400
175-210
180-220
26.0-30.0
Y30H-1
380-400
230-275
235-290
27.0-32.0
Y30H-2
395-415
275-300
310-335
28.5-32.5
Y32
400-420
160-190
165-195
30.0-33.5
Y33
410-430
220-250
225-255
31.5-35.0

3. American Standards
MMPA
Brief
Designation
Original
MMPA
Class
IEC Code
Reference
Magnetic Properties (nominal)
Max.
Energy
Product
(BH)
Max
(MGO)
Residual
induction
Br
(gauss)
Coercive
Force Hc

(oersteds)
Intrinsic
Coercive
Force Hci
(oersteds)
1.0/33.3
3.4/2.5
2.7/4.0
3.5/3.1
3.4/3.9
4.0/2.9
3.2/4.8
3.8/4.0

Ceramic 1
Ceramic 5
Ceramic 7
Ceramic 8
-
-
-
-

S1-0-1
S1-1-6
S1-1-2
S1-1-5
-
-
-
-
1.05
3.40
2.75
3.50
3.40
4.00
3.20
3.80

2300
3800
3400
3850
3800
4100
2700
4000

1860
2400
3250
2950
3400
2800
3500
3650
3250
2500
4000
3050
3900
2900
4800
4000
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