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Soft magnetic nickel-iron alloy with about 50 % nickel, 50% Iron, with a saturation induction of approximately 12,500 Gauss, an initial permeability of 40,000 and a maximum permeability of 150,000.
Alloy 49 exhibits high permeability at low induction, yielding adequate magnetic shielding medium to high flux density magnetic fields.
Silicon Iron is predominately and Iron alloy with 2 – 4 % silicon added, exhibiting a saturation induction of approx. 21,000 Gauss, an initial permeability of 6,000 and a maximum permeability of 60,000.
Silicon Iron exhibits high permeability at high induction, yielding superior magnetic shielding of high flux density magnetic fields.
Cryoperm and Cryophy are a soft magnetic nickel-iron alloys with about 80% nickel, 4.2 – 5.2% molybdenum, a saturation induction of approx. 8000 Gauss, the highest technically obtainable permeability, (Max > 350,000) and a very low coercive force. Cryoperm exhibits very high permeability at very low induction, yielding superior magnetic shielding attenuation of low flux density magnetic fields.
In addition, Cryoperm, Cryophy and other equivalent Cryogenic Magnetic Shielding Alloys are the magnetic shielding alloy of choice for cryogenic applications. Cryoperm/Cryophy exhibits very high permeability at 4.2 – 10 degrees Kelvin.
