Ad-Vance Magnetics, Inc.

AD-MU Magnetic Shielding Alloys protect permanently. No excessive loss of permeability from shock. Relatively stable permeability characteristics are exhibited after final anneal. Minimal retentivity is displayed by AD-MU Magnetic Shielding Alloys for any alloy of a given permeability. AD-MU Magnetic Shielding Alloys are compliant with EU-Rohs directive 200295EC and are certified with full compliance with DFARS clause 252.255-7014 (Alt 1) and the REACH program. AD-MU-80 & AD-MU-48 meet material specification ASTM A 753-08. AD-MU-80 and AD-MU-48 are equivalent to MIL-N-14411c Comp.1 & 2 which is now obsolete.

For the convenience of those desiring to design and manufacture prefabricated magnetic shields in-house, AD-MU magnetic shielding sheet stock material is readily available and easy to work with. It may be formed by bending stamping, drawing etc. on ordinary sheet metal working equipment. AD-MU magnetic shielding material can be finished by plating or MIL spec painting. AD-MU-80 and AD-MU-48 magnetic shielding materials meet ASTM A-753 and is equivalent to MIL-N-14411c which is no obsolete.

Magnetic shielding is needed to protect critical electronic components from unwanted interference. A magnetic shield will divert the magnetic field around it and various different directions. This is similar to how a rock diverts water around it in a river stream. The most common magnetic shielding materials are Ad-Mu-80 and Ad-Mu-48, which high permeability and medium permeability magnetic shielding materials.

Custom fabricated magnetic shields can be made to protect any kind of equipment in almost any configuration. Magnetic shield shapes can range from a simple box, conical or cylindrical configurations to more complex shapes and sometimes conform to inside or on top of another unit. In complex situations magnetic shields are fabricated to fit exactly and can consist of many unusual configurations. With our in house fabrication capabilities we can stamp, spin, bend, laser cut, photo etch, weld, spot weld and assemble magnetic shields your exact specification. For more information on our fabrication services please visit our Metal Fabrication page.

Selecting a magnetic shield for photomultiplier tubes is simplified because Ad-Vance Magnetics has fabricated magnetic shields for most PM tubes sizes and are already tooled up for most of the PM tube sizes. It is only necessary to inform us of the PM tube manufacture's name associated on our PMT Shield list (located below) and the tube’s number to obtain the correct magnetic shield shape. If your tube is not listed on our list please let us know the sizes you wish for the magnetic shield to be and we can custom fabricate this magnetic shield for you and most times can still use current tooling. PMT Magnetic shields can be supplied with or without a flat black enamel coating on both the inside and outside surfaces.

Here at Ad-Vance Magnetics we can stress anneal to relieve all strains and restore the material to a soft condition suitable for further drawing, spinning or other forming operations. Forming operations such as these will cause the magnetic shielding characteristics of high permeability materials to degrade.