Limag

Cast AlNiCo Magnets

Cast AlNiCo Magnets

Cast AlNiCo magnets have been part of Magneti Ljubljana production range for over 50 years. Experience and vast technological knowledge in production of this type of magnets ensures the fulfillment of any customer’s specific requirement. AlNiCo alloys with precisely defined chemical compositions are melted in inductive melting furnaces and cast into sand molds prepared from resin coated sand. Depending on chemical composition and production process cast AlNiCo magnets can be either isotropic or anisotropic.

Cast AlNiCo advantages

HIGH

REMANENCE – Br

HIGH OPERATING

TEMPERATURE

GOOD CORROSIVE

RESISTANCE

GOOD LONG TERM AND

TEMPERATURE STABILITY

limag

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 [HV] 55
Specific electrical resistance [μΩcm] 45-55
Specific heat [J/kgK] 300
Specific thermal conductivity [W/mK] 12
Curie temperature [°C] 820-890
Temperature Coefficient—TK Br [%/K] -0,2
Required magnetising field strength [kA/m] 300

MAGNETIC PROPERTIES

LIMAG
Typical values
Remanence Br
[T]
Coercivity HcB
[kA/m]
Instrinsic Coercivity
HcJ [kA/m]
Energy product (BH)max
[kJ/m3]
Limag 190 0,8 64 65 19
Limag 250 0,64 90 92 18
Limag 400 K 1,04 60 62 32
Limag 500 1,2 50 51 38
Limag 500 B 1,25 52 53 43
Limag 1500 0,89 124 126 40

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

Due to slightly higher physical density cast AlNiCo magnets in general have slightly higher magnetic properties comparing with the same grade of Sintered AlNiCo magnets.

 

On the other hand, due to economical reasons, casting AlNiCo technology compared to sintered AlNiCo technology is usually more suitable for larger dimensions and not very complex forms. Within range of cast AlNiCo magnets magnetic properties can be adjusted according to customer’s requirements, taking into account the general limitations.

 

 

They can be manufactured to attain wide range of magnetic properties which can meet various specifi c requirements based on various fi elds of applications.

catalogue magneti pdf

Product Catalog 2018

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