48 Alloy

48 Alloy, a 50% nickel-iron alloy, has a round B-H loop and exhibits lower saturation flux density, squareness, coercive force, and core gain than the Orthonol types. It is useful in devices requiring lower coercive force such as special transformers, saturable reactors, and proportioning magnetic amplifiers. AC core losses are typically lower than with Orthonol.

Key Characteristics

  • Composition: Ni • Fe
  • Shapes: Toroid
  • Sizes: 7 mm to 250 mm
  • Flux Density (kG): 11.0 to 14.0
  • Coating Color: Red 

View 48 Alloy Material Property Curves including Core Loss vs. Induction Level Curves and Typical Hysteresis Loops. 

How To Order Magnetics Tape Wound Core: 48 Alloy 

Learn more about Tape Wound Core Cases and Coatings 

48 Alloy is a replacement for VAC discontinued nickel iron material (PERMAX M®). 
VAC is a trademark of VACUUMSCHMELZE GmbH & Co. KG

48 Alloy Material Code: H

Part Number Description
Core Area
cm2
Le
Path Length
cm
Wa
Window Area
cm2
WaAc
cm4
Bare ID
mm
Bare OD
mm
Bare HT
mm
Boxed
ID min
mm
Boxed
OD max
mm
Boxed
HT max
mm
01504022H 2 ALLOY 48 NONMETALLIC 0.022 3.25 0.456 0.01 9.53 11.13 3.18 7.77 12.93 5.05
01514022H 2 ALLOY 48 ALUMINUM 0.022 3.25 0.456 0.01 9.53 11.13 3.18      
01511532H 2 ALLOY 48 ALUMINUM 0.043 3.49 0.456 0.02 9.53 12.70 3.18      
01521532H 2 ALLOY 48 GVB ALUMINUM 0.043 3.49 0.456 0.02 9.53 12.70 3.18      
01520562H 2 48 ALLOY GVB.ALUM 0.043 4.49 0.916 0.041 12.70 15.88 3.18      
01500002H 2 48 ALLOY NONMETALIC 0.086 4.99 0.916 0.081 12.70 19.05 3.18 10.95 20.80 5.05
01549562H 2 48 ALLOY ENCAPSULD 0.119 3.31 - - 7.62 13.46 4.78      
01549552H 2 ALLOY 48 ENCAPSULD 0.158 3.31 - - 7.62 13.46 6.35      
01501762H 2 48 ALLOY NONMETALIC 0.171 4.99 0.916 0.157 12.70 19.05 6.35 10.95 20.80 8.23
01521762H 2 48 ALLOY GVB ALUM 0.171 4.99 0.916 0.157 12.70 19.05 6.35      
01500042H 2 ALLOY 48 NONMETALC 0.171 8.97 4.238 0.724 25.40 31.75 6.35 23.39 33.76 8.48
01532624H 4 48 ALLOY UNCASED 0.175 9.8 - - 28.83 33.60 8.13      
01520614H 4 48 ALLOY GVB.ALUM 0.182 6.98 2.273 0.39 19.05 25.40 6.35      
0154B582H 2 48 ALLOY ENCAPSULD 0.193 4.49 - - 9.53 19.05 4.78      
01547422H 2 48 ALLOY ENCAPSULD 0.193 5.48 - - 12.70 22.23 4.78      
01548732H 2 48 ALLOY ENCAPSULD 0.201 3.93 - - 9.53 15.49 7.92      
01547682H 2 48 ALLOY ENCAPSULD 0.257 4.99 - - 12.70 19.05 9.53      
01500292H 2 48 ALLOY NONMETALC 0.257 9.47 4.438 1.09 25.40 34.93 6.35 22.89 37.44 8.99
01520292H 2 48 ALLOY GVB.ALUM 0.257 9.47 4.438 1.09 25.40 34.93 6.35      
01500074H 4 48 ALLOY NONMETALC 0.272 6.48 1.478 0.38 15.88 25.40 6.35 13.87 27.41 8.48
01520184H 4 48 ALLOY GVB ALUM 0.272 14.46 - - 41.28 50.80 6.35      
01503912H 2 ALLOY 48 NONMETALC 0.343 8.97 4.435 1.52 25.40 31.75 12.70 23.01 34.14 15.21
01500944H 4 48 ALLOY NONMETALC 0.408 6.48 1.534 0.592 15.88 25.40 9.53 13.87 27.41 11.66
01540944H 4 ALLOY 48 ENCAPSULATED 0.408 6.48 1.534 0.592 15.88 25.40 9.53      
01500344H 4 48 ALLOY NONMETALC 0.408 7.48 2.273 0.876 19.05 28.58 9.53 17.04 30.58 11.66
01501882H 2 48 ALLOY NONMETALC 0.514 7.98 2.238 1.15 19.05 31.75 9.53 17.04 33.76 11.66
01510262H 2 48 ALLOY ALUMINUM 0.514 9.97 4.238 2.18 25.40 38.10 9.53      
01520262H 2 ALLOY 48 GVB ALUMINUM 0.514 9.97 4.238 2.18 25.40 38.10 9.53      
01510982H 2 ALLOY 48 ALUMIN 0.514 11.96 - - 31.75 44.45 9.53      
01501334H 4 48 ALLOY NONMETALC 0.545 7.18 1.676 0.861 16.51 29.21 9.53 14.50 31.22 11.66
01501884H 4 48 ALLOY NONMETALC 0.545 7.98 2.238 1.15 19.05 31.75 9.53 17.04 33.76 11.66
01510171H 1 ALLOY 48 ALUMINUM 0.605 17.95 18.182 12.5 50.80 63.50 12.70      
01504812H 2 ALLOY 48 NONMETALIC 0.685 7.98 - - 19.05 31.75 12.70      
01510172H 2 ALLOY 48 ALUMINUM 0.689 17.95 18.182 12.5 50.80 63.50 12.70      
01500354H 4 ALLOY 48 NON-METALLIC 0.726 11.96 6.815 4.67 31.75 44.45 12.70 29.18 47.02 15.42
01500554H 4 48 ALLOY NONMETALIC 0.726 13.96 9.924 6.81 38.10 50.80 12.70 35.59 53.31 15.34