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Nickel-based Mu-metal shielding cans are high-permeability (typically 80% nickel-iron) enclosures designed to attenuate low-frequency magnetic fields, protecting sensitive components like transformers, sensors, and circuits. They operate by redirecting magnetic flux through the shield material, preventing interference.
This video explains how mu metal acts as a magnetic shield:
Key Features and Applications
- Material: Usually made from MuMETAL®, Co-NETIC®, or other high-nickel alloys to ensure maximum magnetic permeability.
- Shapes & Sizes: Available in round or rectangular, 5-sided configurations, often with internal (IDLID) or external (ODLID) fitting lids.
- Manufacturing: Fabricated through deep drawing, stamping, spinning, or TIG welding.
- Common Uses: Crucial for protecting sensitive electronic components, specifically audio transformers, power inverters, and magnetic sensors from EMI.
- Thickness Options: Common thicknesses range from 0.014 to 0.062 inches ().
This video demonstrates how to use mu metal foil for shielding:
Performance Characteristics
- Magnetic Saturation: Mu-metal saturates at relatively low fields (approx. 8,000 Gauss), making it ideal for low-intensity, sensitive environments.
- Performance: Provides excellent low-frequency magnetic field attenuation with low coercive forces.
- Customization: Custom sizes are often produced to meet specific shielding requirements.
This video explains how to test the shielding capabilities of mu metal:
Manufacturers & Suppliers
- Magnetic Shield Corporation (MuMETAL®)
- MuShield
- Geistnote (specialized audio cans)
- Honger Tech
- Botou Hi-Tech Electronic Parts Co
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Web results
MuMETAL® Cans & Lids
Magnetic Shield Corporation
https://www.magnetic-shield.com › mumetal-cans-lids-r...
Magnetic Shield Corporation
https://www.magnetic-shield.com › mumetal-cans-lids-r...
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We offer a wide range of standard MuMETAL® Shielding Cans in either ROUND or RECTANGULAR shapes. All MuCans are 5-sided and most sizes offer optional Lids.Read more
Nickel Based Mu Metal Shielding Can Suppliers ...
Jiangsu Hongyun Precision Industry Co., Ltd.
https://www.hongertech.com › nickel-based-mu-metal-s...
Jiangsu Hongyun Precision Industry Co., Ltd.
https://www.hongertech.com › nickel-based-mu-metal-s...
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Mu Metal Shielding cans are typically manufactured from high permeability Mu Metal and provide excellent low frequency magnetic field attenuation with low ...Read more
Mu Metal deep drawn shield can - Customizer by Hexin
Ningbo Hexin Electronics Co.,Ltd.
https://www.ksunrise.com › mu-metal-deep-drawn-shiel...
Ningbo Hexin Electronics Co.,Ltd.
https://www.ksunrise.com › mu-metal-deep-drawn-shiel...
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Mu metal material, which is a type of nickel-iron alloy used for its magnetic shielding properties. Mu metal has been around since the early 20th century.Read more
Mu-Metal Magnetic Shielding
Aircraft Spruce
https://www.aircraftspruce.com › elpages › edmomumetal
Aircraft Spruce
https://www.aircraftspruce.com › elpages › edmomumetal
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MuMetal® foil is designed for use in low intensity fields where the highest attenuation and permeability µ(Mu) and highest shielding efficiency are desired.Read more
$7.50In stock$31.39 delivery30-day returns
MuMetal® Magnetic Shielding for Sensitive Environments
Magnetic Shields USA
https://magneticshields-usa.com › mumetal-magnetic-sh...
Magnetic Shields USA
https://magneticshields-usa.com › mumetal-magnetic-sh...
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MuMETAL® Foil is a fully annealed, high-permeability nickel iron alloy designed for applications requiring the highest magnetic attenuation and shielding ...Read more
MuMETAL | K&J Magnetics Blog
K&J Magnetics
https://www.kjmagnetics.com › blog › mumetal
K&J Magnetics
https://www.kjmagnetics.com › blog › mumetal
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Mu-METAL is an alloy of nickel and iron used for magnetic shielding. You can find it inside many electronic devices, from hard drives to CRT televisions.Read more
Discussions and forums
Low Cost Magnetic + Electrical Shielding Enclosure
EEVblog ·Â
8 months ago
Low Cost Magnetic + Electrical Shielding Enclosure
EEVblog ·Â
8 months ago
Where can I find mu metals for magnetic shielding?
Quora ·Â
1 answer
 · 10 years ago
Where can I find mu metals for magnetic shielding?
Quora ·Â
1 answer
 · 10 years ago
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Web results
4 Ways of Reducing Cost of Magnetic Shielding
Integran Technologies
https://www.integran.com › post › 4-ways-of-reducing-...
Integran Technologies
https://www.integran.com › post › 4-ways-of-reducing-...
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Feb 4, 2013 — MuMetal and other high nickel content specialty metal alloys are commonly used for high performance magnetic shielding (aka ELF shielding or ...
Mu-Metal Transformer Can-Botou Hi-Tech Electronic Parts Co ...
hi-techhermeticseal.com
https://www.hi-techhermeticseal.com › products_detail
hi-techhermeticseal.com
https://www.hi-techhermeticseal.com › products_detail
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Specializing in the production of Mu metal magnetic shielding cans for audio transformer and other audio equipments.Read more
MuMetal Shielding: Principles & Applications
Emergent Mind
https://www.emergentmind.com › topics › mumetal-shi...
Emergent Mind
https://www.emergentmind.com › topics › mumetal-shi...
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Dec 11, 2025 — MuMetal Shielding is a high-permeability Ni–Fe alloy engineered for passive protection against low-frequency and static magnetic fields.Read more