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AlNiCo magnets

Short description

AlNiCo magnets are made of Aluminium, Nickel and Cobalt. Most AlNiCo magnets are cast. This can take place in complex forms.

Characteristics

  • Magnets are overmoulded
  • Complex shapes possible
  • High temperature resistance
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Alnico magnets

Detailed product description

AlNiCo magnets are made of aluminium, nickel and cobalt. Most AlNiCo magnets are cast, whereby the alloy is cast in a sand form in liquid state at very high temperatures. This can take place in complex forms, such as for example the form of a horseshoe.

Some versions are pressed and sintered. The magnetic properties are slightly diminished, but the mechanical properties improve.
To prevent demagnetisation the correct length/diameter proportion must be maintained.

AlNiCo permanent magnets - table

Grade Remanence Normal coercivity Intrinsic coercivity Max.
Energy product
Max.
operating
Temp.
  Br
mT
min
Hcb
kA/m
min
Hcj
kA/m
min
BH(max)
kJ/m3
min
°C
Cast AlNiCo
GSA-5A 1200  50 52 40 525 
GSA-5B 1250 52 54 44 525
GSA-6 1300 56 58 52 525
GSA-7 1350 58 60 60 525
GSA-8A 800 110 112 38 550
GSA-8B 900 115 117 44 550
GSA-9A 1000 110 112 60 550
GSA-9B 1080 120 122 80 550
Sintered AlNiCo
GSAS-5 1150 48 50 34 525
GSAS-6 1100 58 60 28 525
GSAS-8 800 110 112 38 550