Tim williams, in emc for product designers fifth edition, 2017. Rolling can also benefit the highfrequency magnetic properties which are limited. Our mu metal products are the best in the industry. Assimilating new research in the field of lowdimensional metals, this monograph provides a detailed overview of the current status of research on quasione and twodimensional molecular metals, describing normalstate properties, magnetic field effects, superconductivity, and the phenomena of interacting p and d electrons. Normally it is composed of 76% nickel, 16% iron, 6% copper and 2% chromium. Mumetal, also known as mu metal or mumetal is a nickeliron soft magnetic alloy with very high permeability widely used for shielding sensitive electronic equipment against magnetic fields. Conetic and amumetal are other trade names that companies use just like admu80 either they all should be allowed or they all should not.
The testcell consists of the mumetal strip toroid wound with a suitable number of turns of wire. Reflects incoming energies and makes the perfect base for magic mirrors. As the frequency rises these materials lose their permeability and hence shielding. Also lessons learned and special recommendations are included. Mumetal typically has relative permeability values of 80,000100,000 compared to several thousand for ordinary steel. Its a good metal to use for a magic wand because of this. I feel as if you will allow conetic and amumetal to be listed as other mu metal materials than admu80 should be listed as well. Mumetal is a common name for an 80% nickel, 4% molybdenum, 16% iron alloy with superbly high magnetic permeability. Evaluation of nearfield electromagnetic shielding effectiveness at. I have a vague recollection of reading that mumetals properties are severely reduced by any working, and that crt shields are processed after being formed into shape to restore their properties not sure if this is also the case with thin foil.
Mumetal is a nickeliron soft magnetic alloy with very high permeability, which is used for shielding sensitive electronic equipment against static or. Metals are lustrous, malleable, ductile, good conductors of heat and electricity. Typical mechanical properties stress annealed properties hardness. The complete headbanging history of heavy metal by ian christe, a history of heavy metal by andrew one. The number of turns of wire used is determined by the necessity to avoid magnetic saturation of. Mumetal is a unoriented nickeliron soft ferromagnetic alloy with very high permeability suitable for sensitive electronic equipment shielding. Mumetal properties mumetal high permeability magnetic. Check out our resources, tools, data sheets, material specs, faqs, videos, and articles about emi elf shielding, technical information and data. Mumetal magnetic shielding alloy mu metal grade astm a753 alloy 4, uns n14080, 80nife is our most widely known brand. We have decades of experience offering products to customers on the east coast, in the united states, and the entire globe. Mumetal should have range of nickeliron alloys, it should also notable for their high magnetic permeability.
Working predominantly with mumetal for over 60 years, the mushield company is an industry expert in determining when this material should be used for magnetic shielding applications as well as. For decades, scientists, engineers, metal suppliers and fabricators have referred to mumetal as the industry standard. Mumetal magnetic shielding material property data sheet product availability and request a quote, find complete details about mumetal magnetic shielding material property data sheet product availability and request a quote,mumetal,magnetic shielding,date sheet from nickel supplier or manufacturerxian gangyan special alloy co. Find great deals on ebay for mu metal and mu metal shield. The name of the alloy comes from the greek letter mu. A highpermeability material such as mumetal or its derivatives can give lf.
Metals books structure, deformation, and integrity of materials 2 vol set this first integrated approach to thermomechanics deals equally with the atomic scale, the mesoscale of microstructures and morphology, as well as the macroscopic level of actual components and workpieces for applications. Typical properties of magnetically annealed mu metal grade astm a753 alloy 4. Information and translations of mumetal in the most comprehensive dictionary definitions resource on the web. Magnetic shield corporation perfection mica company 740 n. Magnetic cartridges, which have a mumetal case to reduce interference when lps are played back hard drives, which have mumetal backings to the magnets found in the drive other materials with similar magnetic properties are supermalloy, supermumetal, nilomag, sanbold, molybdenum permalloy, ultraperm, m1040, etc.
We believe in creating the very best for the best customers in the world. It contains data on physical, elastic, mechanical, optical and thermal properties and specific data for use in space conditions. Hydrogen or vacuum heat treatment which method is the best. The effects of stress upon the magnetic properties of mumetal have been studied in detail. Carpenter technology a steel company calls it hyperm 80, and another name is permendur. The high permeability makes mumetal useful for shielding against static or lowfrequency magnetic fields. Other highpermeability nickeliron alloys such as permalloy have similar magnetic properties. Metals, nonmetals, and metalloids chemistry libretexts. Mumetal is a nickeliron soft magnetic alloy with very high permeability suitable for shielding sensitive electronic equipment against static. Fannin, in magnetic properties of fine particles, 1992. Mumetal high permeability magnetic shielding alloy astm. Mu metal is a soft ferromagnetic alloy that has extremely high initial and maximum magnetic permeability. The section of this book that i particularly enjoyed reading as a graduate student in the 1970s was the treatment of the humerothery rules.
Stainless steels, tool materials and specialpurpose metals, vol. Mu metal mechanical properties at ambient temperature reference guide density. Whereas its electrical resistivity is about the same as for mumetal, its initial and. Metals are solids at room temperature with the exception of mercury, which is liquid at room temperature gallium is liquid on hot days luster. The testcell consists of the mumetal strip toroid wound with a suitable number of. Fully annealed for maximum shielding characteristics. Mumetal is available in mumetal wire, mumetal round bar, mumetal forged bar, mumetal hex bar, mumetal flat bar, mumetal circles, mumetal ring, mumetal tube, mumetal seamless pipe, mumetal welded erw pipe, mumetal sheet, mumetal plate, mumetal coil, mumetal flanges, mumetal fasteners, mumetal socket weld. Materials and processes for use in space on launchers, satellites, payloads. Our products stand out because we have stuck to our principles and goals since our opening in 1963. Lf magnetic shielding, in the sense of blocking the passage of the magnetic flux, is best accomplished with materials which exhibit a high absorption loss such as steel, mumetal or permalloy. The longitudinal kerr effect has been used to study the domain p. Shielding factor calculations for single and multiple layer magnetic shields. Mumetal alloy generally attributes relative permeability about 80,000 to 100,000 than the normal steel alloy.