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Alnico magnets

Description
Aluminum Nickel Cobalt (Alnico) magnets are mainly made from aluminum, nickel, cobalt, copper, iron and sometimes titanium. The low coercive force limits their application in many cases. Alnico magnets have two different manufacturing processes: casting and sintering.
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Model No. NS20151453453391518
  • Flowchart
  • Characteristics
  • Properties

Grade

MMPA Equivalent

Br

Hcb

Hcj

(BH)max

Remark

mT

Gs

kA/m

Oe

kA/m

Oe

kJ/m3

MGOe

LN10

Alnico3

600

6000

40

500

43

540

10

1.20

Isotropic

LNG13

Alnico2

680

6800

48

600

51

640

13

1.60

LNGT18

Alnico8

580

5800

90

1130

92

1160

18

2.20

LNG37

Alnico5

1200

12000

48

600

49

610

37

4.65

Anisotropic

LNG40

1250

12500

48

600

49

610

40

5.00

LNG44

1250

12500

52

650

53

660

44

5.50

LNG52

Alnico5DG

1300

13000

56

700

57

710

52

6.50

LNG60

Alnico5-7

1350

13500

59

740

60

750

60

7.50

LNGT28

Alnico6

1000

10000

58

720

59

740

28

3.50

LNGT36J

Alnico8HC

700

7000

140

1750

148

1850

36

4.50

LNGT38

Alnico8

800

8000

110

1380

112

1400

38

4.75

LNGT44

880

8800

120

1500

122

1530

44

5.50

LNGT60

Alnico9

900

9000

110

1380

112

1400

60

7.50

LNGT72

1050

10500

112

1400

114

1430

72

9.00

 


Curie Temperature (°C)860
Maximum Operating Temperature (°C)525-550
Resistivity (μ ohm.cm)47-54
Hardness (Hv)520-630
Density (g/cm3)6.90-7.30
Relative Recoil Permeability (μrec)1.70-4.70
Saturation Field Strength, kOe (kA/m)2.7-6.3 (215-500)
Temperature Coefficient of Br (%/°C)-0.025 ~ -0.02
Temperature Coefficient of iHc (%/°C)+0.01 ~ +0.03
 


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