Simag

Sintered AlNiCo Magnets

Similarly to cast AlNiCo magnets, sintered AlNiCo magnets have also been part of Magneti Ljubljana’s production for decades. Market proven proficiency in production of this type of magnets ensures fulfilment of any customer’s specific requirements. Sintered AlNiCo magnets are prepared by compacting powder mixtures with defined chemical composition and grain size distribution in a press and then sintering in vacuum sintering furnaces.

simag

Sintered AlNiCo advantages

HIGH OPERATING

TEMPERATURE

GOOD CORROSIVE

RESISTANCE

GOOD LONG TERM AND

TEMPERATURE STABILITY

PHYSICAL PROPERTIES

Characteristic[Unit]Typ. value
Density[g/cm3]7,2
Elasticity Modulus[kN/mm2]100-200
Bending Strength[N/mm2]250-600
Compression Strength[N/mm2]300-400
Hardness[HRc]55
Specific electrical resistance[μΩcm]45-65
Specific heat[J/kgK]300
Specific thermal conductivity[W/mK]12
Curie temperature[°C]820-890
Temperature Coefficient—TK Br[%/K]-0,02
Required magnetising field strength[kA/m]300

MAGNETIC PROPERTIES

SIMAG
Typical values
Remanence Br
[T]
Coercivity HcB
[kA/m]
Instrinsic Coercivity
HcJ [kA/m]
Energy product (BH)max
[kJ/m3]
Simag 2500,60858718
Simag 400 K1,01606232
Simag 5001,25505238
Simag 15000,8512412640
Simag 1500 HR0,9112212445
Simag 18000,7515015543

They can be manufactured to attain a wide range of magnetic properties which can meet various specific requirements based on various fields of application, such as:

– various types of sensors in automotive industry
– DC motors
– Mechanical kWh meters
– Safety switches, etc.

Due to slightly lower physical density, sintered AlNiCo magnets in general have slightly lower magnetic properties comparing with the same grade of Cast Alnico magnets. However, due to the different production process, they can be manufactured in more complex forms, and from an economical point of view, sintering technology is better suited for manufacturing smaller sized AlNiCo magnets. Within the range of AlNiCo magnets, magnetic properties can be adjusted according to the customer’s requirements, taking into account the general limitations.

catalogue magneti pdf

Product Catalog 2019

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