AlNiCo Magnets

① Characteristics

 

              AlNiCo describes a family of material, which is derived from a common base composition comprising of aluminum, nickel, cobalt and iron with varying additions of other elements. By varying the composition it is possible to tailor the magnetic properties to meet the needs of a wide variety of end use applications. There are two different manufacturing processes for AlNiCo: Cast AlNiCo can be made into many size and shapes, whereas Sintered AlNiCo is usually restricted to smaller sizes. However, both processes lead themselves to complex geometries and configurations. Standard Sintered AlNiCo has tighter dimensional tolerances due to its processing. It also has slightly lower magnetic properties, but better mechanical strength than Cast AlNiCo products which possess the lowest reversible temperature coefficient magnetism in permanent magnet materials have excellent working temperature up to 600°C. AlNiCo products are widely used in all kinds of meters and other application.

Magnetic Properties of Cast Alnico

GRADE

Br

Hcj

(BH)max

Density

U.S.
Standard

% Change Per C

Tc

Tw

mT

Gs

KA/m

Oe

KJ/m3

MGOe

g/cm3

Near Br

Near Hcj

°C

°C

LN9

680

6800

30

380

9.0

1.13

6.9

AlNiCo 3

-0.03

-0.02

810

450

LN10

600

6000

40

500

10.0

1.2

6.9

-0.03

-0.02

810

450

LN12

720

7200

45

500

12.4

1.55

7.0

 AlNiCo 2

-0.03

-0.02

810

450

LN13

700

7000

48

600

12.8

1.60

7.0

-0.03

-0.02

810

450

LN37

1200

12000

48

600

37.0

4.65

7.3

 AlNiCo 5

-0.02

+0.02

860

525

LNG40

1250

12500

48

600

40.0

5.00

7.3

-0.02

+0.02

860

525

LNG44

1250

12500

52

650

44.0

5.50

7.3

-0.02

+0.02

860

525

LNG52

1300

13000

56

700

52.0

6.50

7.3

AlNiCo 5DG

-0.02

+0.02

86

525

LNG60

1350

13500

59

740

60.0

7.50

7.3

AlNiCo 5-7

-0.02

+0.02

860

525

LNGT28

1000

10000

58

720

28.0

3.50

7.3

AlNiCo 6

-0.025

+0.03

860

525

LNGT36J

700

7000

140

1750

36.0

4.50

7.3

AlNiCo 8HC

-0.025

+0.02

860

550

LNGT18

580

5800

100

1250

18.0

2.20

7.3

AlNiCo 8

-0.025

+0.02

86

550

LNGT32

800

8000

100

1250

32.0

4.00

7.3

AlNiCo 8

-0.025

+0.02

860

550

LNGT40

800

8000

110

1380

40.0

5.00

7.3

-0.025

+0.02

860

550

LNG60

900

9000

110

1380

60.0

7.50

7.3

AlNiCo 9

-0.025

+0.02

860

550

LNGT72

1050

10500

112

1400

72.0

9.00

7.3

-0.025

+0.02

860

550

 

 

Magnetic Properties of Sintered Alnico

GRADE

Br

Hcj

Hcb

(BH)max

Density

% Change Per C

Tc

REMARKS

mT

Gs

KA/m

Oe

KA/m

Oe

KJ/m3

MGOe

g/cm3

%/K

°C

FLN8

520

5200

43

540

40

500

8-10

1.0-1.25

6.8

-0.022

760

ISOTROPIC

FLNG12

700

7000

43

540

40

500

12-14

1.5-1.75

7.0

-0.014

810

FLNGT14

570

5700

78

980

76

950

14-16

1.75-2.0

7.1

-0.020

850

FLNGT18

560

5600

90

1130

88

1100

18-22

2.25-2.75

7.2

-0.020

850

FLNG28

1050

10500

47

590

46

580

28-33

3.5-4.15

7.2

-0.016

850

ANISOTROPIC

FLNG34

1100

11000

51

640

50

630

34-38

4.3-4.8

7.2

-0.016

890

FLNGT28

1000

10000

57

710

56

700

28-30

3.5-3.8

7.2

-0.020

850

FLNGT31

780

7800

106

1130

104

1300

33-36

3.9-4.5

7.2

-0.020

850

FLNG33J

650

6500

150

1880

136

1700

31-36

4.15-4.5

7.2

-0.020

850

FLNGT38

800

8000

126

1580

123

1550

38-42

4.75-5.3

7.2

-0.020

850

FLNGT42

880

8800

122

1530

120

1500

42-48

5.3-6.0

7.25

-0.020

850

② Description