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Cryoperm is a soft magnetic nickel-iron alloy 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 is the magnetic shielding alloy of choice for cryogenic applications. Cryoperm exhibits very high permeability at 4.2 – 10 degrees Kelvin.

By the early 2000s, MuShield saw incredible company growth and outgrew their Goffstown building. In 2004, MuShield purchased a 19,000 sq. ft. building in Londonderry, New Hampshire. This additional plant space enabled the company to invest in larger machines such as an IPG LaserCube, Cincinnati Hydroform, Trumpf 5 Axis laser, Multi Axis Hurco Milling Center and a second hydrogen furnace (among other machines). The increase in floor space led to increased work capacity and allowed for MuShield to become more involved with larger and more diverse magnetic shielding applications.

Since the company’s inception, David and Bob have welcomed their sons Luke Grilli and Brett Joy into management roles. Following in their fathers’ footsteps, MuShield is a true family business.

MuShield and its principals have been an industry leader in magnetic shielding solutions for 40+ years and will continue and build on their tradition of success for decades to come.

MuShield was the first in the magnetic shielding industry to be ISO 9001 certified more than 10 years ago. With our latest ISO9001:2015 and AS9100D certifications, MuShield’s manufacturing operations are reliable, repeatable, and efficient.

For more information, contact us today!