Skip to content

Mumetal / Magnetic Shielding Alloy

Mu-metal is a nickel–iron soft ferromagnetic alloy with very high permeability, which is used for shielding sensitive electronic equipment against static or low-frequency magnetic fields.

Mu-metal typically has relative permeability values of 80,000–100,000 compared to several thousand for ordinary steel. It is a "soft" ferromagnetic material; it has low magnetic anisotropy and magnetostriction, giving it a low coercivity so that it saturates at low magnetic fields. This gives it low hysteresis losses when used in AC magnetic circuits.

Other high-permeability nickel–iron alloys such as permalloy have similar magnetic properties; mu-metal's advantage is that it is more ductile, malleable and workable, allowing it to be easily formed into the thin sheets needed for magnetic shields.


Showing 3 product lines

Mumetal / Magnetic Shielding Alloy Sheet

Line Number & MaterialThicknessCompositionDescription
NI6554 Mumetal / Magnetic Shielding Alloy Sheet 0.355 mmNi80/Fe15/Mo5Temper annealed.View item
NI6553 Mumetal / Magnetic Shielding Alloy Sheet 0.5 mmNi80/Fe15/Mo5Temper annealed.View item
NI6556 Mumetal / Magnetic Shielding Alloy Sheet 1.0 mmNi80/Fe15/Mo5Temper stress annealed.View item

We use cookies to give you the best experience of using this website. By continuing to use this site, you accept our use of cookies. Please read our Cookie Policy for more information.