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Technologically Advanced, Technologically Sound

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 the fabrication of mumetal magnetic shields. Meeting ASTM A753 Alloy Type 4, and MIL-N-14411 Composition 1, this soft ferromagnetic material distributes a high initial and maximum permeability and is the best material for most magnetic shielding applications.

Often times, we will receive quote requests for mumetal sheet stock from other sheet metal fabrication shops that have never worked with the material before. While we will gladly sell raw material, we like to extend our expertise to our customers. After diving into their specific magnetic shielding needs, more often than not, we end up quoting to fabricate a magnetic shield complete with hydrogen heat treatment. Our customers trust us with the production of their highly important magnetic shields because we have the experience working with mumetal, as well as the top-of-the-line equipment needed to produce and heat treat magnetic shields.

If you’ve never worked with mumetal or don’t work with it on a regular basis, don’t waste time and money trying to figure out how this material may react to your specific machinery, or worrying about scrapping material. Let MuShield be your one-stop shop for all magnetic shielding needs. From design to delivery, MuShield guarantees only the highest quality magnetic shielding products and we pride ourselves in supplying you with Magnetic Shielding That Works!

Contact us today at or 603-666-4433 with any mumetal or magnetic shielding questions.

What Is mumetal?


mumetal is a soft ferromagnetic material that does not retain a macroscopic internal field after the removal of an external magnetizing field. Meeting ASTM A753 Alloy Type 4, and MIL-N-14411 Composition 1, mumetal is the material of choice when seeking out the best high permeability magnetic shielding alloy for a magnetic shield that demands a permeability value of 250,000+.

MuShield has become the worldwide industry leader of custom mumetal magnetic shielding. Whether it’s 1,000,000 simple magnetic shields that you can fit in the palm of your hand, or a mumetal enclosure that a fully grown human can fit inside of, MuShield can produce it.

Want to know more about mumetal magnetic shielding?

Contact us today at or 603-666-4433.

Magnetic Shields

mumetal Applications


It may not be obvious, but you’d be surprised at just how many items you use day to day, or may come across in the span of your lifetime that has mumetal magnetic shielding manufactured within them. As we continue to operate as a society that relies on technology and electronics on a daily basis, the need to shield the electromagnetic interference emitting from that vast pool of devices, or protecting these sensitive electronics from outside forces is vital.

  • Have you ever been in medical facility? Well, if you have you were (unknowingly) surrounded by  mumetal magnetic shields. Within state-of-the-art MRI systems to small disposable parts, mumetal is in a broad spectrum of medical devices and accessories.
  • Have you ever walked through a security scanner at the airport? You just walked between a mumetal magnetic shielding product.
  • Do you work in the military or are you interested in the advancement of our armed forces? MuShield has produced mumetal magnetic shields for hundreds of different defense applications that help keep our country safe.
  • Do you navigate in your daily life through GPS systems? Without magnetic shielding this technology would be inaccurate.

At MuShield, we take great care in producing mumetal magnetic shields for our customers. We understand how imperative these magnetic shields are to our customers’ applications working properly during testing and in the field. To save customers time and money, we produce magnetic shields that work right the first time.


At MuShield, we take great care in fabricating custom mumetal magnetic shielding for our customers. We understand how imperative these magnetic shields are to our customers’ applications working properly during the testing period and in the active field. To save customers time and money, we produce the process of developing magnetic shields that work right the first time no matter the scale.

Industries we serve include (but are not limited to):

  • Aerospace
  • Medical Devices
  • Military
  • Utilities
  • Petroleum Exploration
  • GPS Communications

If you require magnetic shielding as a part of any project you’re about to undertake, feel free to contact us today to learn how we can help facilitate a custom plan that advances your unique magnetic shield needs.

Do you have a need for custom mumetal magnetic shielding?

Contact us today with your design
or any questions at or 603-666-4433.


mumetal Seamless Tubing

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