• Dali Electronics

SOFT MAGNETIC IRON NICKEL ALLOYS

Soft Magnetic Iron Nickel Alloy In India

Nickel is renowned for its good ductility and electrical conductivity. It has many fields of application:

  • As additional layer for a thermostatic bimetal to obtain a particular resistance
  • As additional layer for 1 and 2 Euro coins for authentication in vending machines
  • As cladding material for various coins
  • As soldering lug for batteries
  • As connecting strip for batteries
  • As various automotive components (e.g. car headlamp dippers)
  • As electrolytic anodes in for electroplating
  • As connectors in steam irons
  • As outer cap for transistors

Soft-magnetic strip is produced in FeNi alloys with a Ni content between 35 – 81%. The alloy Normaperm (35-40%) exhibits a particular increase in permeability in magnetic field strengths up to approx. 100 mOe. The alloys with 45-55% Ni have relatively high initial permeability and high induction saturation. The alloys with 76-81% Ni have high initial permeability values.

ALLOY

AMW-TRADE NAMEALLOYSTANDARDMATERIAL-NO. DIN/UNS
NormapermFeNi 36DIN 17745 / DIN 17405 / DIN IEC 740-21.3910 / 1.3911
NifemaxFeNi 48DIN 17745 / DIN 17405 / DIN IEC 740-2 / ASTM A 7531.3922 / 1.3926 /1.3927 K 94840
Perm 77FeNi 77CuMoDIN 17745 / DIN 17405 / DIN IEC 740 – 22.4530
Super-MunipermFeNi 80MoDIN 17745 / DIN 17405 / DIN IEC 740 – 2 / ASTM A 753 / MIL-N-14411C2.4545 N 14080

AVERAGE CHEMICAL COMPOSITION

AMW-TRADE NAMENiMnMoSCrCuC SiPFe
Normaperm360.3≤ 0.2≤ 0.008≤ 0.3≤ 0.3≤ 0.02≤ 0.2≤ 0.02Bal
Nifemax480.4≤ 0.2≤ 0.008≤ 0.3≤ 0.3≤ 0.02≤ 0.2≤ 0.02Bal
Perm 77770.54.1≤ 0.008≤ 0.3 4.4≤ 0.02≤ 0.2≤ 0.02Bal
Super-Muniperm800.54.9≤ 0.008≤ 0.3≤ 0.3≤ 0.02≤ 0.15≤ 0.02Bal

PHYSICAL PROPERTIES

AMW-TRADE NAMEDENSITYBsTcHcµ0.41µ max 1 MODULUS OF ELASTICITY
g/cm3T˚ CA/mDC/ACDC/ACGPa
Normaperm8.21.2240106000/500025000/20000135
Nifemax8.31.5470413000/9000150000/70000150
Perm 778.80.754100.5250000/100000300000/150000195
Super-Muniperm8.80.754100.5250000/100000300000/150000195

Measured on wound cores strip thickness 0.2 mm (reference value)

Bs – Saturation flux density

Tc – Curie temperature

Hc – Coercive force

µ 0.41 – Initial permeability

µmax 1  Maximum permeability

DC – Direkt Current

AC – Alternating Current

MECHANICAL PROPERTIES

AMW-TRADE NAME TEMPER YIELD STRENGTH Rp 0.2 MPa TENSILE STRENGTH Rm MPa VICKERS HARDNESS HV
Normaperm annealed 280 440 140
hard 750 800 230
Nifemax annealed 300 520 140
hard 800 850 250
Perm 77 annealed 320 630 160
hard 1000 1050 320
Super-Muniperm annealed 320 650 160
hard 1050 1100 330

DIMENSIONS AND TOLERANCES (mm)

THICKNESS TOLERANCES

THICKNESSWIDTH 10 -50WIDTH > 50 – 200WIDTH > 200 – 320
0.10 – 0.20+ 0.010± 0.015± 0.020
> 0.20 – 0.50+ 0.020± 0.020± 0.030
> 0.50 – 1.00+ 0.030± 0.030± 0.040
> 1.00+ 0.050± 0.050± 0.070

Other thickness and tolerances on request.

WIDTH TOLERANCES

WIDTHTHICKNESS 0.10 – 0.20THICKNESS > 0.20 – 0.50THICKNESS > 0.50 – 1.00THICKNESS > 1.00 – 2.00
10 – 50 ± 0.1± 0.2± 0.2± 0.3
> 50 – 200 ± 0.2± 0.3± 0.3± 0.4
> 200 – 320 ± 0.3± 0.4± 0.5± 0.6

Other width and tolerances on request.

LENGTH TOLERANCES (CUT LENGTH)

THICKNESSLENGTH 500 – 3000
10.40 – 2.00+ 10

Other tolerances on request.

PRODUCT FORM (mm)

FORMTHICKNESSWIDTHLENGTHCOIL-IDCOIL-OD
Strips0.10 – 2.0010 – 320 300 / 400 / 500max. 1050
Cut Length0.40 – 2.0050 – 320 500 – 300