Cast  Alnico

Sintered  Alnico
 

 

Cast   Alnico

The oldest permanent magnets ever produced are still now irreplaceable in measure or high temperature applications.

They are mainly obtained from Aluminium, Nickel, Cobalt and Iron fusion, followed by proper orientation heat-treatments.

They almost always need mechanical end-processing.

It's usually advisable to use "on site" magnetization because of their magnetic characteristic.

 

 

 MATERIALS STANDARD CHARACTERISTICS

TYPE

 GRADE

Residual 

Flux Density 

Br

Coercitive  Force

Max  Energy Product 

 Material
HC ( B H ) max
MMPA
KG T KOe KA/m MGOe KJm3

Isotropic

LN9

6.80 0.680 0.380 30 1.13 9 ALNICO3

LN10

6.00 0.600 0.500 40 1.20 10 ALNICO3
LNG12 7.20 0.720 0.510 45 1.55 12.4 ALNICO2
LNG13 7.00 0.700 0.600 48 1.60 12.8 ALNICO2
LNGT18 5.80 0.580 1.250 100 2.20 18 ALNICO8
Anisotropic LNG37 12.00 1.200 0.600 48 4.65 37 ALNICO5
LNG40 12.50 1.250 0.600 48 5.00 40 ALNICO5
LNG44 12.50 1.250 0.650 52 5.50 44 ALNICO5
LNG52 13.00 1.300 0.700 56 6.50 52 ALNICO5DG
LNG60 13.50 1.350 0.740 59 7.50 60 ALNICO5-7
LNGT28 10.00 1.000 0.720 58 3.50 28 ALNICO6
LNGT36J 7.00 0.700 1.750 140 4.28 36 ALNICO8HC
LNGT32 8.00 0.800 1.250 100 4.00 32 ALNICO8
LNGT40 8.00 0.800 1.380 110 5.00 40 ALNICO8
LNGT60 9.00 0.900 1.380 110 7.50 60 ALNICO9
LNGT72 10.50 1.050 1.400 112 9.00 72 ALNICO9

 

Other typical magnetics properties (DIN 17410)

Curie

Temperature

°C Max

Operating

Temperature

°C Max

Temperature

Coefficent

of Br

% x °C

Temperature

Coefficent

of jHC

Relative Recoil

Permeability

µ rec

Minimum

saturation

field

KO/KAm

 

 
860 550 0.018-0.025 - 1.3-5.2 6.7/530    

Other typical physical properties (DIN 17410)

Density

g/cm3

Vickers

Hardness

Hv

Flexural

strength

N/mm2

Tensil

strength

N/mm2

Compression

strength

N/mm2

Elastic

module

N/mm2

Thermal

expansion

coefficent

10-6/k

Specific electric

resistivity

10-8/OHM/m

7.3

650

-

190

300ca

-

11

45

For further technical information about mechanical tolerances, magnetization, temperature behaviour, hardness, glues, etc, etc...

CONSULT OUR TECHNICAL DEPARTMENT

 

 

 

Sintered  Alnico

These magnets are also obtained from Aluminium, Nickel, Cobalt and Iron, "powder" reduced with tested granulometry.

In this case, thanks to the compression in specific shape moulds, it's possible to produce the required magnet directly, working it on the orientation size only.

This productive process is particularly competitive for small magnets.

 

 MATERIALS STANDARD CHARACTERISTICS

TYPE

 GRADE

Residual 

Flux Density 

Br

Coercitive  Force HC

Max  Energy Product 

  
bHC jHC ( B H ) max
 
KG T KOe KA/m KOe KA/m MGOe KJm3

Isotropic

FLN8

5.200 0.520 0.500 40 0.540 43 1.0-1.25 8-10

FLNG12

7.000 0.700 0.500 40 0.500 43 1.50-1.75 12-14
FLNGT14 5.700 0.570 0.950 76 0.980 78 1.75-2.0 16-16
FLNGT18 5.600 0.560 1.100 88 1.130 90 2.25-2.75 18-22
FLNG28 10.500 1.050 0.580 46 0.590 47 3.50-4.15 28-33
Anisotropic FLNG34 11.000 1.100 0.630 50 0.640 51 4.30-4.80 34-38
FLNGT28 10.000 1.000 0.700 56 0.710 57 3.50-3.80 28-30
FLNGT31 7.800 0.780 1.300 104 1.310 106 3.90-4.50 31-36
FLNG33J 6.500 0.650 1.700 136 1.880 150 4.15-4.50 33-36
FLNGT38 8.000 0.800 1.550 123 1.580 126 4.75-5.30 38-42
FLNGT42 8.800 0.880 1.500 120 1.530 122 5.30-6.0 42-48

 

Other typical magnetics properties (DIN 17410)

Curie

Temperature

°C Max

Operating

Temperature

°C Max

Temperature

Coefficent

of Br

% x °C

Temperature

Coefficent

of jHC

Relative Recoil

Permeability

µ rec

Minimum

saturation

field

KO/KAm

 

 
850 410-500 0.014-0.02 - 1.70-4.20 6.7/530    

Other typical physical properties (DIN 17410)

Density

g/cm3

Vickers

Hardness

Hv

Flexural

strength

N/mm2

Tensil

strength

N/mm2

Compression

strength

N/mm2

Elastic

module

N/mm2

Thermal

expansion

coefficent

10-6/k

Specific electric

resistivity

10-8/OHM/m

3.80-7.20

650

-

170-190

300 ca

-

11

45

For further technical information about mechanical tolerances, magnetization, temperature behaviour, hardness, glues, etc, etc...

CONSULT OUR TECHNICAL DEPARTMENT

 

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