Mu-Metal Strip/Permalloy Alloy Strip/Soft Magnetic Strip

Mu-Metal Strip/Permalloy Alloy Strip/Soft Magnetic Strip

Model No.:

Permalloy 80, Permalloy 1J79;Permalloy 1J85,

Introduction:

Mu Metal offers high magnetic permeability Stock Forms: Wire,Strip, Bar, Sheet, Parts

Product Detail

Product Tags

Mu-Metal Strip/Permalloy Alloy Strip/Soft Magnetic Strip

Mu-Metal Mu Metal shield is a soft ferromagnetic alloy therefore it doesn’t attain residual magnetism after the removal of external magnetizing force. It has very high initial and maximum permeability with nominal hysteresis loss. It offers small coercive force, nominal core losses and small remanence. To obtain the necessary magnetic functionality, Mu metal should be heat processed in a dry hydrogen condition furnace with a dew point below – 40oC at 1100oC to 1180oC for 2 to 4 hours. This heat processing improves the magnetic permeability by 40 folds.

Our Main Mu-Metal is permalloy alloy 1J79 and 1J85

Cold rolling strip: 0.1mm-3.0mm×≤420mm 

Hot forged material:diamerter 5.5mm-250mm,square:40mm-240mm×40mm-240mm 
Cold drawing wire:diameter 0.1mm–18mm 
Hot rolling plate: 3.0mm-60.0mm×100mm-610mm 

Seamless tube:  φ6mm~φ219mm×0.5mm~18mm

Welded tube: φ1mm~φ120mm×0.1mm~10mm

Mu-Metal Strip Grade as below

Sort Grade Composition International Similar Grade



IEC Russia U.S.A.
High initial permeability of soft magnetic alloy

1J79

Ni79Mo4

E11c

79HMA

Mumeta

4-79 Permalloy Supermalloy


1J85

Ni80Mo5

E11c

79HMA


Mu-Metal Strip Chemical composition:

Grade                  ChemicalComposition(%)

C P S Mn Si Ni Cr Co Mo Cu Fe
1J79 ≤0.03 ≤0.02 ≤0.02 0.6-1.1 0.30-0.50 78.5-81.5  -  - 3.8-4.1 ≤0.2 Balance
1J85 ≤0.03 ≤0.02 ≤0.02 0.3-0.6 0.15-0.30 79-81 - - 4.8-5.2 ≤0.2 Balance

Mu-Metal Strip  Mechanical Property :                                      

Grade Resisitivity
(μΩ•m)
Desinty (g/cm3) CuriePoint
HighSaturatedmagneto-strictioncoefficient
λθ/10-6
Brinellhardness
HBS
σbTensile
Strength
MPa
σsYieldStrength
MPa
Elongation
(%)δ
unan-
nealed
an-
nealed
unan-
nealed
an-
nealed
unan-
nealed
an-
nealed
unan-
nealed
an-
nealed
1J79 0.55 8.6 450 2 210 120 1030 560 980 150 3 50
1J85 0.56 8.75 400 0.5 - - - - - - - -

Mumetal Strip Specification:

       Bar      Wire      Strip      Sheet    Fittings
                     ASTM A-753-78, , MIL-N-14411 B (MR) GBn198-1988

Mu Metal Strip Applications Flieds:

Electric transformer: Mu metal avoids contact to surrounding circuits.

Storage disks: In hard disks, mu metal prevents interfere of magnetic field to disk.

Mu metal is used in cathode ray tubes to avoid drift in magnetic fields due to redirected electron beam.

Other uses are in magnetic phonographs, magnetic resonance imaging devices, photomultipliers, vacuum containers and superconducting circuits.


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