Magnetic Properties of Ferrite Magnets
In order to distinguish the permanent magnets made of different materials and make it easy for people to know, people usually use fixed letters to represent different magnets. The grades of strong magnetic force are usually divided into N, S, M, H, SH, UH, EH and AH grades. Different grades of magnetic force can meet the needs of different products, so when choosing magnets, it is necessary to choose appropriate magnetic properties according to specific application scenarios and requirements.
National standard
|
Grade
|
Value
|
|||||||
|
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
|
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
|
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
|
Europe standard
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
|
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
|
SrO6Fe2O3
|
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
|
Physical Characteristics
|
Compressive Strength
|
1.4 x 104 kg/cm2
|
|
Required Magnetizing Field
|
12,000 - 15,000 Oe
|
|
Electrical Resistivity
|
> 104 μ-ohm-cm/cm2
|
|
Density
|
4.7-5.0 g/cm3
|
|
Recoil Permeability
|
1.05 μr
|
|
Rev. Temp. Coeff.
|
-0.20 %/°C
|
Magnetic Properties of Sintered Ndfeb Magnets
|
Grade |
Residual Induction |
Coercive Force |
Intrinsic Coercive Force |
Maximum Energy Product |
Maximum Working Temperature |
| Br | Hcb | Hcj | �� BH ��max | ||
| mT | kA/m | kA/m | kJ/m3 | ||
| (kGs) | (kOe) | (kOe) | (MGOe) | Tw | |
|
N35 |
1170-1220 |
≥ 868 |
≥ 955 |
263-287 |
80℃ |
|
N38 |
1220-1250 |
≥ 899 |
≥ 955 |
287-310 |
80℃ |
|
N40 |
1250-1280 |
≥ 907 |
≥ 955 |
302-326 |
80℃ |
|
N42 |
1280-1320 |
≥ 915 |
≥ 955 |
318-342 |
80℃ |
|
N45 |
1320-1380 |
≥ 923 |
≥ 955 |
342-366 |
80℃ |
|
N48 |
1380-1420 |
≥ 923 |
≥ 955 |
366-390 |
80℃ |
|
N50 |
1400-1450 |
≥ 796 |
≥ 876 |
382-406 |
60℃ |
|
N52 |
1430-1480 |
≥ 796 |
≥ 876 |
398-422 |
60℃ |
|
33M |
1130-1170 |
≥ 836 |
≥ 1114 |
247-263 |
100℃ |
|
35M |
1170-1220 |
≥ 868 |
≥ 1114 |
263-287 |
100℃ |
|
38M |
1220-1250 |
≥ 899 |
≥ 1114 |
287-310 |
100℃ |
|
40M |
1250-1280 |
≥ 923 |
≥ 1114 |
302-326 |
100℃ |
|
42M |
1280-1320 |
≥ 955 |
≥ 1114 |
318-342 |
100℃ |
|
45M |
1320-1380 |
≥ 995 |
≥ 1114 |
342-366 |
100℃ |
|
48M |
1370-1430 |
≥ 1027 |
≥ 1114 |
366-390 |
100℃ |
|
50M |
1400-1450 |
≥ 1033 |
≥ 1114 |
382-406 |
100℃ |
|
35H |
1170-1220 |
≥ 868 |
≥ 1353 |
263-287 |
120℃ |
|
38H |
1220-1250 |
≥ 899 |
≥ 1353 |
287-310 |
120℃ |
|
40H |
1250-1280 |
≥ 923 |
≥ 1353 |
302-326 |
120℃ |
|
42H |
1280-1320 |
≥ 955 |
≥ 1353 |
318-342 |
120℃ |
|
45H |
1320-1360 |
≥ 963 |
≥ 1353 |
342-366 |
120℃ |
|
48H |
1370-1430 |
≥ 995 |
≥ 1353 |
366-390 |
120℃ |
|
35SH |
1170-1220 |
≥ 876 |
≥ 1592 |
263-287 |
150℃ |
|
38SH |
1220-1250 |
≥ 907 |
≥ 1592 |
287-310 |
150℃ |
|
40SH |
1250-1280 |
≥ 939 |
≥ 1592 |
302-326 |
150℃ |
|
42SH |
1280-1320 |
≥ 987 |
≥ 1592 |
318-342 |
150℃ |
|
45SH
|
1320-1380 |
≥ 1003 |
≥ 1592 |
342-366 |
150℃ |
|
28UH |
1040-1080 (10.4-10.8) |
≥ 764 |
≥ 1990 |
207-231 |
180℃ |
|
30UH |
1080-1130 (10.8-11.3) |
≥ 812 |
≥ 1990 |
223-247 |
180℃ |
|
33UH |
1130-1170 |
≥ 852 |
≥ 1990 |
247-271 |
180℃ |
|
35UH |
1170-1220 |
≥ 860 |
≥ 1990 |
263-287 |
180℃ |
|
38UH |
1220-1250 |
≥ 876 |
≥ 1990 |
287-310 |
180℃ |
|
40UH |
1250-1280 |
≥ 899 |
≥ 1990 |
302-326 |
180℃ |
|
28EH |
1040-1080 |
≥ 780 |
≥ 2388 |
207-231 |
200℃ |
|
30EH |
1080-1130 (10.8-11.3) |
≥ 812 |
≥ 2388 |
223-247 |
200℃ |
|
33EH |
1130-1170 |
≥ 836 |
≥ 2388 |
247-271 |
200℃ |
|
35EH |
1170-1220 |
≥ 876 |
≥ 2388 |
263-287 |
200℃ |
|
38EH
|
1220-1250 |
≥ 899 |
≥ 2388 |
287-310 |
200℃ |
|
28AH |
1040-1080 (10.4-10.8) |
≥ 787 ( ≥ 9.9) |
≥ 2624 ( ≥ 33) |
207-231 (26-29) |
220℃ |
30AH |
1080-1130 (10.8-11.3) |
≥ 819 ( ≥ 10.3) |
≥ 2624 ( ≥ 33) |
223-247 (28-31) |
220℃ |
33AH |
1130-1170 (11.3-11.7) |
≥ 843 ( ≥ 10.6) |
≥ 2624 ( ≥ 33) |
247-271 (31-34) |
220℃ |
| Modulus of elasticy |
Ultimate tensile strength |
Density |
Electrical Resistivity |
Curie temperature |
Recoil permeability |
Temp.Coeff.of Br |
| 22 x 106 psi |
12 x 103 psi |
7.4 g/cm3 |
160U-ohm-cm/cm2 |
310-340℃ |
1.05 |
From -0.09 to -0.13% /℃ |
Magnetic Properties of Borned Ndfeb Magnets
| P/N |
Br Remanence |
Hcj Intrinsic Coercivity |
Hcb Coercive Force |
(BH)max. Maximum Energy Product |
||||
| MT | kG | kA/m | kOe | kA/m | kOe | KJ/m3 | MGOe | |
| NdFeB-NB6 | 440-560 | 4.40-5.60 | 560-680 | 7.0-8.5 | 240-320 | 3.0-4.0 | 32-48 | 4.0-6.0 |
| NdFeB-NB8 | 540-640 | 5.40-6.40 | 640-720 | 8.0-9.0 | 320-400 | 4.0-5.0 | 48-64 | 6.0-8.0 |
| NdFeB-NB8M | 540-620 | 5.40-6.20 | 1040-1360 | 13.0-17.0 | 384-464 | 4.8-5.8 | 56-72 | 7.0-9.0 |
| NdFeB-NB10 | 620-700 | 6.20-7.00 | 608-800 | 7.6-10.0 | 360-456 | 4.5-5.7 | 64-80 | 8.0-10.0 |
| NdFeB-NB12 | 690-760 | 6.90-7.60 | 640-840 | 8.0-10.5 | 400-480 | 5.0-6.0 | 80-96 | 10.0-12.0 |
Physical Chracteristics of bonded NdFeB Magnets
| P/N |
µrec Recoil Permeability |
Hs Magnetizing Field |
Density | Temperature Coefficient |
Tc Curie Temperature |
K[2] Ring Crushing Strength |
Coefficient of Thermal Expansion (25-200°C) |
||
| µrec | kA/m | g/cm3 | kOe |
α (Br) %/°C |
β (Hcj) %/°C |
°C | kg/mm2 | 10-6/°C | |
| NdFeB-NB6 | 1.22 | 1600 | 5.1-5.6 | 20 | -0.14 | -0.40 | 360 | 5.5 | 4.8 |
| NdFeB-NB8 | 1.22 | 1600 | 5.4-5.8 | 20 | -0.13 | -0.40 | 360 | 5.5 | 4.8 |
| NdFeB-NB8M | 1.18 | 2000 | 5.8-6.0 | 25 | -0.12 | -0.38 | 305 | 5.5 | 4.8 |
| NdFeB-NB10 | 1.22 | 1600 | 5.8-6.0 | 20 | -0.11 | -0.40 | 360 | 5.5 | 4.8 |
| NdFeB-NB12 | 1.17 | 1600 | 5.9-6.1 | 20 | -0.11 | -0.41 | 360 | 5.5 | 4.8 |
Note:
[1] The properties given above are typical at room temperature(23°C) for uncoated samples.
[2] Ring Crushing Strength K is defined as follows, with the force applying along a diameter of magnet ring and P is the value at which the first crack appears. K=P(D-T)/LT2
K—Ring Crushing Strength(kg/mm2), P—Load on magnet ring(kg), D—Outer diameter(mm),
T—Ring thickness(mm), L—Height of the ring(mm)
Magnetic Properties of Sintered SmCo Magnets
|
Material
|
Code
|
Remanence Br
|
Coercivity Force
|
Intrinsic Coercivity Force
|
Max. Energy Product Bhm
|
Curie Temperature
|
Max. Operating Temperature
|
||||
|
|
|
T
|
KGs
|
KA/m
|
KOe
|
KA/m
|
KOe
|
KJ/m3
|
MGOe
|
oC
|
oC
|
|
Sintered
|
|||||||||||
|
SmCo(1:5)
|
UNI-18
|
0.75-0.9
|
8.5-9.0
|
620-648
|
7.8-8.2
|
1194-1513
|
15-19
|
127-143
|
16-18
|
750
|
250
|
|
|
UNI-20
|
0.92-0.96
|
9.2-9.6
|
653-717
|
8.2-9.0
|
1194-1513
|
15-19
|
150-167
|
19-21
|
750
|
250
|
|
|
UNI-24
|
0.96-1.0
|
9.6-1.0
|
730-770
|
9.2-9.7
|
1194-1513
|
15-19
|
175-190
|
22-24
|
750
|
250
|
|
SmCo(2:17)
|
UNI-24
|
0.95-1.02
|
9.5-10.2
|
637-732
|
8.0-9.2
|
1433-1990
|
18-25
|
175-190
|
22-24
|
800
|
300
|
|
|
UNI-26
|
1.02-1.05
|
10.2-10.5
|
748-796
|
9.4-10.0
|
1433-1990
|
18-25
|
195-215
|
24-26
|
800
|
300
|
|
|
UNI-28
|
1.05-1.08
|
10.5-10.8
|
756-796
|
9.5-10.0
|
1433-1831
|
18-25
|
205-220
|
26-28
|
800
|
300
|
|
|
UNI-28B
|
1.02-1.10
|
10.2-11.0
|
420
|
5.2-5.6
|
440-520
|
5.5-6.5
|
205-220
|
26-28
|
800
|
300
|
|
|
UNI-30
|
1.08-1.10
|
10.8-11.0
|
780
|
9.8-10.5
|
1433-1831
|
18-25
|
220-240
|
28-30
|
800
|
300
|
|
|
UNI-30B
|
1.08-1.15
|
10.8-11.5
|
420
|
5.2-5.6
|
440-520
|
5.5-6.5
|
220-240
|
28-30
|
800
|
300
|
|
Bonded
|
|||||||||||
|
SmCo(1:5)
|
UNI-6
|
0.4
|
4.0
|
280
|
3.5
|
800
|
10
|
30-50
|
4-6
|
-
|
120
|
|
|
UNI-10
|
0.5
|
5.0
|
320
|
4.0
|
800
|
10
|
50-65
|
6-8
|
-
|
120
|
|
SmCo(2:17)
|
UNI-10
|
0.6
|
6.0
|
360
|
4.5
|
800
|
10
|
65-80
|
8-10
|
-
|
120
|
|
|
UNI-12
|
0.7
|
7.0
|
400
|
5.0
|
800
|
10
|
80-95
|
10-12
|
-
|
120
|
|
|
SmCo5
|
Sm2Co17
|
| Temp. Coeff. Of Br:1%/oC |
-0.05
|
-0.03
|
| Temp.Coeff. Of iHc: %/oC |
-0.3
|
-0.2
|
| Curie Temperature: oC |
700-750
|
800-850
|
| Density: g/cm3 |
8.2-8.4
|
8.3-8.5
|
| Vickers Hardness: Hv |
450-500
|
500-600
|
| Working Temperature : oC |
250
|
300
|
Magnetic Properties of Sintered Alnico Magnets
|
Grade
|
(BH)max
KJ/m3 |
Br
mT |
Hcb
kA/m |
Hcj
kA/m |
d
g/cm3 |
α(Br)
%/K |
Tc
℃ |
Remarks
|
|
ALNiCo4/1
|
3.2-4.8
|
870-890
|
9-11
|
10-12
|
6.8
|
-0.02
|
750
|
isotropy
|
|
ALNiCo8/5
|
8.5-9.5
|
530-620
|
45-50
|
47-52
|
6.8
|
-0.02
|
750
|
|
|
ALNiCo10/5
|
9.5-11
|
630-700
|
48-56
|
50-58
|
6.8
|
-0.02
|
780
|
|
|
ALNiCo12/5
|
11-13
|
700-750
|
50-56
|
53-58
|
7.0
|
-0.02
|
800
|
|
|
ALNiCo14/5
|
13-15
|
730-800
|
47-50
|
50-53
|
7.1
|
-0.02
|
790
|
|
|
ALNiCo14/6
|
14-16
|
620-810
|
56-64
|
58-66
|
7.1
|
-0.02
|
790
|
|
|
ALNiCo14/8
|
14-16
|
550-610
|
75-88
|
80-92
|
7.1
|
-0.01
|
850
|
|
|
ALNiCo18/10
|
16-19
|
570-620
|
92-100
|
99-107
|
7.2
|
-0.01
|
860
|
|
|
ALNiCo35/5
|
35-39
|
1100-1200
|
48-52
|
50-54
|
7.20
|
-0.02
|
850
|
Anisotropy
|
|
ALNiCo29/6
|
29-33
|
970-1090
|
58-64
|
60-66
|
7.20
|
-0.02
|
860
|
|
|
ALNiCo32/10
|
33-38
|
770-870
|
90-104
|
94-109
|
7.20
|
-0.01
|
860
|
|
|
ALNiCo33/11
|
33-38
|
700-800
|
107-115
|
111-119
|
7.20
|
-0.01
|
860
|
|
|
ALNiCo39/12
|
39-43
|
830-900
|
115-123
|
119-127
|
7.25
|
-0.01
|
860
|
|
|
ALNiCo44/12
|
44-48
|
900-950
|
119-127
|
124-132
|
7.25
|
-0.01
|
860
|
|
|
ALNiCo37/15
|
37-41
|
700-800
|
143-151
|
150-158
|
7.10
|
-0.1
|
870
|
Magnetic Properties of Cast Alnico Magnets
|
Equivalent
MMPA Class |
Grade
|
Remanence | Coercive Force |
Max.
energy product |
Density | Rev. Temp. Coef. | Curie Temp. |
Max. operating Temp. |
||||
|
Br
|
Hc
|
(BH)max
|
D
|
Br
|
Hc |
Tc
|
Tw | |||||
|
mT
|
KGs
|
KA/M
|
Oe
|
KJ/m3
|
MGOe
|
g/cm3
|
%/��C
|
%/��C
|
��C
|
��C
|
||
|
ALNICO 3
|
LN9 |
680
|
6.8
|
30
|
380
|
9.0
|
1.13
|
6.9
|
-0.03
|
-0.02
|
810
|
450
|
|
ALNICO 2
|
LNG12
|
720
|
7.2
|
45
|
500
|
12.4
|
1.55
|
7.0
|
-0.03
|
-0.02
|
810
|
450
|
|
LNG13
|
700
|
7.0
|
48
|
600
|
12.8
|
1.60
|
7.0
|
-0.03
|
-0.02
|
810
|
450
|
|
|
ALNICO 5
|
LNG37
|
1200
|
12.0
|
48
|
600
|
37.0
|
4.65
|
7.3
|
-0.03
|
-0.02
|
810
|
525
|
|
LNG40
|
1250
|
12.5
|
48
|
600
|
40.0
|
5.00
|
7.3
|
-0.02
|
+0.02
|
860
|
525
|
|
|
LNG44
|
1250
|
12.5
|
52
|
650
|
44.0
|
5.50
|
7.3
|
-0.02
|
+0.02
|
860
|
525
|
|
|
ALNICO 5DG
|
LNG52
|
1300
|
13.0
|
56
|
700
|
52.0
|
6.50
|
7.3
|
-0.02
|
+0.02
|
860
|
525
|
|
ALNICO
5-7 |
LNG60
|
1350
|
13.5
|
59
|
740
|
60.0
|
7.50
|
7.3
|
-0.02
|
+0.02
|
860
|
525
|
|
ALNICO 6
|
LNGT28
|
1000
|
10.0
|
58
|
720
|
28.0
|
3.50
|
7.3
|
-0.02
|
+0.03
|
860
|
525
|
|
ALNICO 8HC
|
LNGT36J
|
700
|
7.0
|
140
|
1750
|
36.0
|
4.50
|
7.3
|
-0.025
|
+0.02
|
860
|
550
|
|
ALNICO 8
|
LNGT18
|
580
|
5.8
|
100
|
1250
|
18.0
|
2.20
|
7.3
|
-0.025
|
+0.02
|
860
|
550
|
|
ALNICO 8
|
LNGT32
|
800
|
8.0
|
100
|
1250
|
32.0
|
4.00
|
7.3
|
-0.025
|
+0.02
|
860
|
550
|
|
LNGT40
|
800
|
8.0
|
110
|
1380
|
40.0
|
5.00
|
7.3
|
-0.025
|
+0.02
|
860
|
550
|
|
|
ALNICO 9
|
LNGT60
|
900
|
9.0
|
110
|
1380
|
60.0
|
7.50
|
7.3
|
-0.025
|
+0.02
|
860
|
550
|
|
LNGT72
|
1050
|
10.5
|
112
|
1400
|
72.0
|
9.00
|
7.3
|
-0.025
|
+0.02
|
860
|
550
|
|