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Soft Magnetic Alloys

Toroids tested at an applied magnetic field of 25 Oersteds (2000 Ampere-turns/m).  Properties also available at 500 and 1000 Oersteds.
 

430L Stainless Steel

Typical Applications:  Stainless steel with good corrosion resistance which is also a soft magnetic material.

Typical Mechanical Properties*

         
  English  Metric
 Density   7.4 g/cm3   7.4 x 103 kg/m3
 Maximum Induction   11.5 KGauss   1.15 Tesla
 Residual INduction   6.9 KGauss
  0.69 Tesla
 Maximum Permeability   1340
  17.4 x 10-4Henry/m
 Coercive Force   2.6 Oe   210 A/m

 

FE-3% Si

Typical Applications:  Iron-Silicon alloy used in low-frequency AC applications, solenoids, electromagnetic- mechanical devices, armatures, relays, pole pieces and cores for high speed printers.

Typical Mechanical Properties*

         
  English  Metric
 Density   7.5 g/cm3   7.5 x 103 kg/m3
 Maximum Induction   14.9 KGauss
  1.49 Tesla
 Residual INduction   13.0 KGauss
  1.30 Tesla
 Maximum Permeability   5200
  65 x 10-4Henry/m
 Coercive Force   1.0 Oe   80 A/m

 

FE-5% Mo

Typical Applications:  Remington alloy with high flux density and low coercive force.  

Typical Mechanical Properties*

         
  English  Metric
 Density   7.8 g/cm3   7.8 x 103 kg/m3
 Maximum Induction   15.5 KGauss
  1.55 Tesla
 Residual Induction   12.9 KGauss
  1.29 Tesla
 Maximum Permeability   2,930
  37 x 10-4Henry/m
 Coercive Force   1.8 Oe   140 A/m

Fe-35% Co

Typical Applications:  Fe-Co alloys produce the highest magnetic outputs; however, because of the high material cost, they are used for very small components.

Typical Mechanical Properties*

         
  English  Metric
 Density   7.7 g/cm3   7.7 x 103 kg/m3
 Maximum Induction   17.7 KGauss
  1.77 Tesla
 Residual INduction   9.0 KGauss
  0.90 Tesla
 Maximum Permeability   1880
  24 x 10-4Henry/m
 Coercive Force   2.6 Oe   210 A/m

FE

Typical Applications:
  Soft magnetic material used in applications requiring high magnetic output at lowest cost such as for cores and solenoids.

 

Typical Mechanical Properties*

         
  English  Metric
 Density   7.6 g/cm3   7.6 x 103 kg/m3
 Maximum Induction   15.9 KGauss
  1.59 Tesla
 Residual INduction   14.6 KGauss
  1.59 Tesla
 Maximum Permeability   2800
  35 x 10-4Henry/m
 Coercive Force   3 Oe   240 A/m


Fe-50% Ni


Typical Applications:
  Material with very low coercive force and high permeability. Used for torque motors, relays and missile components.  

Typical Mechanical Properties*

         
  English  Metric
 Density   7.7 g/cm3   7.7 x 103 kg/m3
 Maximum Induction   13.3 KGauss
  1.33 Tesla
 Residual INduction   8.3 KGauss
  0.83 Tesla
 Maximum Permeability   17,800
  220 x 10-4Henry/m
 Coercive Force   0.22 Oe 18 A/m

FE-50% Co

Typical Applications:  Fe-Co alloys produce the highest magnetic outputs; however, because of the high material cost, they are used for very small components.  

Typical Mechanical Properties*

         
  English  Metric
 Density   7.8 g/cm3   7.8 x 103 kg/m3
 Maximum Induction   20.7 KGauss
  2.07 Tesla
 Residual INduction   14.3 KGauss
  1.43 Tesla
 Maximum Permeability   5300
  67 x 10-4Henry/m
 Coercive Force   1.7 Oe   140 A/m