Alnico Magnet

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Cast Alnico magnet, which are aluminum nickel-cobalt-iron alloys, are the most established and widely used permanent materials. Because of its excellent stability over a wide temperature range, high flux density at a reasonable cost. Alnico magnet have been accepted in the widest range of application.

Alnico magnet is very suitable for using in Strong Speakers, telephones, mobile, odometer, electricity meter, water meter and sensors.

Physical and reference technical characteristics of Alnico magnet materials: 

Parameter

Value

Curie Temperature

860°C

Operation Temperature

525 - 550°C

Recoil Permeability

1.70 - 4.70rec

Hardness

520 - 630 HV

Density

6.9 - 7.30 g/cm3

Saturation Field Strength

2.7 - 6.3 KOe

Temperature Coefficient of Br

-0.025 ~ -0.02%(°C)

Temperature Coefficient of iHc

0.01 ~ +0.03% (°C)

 

Magnetic characteristics and physical properties of Alnico magnet:

Properties

Residual Flux Density (Br)

Coercive Force (Hc)

Max Energy Product (BH max)

Tc

Tw

MMPA

Equivalent

Code

Gs

mT

Oe

KA/m

MGOe

KJ/m3

°C

°C

AO-9

6900

690

470

37

1.25

10.00

760

500

Alnico1

AO-10

6000

600

500

40

1.20

10.00

760

500

Alnico3

AOG-12

7000

700

500

40

1.50

12.00

810

500

Alnico2

AOG-13

6800

680

600

48

1.50

12.00

810

500

Alnico2

AOGT-18

5800

580

1130

90

2.20

18.00

860

500

(I.Alnico 7)

AOG-16

8000

800

660

53

2.00

16.00

850

500

(Alnico 4)
Features
  • Produce by casting or powder metallurgical techniques.
  • Excellent stability over a wide temperature range.
  • Strong mechanical properties.
  • Precision tolerance and very hard brittle.

Main Products

Sintered ferrite magnet, Neodymium iron boron, Alnico magnet, Samarium cobalt(smco) magnet, Magnetic holder, Flexible rubber magnet.

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Rare Earth Magnets (SmCo)

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