Home

Hard Ferrite

NdFeB Magnet Neodymium

Ferrite Cores

Flexible Rubber Magnet

Magnetic Assembly

Contact Us

Bonded Plastic Injection

Sm-Co Magnet

AlNiCo Magnet

Magnetic Powder

Magnetic Toy


Specialized casting techniques are used to achieve the unique crystalline grain orientation found in the Alnico 5 and 8 grades. These anisotropic grades are designed to produce high magnetic output in a specified direction. Orientation is achieved during heat treatment, by cooling the casting from 2000?F at a controlled rate within a magnetic field which conforms to the preferred direction of magnetization. Alnico 5 and Alnico 8 are anisotropic and exhibit a preferred direction of orientation.

Magnetic orientation should be specified on your drawing when you send an order to us. Cast Alnico 5 is the most commonly used of all the cast Alnicos. It combines high inductions with a high energy product of 5 MGOe or more and is used extensively in rotating machinery, communications, meters and instruments, sensing devices and holding applications. The higher resistance to demagnetization (coercive force) of Alnico 8, cobalt content to 35%, allows this material to function well for short lengths or for length to diameter ratios of less than 2 to 1.

Sintered Alnico materials offer slightly lower magnetic properties but better mechanical characteristics than the cast Alnico materials. Sintered Alnico magnets are most suitable in small sizes (less than 1 oz.). In this process, the desired mix of metal powders is pressed to shape and size in a die, then sintered at 2300?F in a hydrogen atmosphere. The sintering process is well suited to large volume production, and results in parts which are structurally stronger than cast magnets. Relatively close tolerances can be achieved without grinding.
 
Product Flow Chat For Alnico  

Cast Alnico   
  

Sinter Alnico
  

Typical Magnetic Performance Range for Cast Alnico Magnet
Grade
Br
Hcj
(BH)max
Density
Equivalent
MMPA
Class
%ChangePer C
Tc
Tw
mT
KGs
KA/M
Oe
KJ/m3
MGOe
G/cm3
Near Br
Near Hcj
(0C)
(0C)
*LN9
680
6.8
30
380
9.0
1.13
6.9
Alnico3
-0.03
-0.02
810
450
*LN10
600
6.0
40
500
10.0
1.20
6.9
*LNG12
720
7.2
45
500
12.4
1.55
7.0
Alnico 5
-0.03
-0.02
810
450
*LNG13
700
7.0
48
600
12.8
1.60
7.0
LNG37
1200
12.0
48
600
37.0
4.65
7.3
-0.02
+0.02
860
525
LNG40
1250
12.5
48
600
40.0
5.00
7.3
LNG44
1250
12.5
52
650
44.0
5.50
7.3
LNG 52
1300
13.0
56
700
52.0
6.50
7.3
Alnico 5DG
LNG60
1350
13.5
59
740
60.0
7.5
7.3
Alnico 5-7
LNGT28
1000
10.0
58
720
28.0
3.50
7.3
Alnico 6
-0.02
+0.03
860
525
LNGT36J
700
7.0
140
1750
36.0
4.50
7.3
Alnico 8HC
-0.025
+0.02
860
550
*LNGT18
580
5.8
100
1250
18.0
2.2
7.3
Alnico 8
-0.025
+0.02
860
550
LNGT32
800
8.0
100
1250
32.0
4.0
7.3
-0.025
+0.02
860
550
LNGT40
800
8.0
110
1380
40.0
5.0
7.3
-0.025
+0.02
860
550
LNGT60
900
9.0
110
1380
60.0
7.50
7.3
Alnico 9
-0.025
+0.02
860
550
LNGT72
1050
10.5
112
1400
72.0
9.00
7.3
-0.025
+0.02
860
550

Typical Magnetic Performance Range for Sintered Alnico
Grade
Br
HcJ
HcB
(BH)max
Density
%Change Per C
Tc
Remark
mT
KGs
KA/m
Oe
KA/m
Oe
KJ/m3
MGOe
G/cm3
%K
OC
กก
FLN8
520
5.2
43
540
40
500
8-10
1.0-1.25
6.8
-0.022
760
Isotropic
FLNG12
700
7.0
43
540
40
500
12-14
1.5-1.75
7.0
-0.014
810
FLNG14
570
5.7
78
980
76
950
14-16
1.75-2.0
7.1
-0.020
850
FLNG18
560
5.6
90
1130
88
1100
18-22
2.25-2.75
7.2
-0.020
850
FLNG28
1050
10.5
47
590
46
580
28-33
3.5-4.15
7.2
-0.016
850
Anisotropic
FLNG34
1100
11.0
51
640
50
630
34-38
4.3-4.8
7.2
-0.016
890
FLNGT28
1000
10.0
57
710
56
700
28-30
3.5-3.8
7.2
-0.020
850
FLNGT31
780
7.8
106
1130
104
1300
33-36
3.9-4.5
7.2
-0.020
850
FLNG33J
650
6.5
150
1880
136
1700
31-36
4.15-4.5
7.2
-0.020
850
FLNGT38
800
8.0
126
1580
123
1550
38-42
4.75-5.3
7.2
-0.020
850
FLNGT42
880
8.8
122
1530
120
1500
42-48
5.3-6.0
7.25
-0.020
850

Typical Applications for Alnico magnet:
Widely used applications such as instruments and meters which require very stable temperature properties.
Electronic ignition systems,watt bour meters,volt-amp meters.medical instruments,industrial motors,magnetic reed switches,generators,hand tools,vending machines.

*Small changes in magnetic properties to temperature effects
*Maximum working temperature can be as high as 450oC~550oC.
*Low coercive force.
*Strong corrosion resistance capability,no coating needed for surface protection.

Home |   Contact Us |  Hard Ferrite  |  Ferrite Cores  |  Bonded Plastic Injection  |  Flexible Rubber Magnet Sitemap
NdFeB Magnet Neodymium  |  Sm-Co Magnet  |  AINiCo Magnet  |  Magnetic Powder  | Magnetic Assembly
@Copy Right - AMC GROUP., All Right Reserved.
Address: 2nd floor C1 Building, Huayi KeXueYuan, No.71 TianDa Road, Gao Xin Qu, Hefei, Anhui, China
Zip:230088 Tel:+ 86 (0)551 65390113/114 /115
Fax: + 86 (0)551 65334878
Email: sales@amcgroupco.com