Description

Permalloy is a highly magnetic nickel-molybdenum-iron alloy, with roughly *0% nickel and *5% iron and 5% molybdenum content. It's useful as a magnetic core material in electrical and electronic equipment. Commercial permalloy alloys typically have relative permeability of around **0,**0, compared to several thousand for ordinary steel. If provide maximum magnetic permeabilities and minimal core losses at low field strengths. This vacuum-melted product also offers the advantages of small size and weight in magnetic core and shielding materials for the applications shown below. Other magnetic properties are near zero magnetostriction, and significant anisotropic magnetoresistance.  
  
Permalloy provides high initial and maximum permeabilities with low coercive force, low hysteresis loss, low eddy-current losses, and low magnetostriction which is critical for industrial applications, allowing it to be used in thin films where variable stresses would otherwise cause a large destructive variation in magnetic properties. Typical applications for this material are: 
- Transformer laminations 
- Relays 
- Recording Heads 
- Deflection and Focusing Yokes 
- Amplifiers 
- Loudspeakers 
- Shielding

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