Permalloy Alloy

Permalloy Alloy

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

Permalloy Alloy is a nickel–iron magnetic alloy, with about 80% nickel and 20% iron content. Invented in 1914 by physicist Gustav Elmen at Bell Telephone Laboratories,it is notable for its very high magnetic permeability, which makes it useful as a magnetic core material in electrical and electronic equipment, and also in magnetic shielding to block magnetic fields. Commercial permalloy alloys typically have relative permeability of around 100,000, compared to several thousand for ordinary steel.

Our Main Permalloy Alloy 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

Permalloy Alloys 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
High magnetic conductivity higher saturation magnetic flux density soft magnetic alloy 1J46 Ni46 E11e 46H 45-Permalloy

1J50 Ni50 E11a 50H Hy-Ra49
Permalloy

Permalloy Alloy Chemical composition:

Grade                  ChemicalComposition(%)

C P S Mn Si Ni Cr Co Mo Cu Fe
1J46 ≤0.03 ≤0.02 ≤0.02 0.6-1.1 0.15-0.30 45-46.5  -  -  - ≤0.2 Balance
1J50 ≤0.03 ≤0.02 ≤0.02 0.3-0.6 0.15-0.30 49-50.5  -  -  - ≤0.2 Balance
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

Permalloy Alloy  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
1J46 0.45 8.2 400 25 170 130 735
735
3
1J50 0.45 8.2 500 25 170 130 785 450 685 150 3 37
1J79 0.55 8.6 450 2 210 120 1030 560 980 150 3 50
1J85 0.56 8.75 400 0.5 - - - - - - - -

Permalloy Alloy Specification:

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

Permalloy Applications Flieds:

Uses of Permalloy include- transformer cores, telephones, securing sensitive medical apparatus in MRI, home theatre systems, shielding electrical systems from magnetic field drifts, tape wound toroids and lamentations where small size and weight factors are crucial.


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