About
Hite Special Alloy is a high-tech enterprise, mainly engaged in the production of Hastelloy, Monel, Inconel, nickel and other high-temperature alloys.
(Common name: Ni80Mo5, E11c, permalloy, 79HMA, PCS)
1J85 is a nickel iron magnetic alloy with a nickel content of about 80% and iron content of about 20%. It was invented by Gustav Elmen, a physicist at Bell Telephone Laboratory, in 1914. It is known for its extremely high magnetic permeability, which makes it useful as a magnetic core material in electrical and electronic equipment, as well as for shielding magnetic fields. Commercial permalloy alloys typically have a relative permeability of about 100000, compared to thousands of ordinary steels.
In addition to its high permeability, its other magnetic properties include low coercivity, near zero magnetostriction, and significant anisotropic magnetoresistance. Low magnetostriction is crucial for industrial applications, so it can be used in thin films where variable stress can cause significant damage to magnetic properties. The resistivity of permalloy can vary up to 5%, depending on the strength and direction of the applied magnetic field. Permalloy usually has a face-centered cubic crystal structure, with a lattice constant of approximately 0.355 nm at a nickel concentration of 80%. The disadvantage of permalloy is that its ductility or practicality is not high, requiring applications with complex shapes, such as magnetic shielding, made from other high permeability alloys, such as mu metal. Permalloy is used for transformer laminations and magnetic recording heads.
1J85 is widely used in the radio electronics industry, precision instruments, remote control, and automatic control systems.
1J85 alloy is a high initial magnetic permeability alloy, with a lower content than silicon steel sheet and electrical pure iron. Compared with other soft magnetic alloys, these alloys have high magnetic permeability and low coercive force under low magnetic fields. Some alloys also have rectangular hysteresis loops, or low residual magnetic induction strength and constant magnetic permeability, making them useful for special purposes.
1J85 alloy has good rust prevention and processing functions, and can be used to produce components with extremely fine shapes and dimensions. Because this type of alloy has a higher resistivity than pure iron and silicon steel sheets, it is easy to process into thin strips, even ultra-thin strips below a few microns, suitable for high-frequency applications below a few megahertz.
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