ALNICO MAGNETS

This list informs about the physical values of the mostly used Alnico and Ticonal type materials, product of PRAMIZ Ltd., made by the powder metallurgy technology.

Alnico and Ticonal magnets are metallic permanent magnets based of Fe, Al, Ni, Co, Cu and Ti alloy They have fairly high remanence Br and high energy product (B.H)max, low temperature coefficient of remanence - 0.02%/°C, high Curie-temperature 850°C and maximum temperature of use - 450°C. These magnetic properties make Alnico and Ticonal magnets irreplaceable to use in electrical measuring devices (moving coil measuring instruments, magnetic brake for electromechanical watt-hour meters), precise electroacoustic transducers (loudspeakers, microphones), switch sensors and other applications which require temperature stable and time stable magnets.

The magnetic properties of Alnico and Ticonal type materials, product of PRAMIZ Ltd. are presented in the table:

Materia

*

Minimum values

(B.H)max

Br

BHc

kJ/m3

MG. Oe

T

G

kA/m

Oe

Alnico 12/6

i

12

1.50

0.60

6000

54

680

Alnico 14/6

a

14

1.80

0.71

7100

54

680

Alnico 20/5

a

20

2.50

0.90

9000

54

680

Alnico 35/5

a

35

4.40

1.16

11600

56

700

Ticonal 18/9

i

18

2.20

0.60

6000

84

1050

Ticonal 26/10

a

26

3.30

0.75

7500

96

1200

* i = isotropic; a = anisotropic

The figure shows typical demagnetization curves of the magnets presented in the table.

Alnico Magnets

To answer the client's requirements we need the following information:
- A drawing with a shape and dimensions of the magnet, a condition of the surfaces. The cross-section of the magnets can be from
20 to 1000 mm2 and the length from 2 to 40 mm. We recommend the length to be up to 3 times the diameter;
- A type material, according the table and other requirements;
- A direction of magnetization or a configuration of poles;
- Conditions of work of the magnets: a configuration with other magnets or cores, air gaps, demagnetization fields and etc.;
- A condition of magnets: magnetized or demagnetized;
- A quantity.

Receiving this information we can answer about a price, a term of delivery and etc.