Amorphous Cores

 



Applications:

  • Distribution and power transformers
  • Motors
  • High frequency inductors
  • Current transformers
  • Devices requiring high permeability and low loss at low frequencies
Benefits:
  • Extremely low core loss less than 0.29 w/kg at 60 Hz, 1.35 Tesla, or 40% of the core loss of grade M3 electrical steel (core loss at 50 Hz is approximately 80% of 60 Hz values). This is for finished cores.
  • High permeability

 

 

Physical Properties

Density (g/cm3) As Cast . . . . . . . . . . . . .7.18
Vickers Hardness (50g load) . .. . . . . . . . .900
Tensil Strength (GPa) . . . . . . . . . . . . . . . .1-2
Elastic Modulus (GPa) . . . . . . .. . . . . 100-110
Lamination Factor (%) . . . . . . . . . . . . . . .>82
Thermal Expansion (ppm/C) . . . .. . . . . . .7.6
Crystallization Temperature (C) . . . . . . . .508
Continuous Service Temp. (C) . . . . . . . . .150
Magnetic Properties

Saturation Induction (T) As Cast . . . . . . . 1.56
Maximum D.C. Permeability ():
Annealed . . . . . . . . . . . . . . . . . . . . . .600,000
As Cast . . . . . . . . . . . . . . . . . . . . . . . 45,000
Saturation Magnetostriction (ppm) . . . . . . . 27
Electrical Resistivity (O.cm) . . . . . . . . . .130
Curie Temperature (C) . . . . . . . . . . . . . .399

 


Typical Core Loss Curves, Longitudinal Field Anneal

 



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