Round Permalloy 80

Round Permalloy 80, a non-oriented 80% nickel-iron alloy, is processed to develop high initial permeability and low coercive force. It has lower squareness and core gain than the square type, as these characteristics are sacrificed to produce the high initial permeability and low coercive force properties. Round Permalloy 80 is especially useful in designing highly sensitive input and inter-stage transformers where signals are extremely low and DC currents are not present. It is also useful in current transformers where losses must be kept to a minimum and high accuracy is a necessity. The initial permeability of this material is between 20,000 and 50,000 with coercive force values about 70% that of Square Permalloy 80. 

Key Characteristics

  • Composition: Ni • Fe • Mo
  • Shapes: Toroid
  • Sizes: 7 mm to 250 mm
  • Flux Density (kG): 6.6 to 8.2
  • Coating Color: Red 

Round Permalloy 80 is a replacement for VAC discontinued nickel iron material (MUMETALL). 
VAC is a trademark of VACUUMSCHMELZE GmbH & Co. KG

How To Order Magnetics Tape Wound Core: Round Permally 80 

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Round Permally 80 Material Code: R

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
01501531R 1 RD PERM NONMETALC 0.038 3.49 0.456 0.02 9.53 12.70 3.18 7.95 14.45 5.05
01521531R 1 RD PERM GVB.ALUM 0.038 3.49 0.456 0.02 9.53 12.70 3.18      
01500561R 1 RD PERM NONMETALC 0.038 4.49 0.916 0.041 12.70 15.88 3.18 10.95 17.63 5.05
01520561R 1 RD PERM GVB ALUMINUM 0.038 4.49 0.916 0.041 12.70 15.88 3.18      
01501532R 2 RD PERM NONMETALC 0.043 3.49 0.456 0.02 9.53 12.70 3.18 7.95 14.45 5.05
01520562R 2 RD PERM GVB.ALUM 0.043 4.49 0.916 0.041 12.70 15.88 3.18      
01513745R 1/2 RD PERM ALUMINUM 0.043 7.48 - - 22.23 25.40 3.18      
01523745R 1/2 RD PERM GVB ALUM 0.043 7.48 - - 22.23 25.40 3.18      
01500564R 4 RD PERM NONMETALIC 0.045 4.49 0.916 0.041 12.70 15.88 3.18 10.95 17.63 5.05
01520564R 4 RD PERM ALUM GVB 0.045 4.49 0.916 0.041 12.70 15.88 3.18      
01520005R 1/2 RD PERM GVB.ALUM 0.05 4.99 0.916 0.081 12.70 19.05 3.18      
01521551R 1 RD PERM GVB.ALUM 0.076 3.99 0.724 0.061 11.13 14.30 6.35      
01500001R 1 RD PERM NONMETALIC 0.076 4.99 0.916 0.081 12.70 19.05 3.18 10.95 20.80 5.05
01520631R 1 RD PERM GVB ALUM 0.076 5.98 - - 15.88 22.23 3.18      
01520021R 1 RD PERM GVB ALUM 0.076 5.98 1.676 0.142 16.51 22.86 3.18      
01520111R 1 RD PERM GVB ALUM 0.076 8.97 4.238 0.365 25.40 31.75 3.18      
01500002R 2 RD PERM NONMETALC 0.086 4.99 0.916 0.081 12.70 19.05 3.18 10.95 20.80 5.05
01510002R 2 RD PERM ALUMINUM 0.086 4.99 0.916 0.081 12.70 19.05 3.18      
01500022R 2 RD PERM NONMETALC 0.086 5.98 1.676 0.142 16.51 22.86 3.18 14.76 24.61 5.05
01501342R 2 RD PERM NON-METALLIC 0.086 6.98 - - 19.05 25.40 3.18      
01500004R 4 RD PERM NONMETALC 0.091 4.99 0.916 0.081 12.70 19.05 3.18 10.95 20.80 5.05
01520004R 4 RD PERM GVB. ALUM 0.091 4.99 0.916 0.081 12.70 19.05 3.18      
01549732R 2 RD PERM ENCAPSULD 0.101 2.7 - - 6.10 11.07 4.78      
01549562R 2 RD PERM ENCAPSULD 0.119 3.31 - - 7.62 13.46 4.78      
01520032R 2 RD PERM GVB ALUM 0.129 6.73 - - 19.05 23.83 6.35      
01549702R 2 RD PERM ENCAP 0.131 4.77 - - 11.94 18.42 4.78      
01501761R 1 RD PERM NONMETALC 0.151 4.99 0.916 0.157 12.70 19.05 6.35 10.95 20.80 8.23
01520331R 1 RD PERM GVB.ALUM SK 0.151 5.98 1.534 0.263 15.88 22.23 6.35      
01500611R 1 RD PERM NONMETALC 0.151 6.98 2.273 0.39 19.05 25.40 6.35 17.04 27.41 8.48
01501762R 2 RD PERM NONMETALC 0.171 4.99 0.916 0.157 12.70 19.05 6.35 10.95 20.80 8.23
01500612R 2 RD PERM NONMETALC 0.171 6.98 2.273 0.39 19.05 25.40 6.35 17.04 27.41 8.48
01500334R 4 RD PERM NONMETALLIC 0.182 5.98 1.534 0.263 15.88 22.23 6.35 14.12 23.98 8.23
01520334R 4 RD PERM GVB.ALUM 0.182 5.98 1.534 0.263 15.88 22.23 6.35      
01500044R 4 RD PERM NONMETALC SK 0.182 8.97 4.238 0.724 25.40 31.75 6.35 23.39 33.76 8.48
01520764R 4 RD PERM GVB.ALUM 0.205 6.48 1.478 0.284 15.88 25.40 4.78      
01521064R 4 RD PERM GVB ALUMINUM 0.205 7.48 2.273 0.441 19.05 28.58 4.78      
01503232R 2 RD PERM NONMETALC 0.206 21.14 29.407 6.06 63.50 71.12 6.35 59.16 75.46 10.41
01500071R 1 RD PERM NONMETALC 0.227 6.48 1.478 0.38 15.88 25.40 6.35 13.87 27.41 8.48
01522851R 1 RD PERM GVB. ALUM 0.227 8.47 - - 22.23 31.75 6.35      
01520291R 1 RD PERM GVB ALUMINUM 0.227 9.47 4.438 1.09 25.40 34.93 6.35      
0153A292R 2 RD. PERM. BARE 0.228 7.31 - - 19.05 27.51 6.35      
01500341R 1 RD PERM NONMETALC 0.34 7.48 2.273 0.876 19.05 28.58 9.53 17.04 30.58 11.66
01520341R 1 RD PERM GVB.ALUM 0.34 7.48 2.273 0.876 19.05 28.58 9.53      
0153A392R 2 RD PERM BARE 0.342 9.3 - - 25.40 33.86 9.53      
01521672R 2 RD PERM ALUM GVB 0.343 6.98 - - 15.88 28.58 6.35      
01500324R 4 RD PERM NON-METALLIC 0.363 9.97 4.238 1.45 25.40 38.10 6.35 22.89 40.61 8.99
01521812R 2 RND PERM GVB ALUM 0.386 8.47 3.16 1.22 22.23 31.75 9.53      
01500944R 4 RD PERM NONMETALC 0.408 6.48 1.534 0.592 15.88 25.40 9.53 13.87 27.41 11.66
01501814R 4 RD PERM NONMETALC 0.408 8.47 3.16 1.22 22.23 31.75 9.53 20.22 33.76 11.66
01503154R 4 RD PERM NONMETALLIC 0.409 12.46 - - 34.93 44.45 9.53      
01523154R 4 RD PERM GVB ALUM 0.409 12.46 - - 34.93 44.45 9.53      
01520261R 1 RD PERM GVB ALUM 0.454 9.97 4.238 2.18 25.40 38.10 9.53      
01500262R 2 RD. PERM NONMETALC 0.514 9.97 4.238 2.18 25.40 38.10 9.53 22.89 40.61 12.17
01520262R 2 RD PERM GVB.ALUM 0.514 9.97 4.238 2.18 25.40 38.10 9.53      
01500982R 2 RD PERM NONMETALC 0.514 11.96 - - 31.75 44.45 9.53      
01500264R 4 RD PERM NONMETALC 0.545 9.97 4.238 2.18 25.40 38.10 9.53 22.89 40.61 12.17
01510264R 4 RD PERM ALUM 0.545 9.97 4.238 2.18 25.40 38.10 9.53      
01520381R 1 RD PERM GVB.ALUM 0.605 9.97 4.238 2.91 25.40 38.10 12.70      
01520351R 1 RD PERM GVB.ALUM 0.605 11.96 6.815 4.67 31.75 44.45 12.70      
01520551R 1 RD PERM GVB.ALUM 0.605 13.96 9.924 6.81 38.10 50.80 12.70      
01520911R 1 RD PERM GVB ALUMINUM 0.606 10.97 - - 28.58 41.28 12.70      
01524251R 1 RD PERM GVB.ALUM 0.681 12.96 6.815 5.26 31.75 50.80 9.53      
01504812R 2 RD PERM NONMETALIC 0.685 7.98 - - 19.05 31.75 12.70      
01500912R 2 RD PERM NON-METALLIC 0.685 10.97 - - 28.58 41.28 12.70      
01520352R 2 RD PERM GVB.ALUM 0.689 11.96 6.815 4.67 31.75 44.45 12.70      
01500354R 4 RD PERM NONMETALC 0.726 11.96 6.815 4.67 31.75 44.45 12.70 29.18 47.02 15.42
01540354R 4 RD PERM ENCAPSULD 0.726 11.96 6.815 4.67 31.75 44.45 12.70      
01503454R 4 RD PERM NON-METALLIC 0.726 15.95 13.787 9.46 44.45 57.15 12.70 41.12 60.48 15.93
01524254R 4 RD PERM GVB ALUMINUM 0.817 12.96 6.815 5.26 31.75 50.80 9.53      
01501031R 1 RD PERM NON METALLIC 1.21 19.94 17.894 24.5 50.80 76.20 12.70 47.47 79.53 15.93
01510151R 1 RD PERM ALUM 1.21 11.96 - - 63.50 69.85 4.78      
01500012R 2 RD PERM NONMETALIC 1.371 15.95 9.64 13.2 38.10 63.50 12.70 34.77 66.83 15.93
01501032R 2 RD PERM NON METALLIC 1.371 19.94 17.894 24.5 50.80 76.20 12.70 47.47 79.53 15.93
01505554R 4 RD PERM NON-METALLIC 1.452 13.96 6.699 9.19 31.75 57.15 12.70 28.42 60.48 15.93
01500014R 4 RD PERM NONMETALC 1.452 15.95 9.64 13.2 38.10 63.50 12.70 34.77 66.83 15.93
01501034R 4 RD PERM NONMETALC 1.452 19.94 17.894 24.5 50.80 76.20 12.70 47.47 79.53 15.93
01531992R 2 RD PERM UNCASED 2.056 13.96 - - 31.75 57.15 19.05      
Part Number Description Core
Area
cm2
Le
Path
Length
cm
Boxed
ID
min
mm
Boxed
OD
max
mm
Boxed
HT
max
mm
Maxwells
805315R016000 SS 531 1/2 RD PERM 0160MX   3.2 8.763 12.192 4.699 160
806135R040000 SS 613 1/2 RD PERM 0400MX   3 7.239 12.954 4.699 400
805171R060000 SS 517 1 RD PERM 0600MX   3.3 8.6868 12.954 8.128 600
806005R064000 SS 600 1/2 RD PERM 0640MX   2.9 7.112 12.192 8.128 640
806191R080000 SS 619 1 RD PERM 0800MX   3.9 10.16 15.367 8.128 800