Magnesil

Magnesil, a grain-oriented 3% silicon-iron alloy, is processed and annealed to develop high squareness and low core loss. It is usually used in high quality toroidal power transformers, current transformers and high power saturable reactors and magnetic amplifiers. It exhibits high saturation flux density with high squareness but has comparatively high coercive force and core loss. With its high Curie temperature, it is quite useful in magnetic devices which are to be exposed to temperatures between 200ºC (392ºF) and 500ºC (932ºF). At higher temperatures, uncased cores should only be used due to case temperature limitations. 

Key Characteristics

  • Composition: Si • Fe
  • Shapes: Toroid
  • Sizes: 7 mm to 250 mm
  • Flux Density (kG): 15.0 to 18.0
  • Coating Color: Red 

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

How To Order Magnetics Tape Wound Core: Magnesil

Learn More about Tape Wound Core Cases and Coatings 

Magnesil Material Code: K

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
HTmax
mm
01504022K 2 MAGNESIL NON-METALLIC 0.022 3.25 0.456 0.01 9.53 11.13 3.18 7.77 12.93 5.05
01534022K 2 MAGNESIL UNCASED 0.022 3.25 0.456 0.01 9.53 11.13 3.18      
01501532K 2 MAGNESIL NONMETALLIC 0.043 3.49 0.456 0.02 9.53 12.70 3.18 7.95 14.45 5.05
01521532K 2 MAGNESIL GVB ALUMINUM 0.043 3.49 0.456 0.02 9.53 12.70 3.18      
01500562K 2 MAGNESIL NONMETALIC 0.043 4.49 0.916 0.041 12.70 15.88 3.18 10.95 17.63 5.05
01500572K 2 MAGNESIL NONMETALLIC 0.043 5.48 1.534 0.066 15.88 19.05 3.18 14.12 20.80 5.05
01500564K 4 MAGNESIL NONMETALIC 0.045 4.49 0.916 0.041 12.70 15.88 3.18 10.95 17.63 5.05
01533744K 4 MAGNESIL UNCASED 0.046 7.48 - - 22.23 25.40 3.18      
01530864K 4 MAGNESIL UNCASED 0.046 8.47 - - 25.40 28.58 3.18      
0153D332K 2 MAGNESIL UNCASED 0.073 3.66 - - 6.22 17.09 1.59      
01500002K 2 MAGNESIL NONMETALIC 0.086 4.99 0.916 0.081 12.70 19.05 3.18 10.95 20.80 5.05
01540002K 2 MAGNESIL ENCAPSULD 0.086 4.99 0.916 0.081 12.70 19.05 3.18      
01500022K 2 MAGNESIL NONMETALC 0.086 5.98 1.676 0.142 16.51 22.86 3.18 14.76 24.61 5.05
01540022K 2 MAGNESIL ENCAPSULD 0.086 5.98 1.676 0.142 16.51 22.86 3.18      
01500004K 4 MAGNESIL NONMETALC 0.091 4.99 0.916 0.081 12.70 19.05 3.18 10.95 20.80 5.05
01520004K 4 MAGNESIL GVB.ALUM 0.091 4.99 0.916 0.081 12.70 19.05 3.18      
01540004K 4 MAGNESIL ENCAPSULD  0.091 4.99 0.916 0.081 12.70 19.05 3.18      
01540024K 4 MAGNESIL ENCAPSULD 0.091 5.98 1.676 0.142 16.51 22.86 3.18      
01541344K 4 MAGNESIL ENCAPSULD 0.091 6.98 - - 19.05 25.40 3.18      
01526664K 4 MAGNESIL GVB ALUM 0.091 9.97 - - 28.58 34.93 3.18      
0153D694K 4 MAGNESIL UNCASED 0.099 5.01 - - 11.63 20.27 2.54      
01549562K 2 MAGNESIL ENCAPSULD 0.119 3.31 - - 7.62 13.46 4.78      
01536322K 2 MAGNESIL UNCASED 0.129 4.99 - - 12.70 19.05 4.78      
01536324K 4 MAGNESIL UNCASED 0.137 4.99 - - 12.70 19.05 4.78      
0153D324K 4 MAGNESIL UNCASED 0.146 8.08 - - 20.62 30.86 3.18      
01543192K 2 MAGNESIL ENCAPSULD 0.171 3.99 - - 9.53 15.88 6.35      
01501762K 2 MAGNESIL NONMETALLIC 0.171 4.99 0.916 0.157 12.70 19.05 6.35 10.95 20.80 8.23
01521762K 2 MAGNESIL GVB ALUM 0.171 4.99 0.916 0.157 12.70 19.05 6.35      
01541762K 2 MAGNESIL ENCAPSULD 0.171 4.99 0.916 0.157 12.70 19.05 6.35      
01500332K 2 MAGNESIL NON-METALLIC 0.171 5.98 1.534 0.263 15.88 22.23 6.35 14.12 23.98 8.23
01530332K 2 MAGNESIL UNCASED 0.171 5.98 1.534 0.263 15.88 22.23 6.35      
01540332K 2 MAGNESIL ENCAPSULD 0.171 5.98 1.534 0.263 15.88 22.23 6.35      
0154C212K 2 SILICON ENCAPSULATED 0.172 5.23 - - 13.46 19.84 6.35      
01521154K 4 MAGNESIL GVB. ALUM. 0.181 9.97 - - 28.58 34.93 6.35      
01549694K 4 SILICON ENCAP 0.182 5.99 - - 14.30 23.83 4.24      
01500334K 4 MAGNESIL NON-METALLIC 0.182 5.98 1.534 0.263 15.88 22.23 6.35 14.12 23.98 8.23
01520334K 4 MAGNESIL GVB.ALUM 0.182 5.98 1.534 0.263 15.88 22.23 6.35      
01530334K 4 MAGNESIL UNCASED 0.182 5.98 1.534 0.263 15.88 22.23 6.35      
01540334K 4 MAGNESIL ENCAPSULD  0.182 5.98 1.534 0.263 15.88 22.23 6.35      
01500614K 4 MAGNESIL NONMETALIC 0.182 6.98 2.273 0.39 19.05 25.40 6.35 17.04 27.41 8.48
01500044K 4 MAGNESIL NONMETALIC 0.182 8.97 4.238 0.724 25.40 31.75 6.35 23.39 33.76 8.48
0154B582K 2 MAGNESIL ENCAPSULD 0.193 4.49 - - 9.53 19.05 4.78      
01547422K 2 MAGNESIL ENCAPSULD 0.193 5.48 - - 12.70 22.23 4.78      
01500762K 2 MAGNESIL ALUMINUM 0.193 6.48 1.478 0.284 15.88 25.40 4.78 13.87 27.41 6.91
01540762K 4 MAGNESIL ENCAPSULD 0.193 6.48 1.478 0.284 15.88 25.40 4.78      
01500764K 4 MAGNESIL NONMETALC 0.205 6.48 1.478 0.284 15.88 25.40 4.78 13.87 27.41 6.91
01530764K 4 MAGNESIL UNCASED 0.205 6.48 1.478 0.284 15.88 25.40 4.78      
01540764K 4 MAGNESIL ENCAPSULD 0.205 6.48 1.478 0.284 15.88 25.40 4.78      
01521064K 4 MAGNESIL GVB. ALUM. 0.205 7.48 2.273 0.441 19.05 28.58 4.78      
01541064K 4 MAGNESIL ENCAPSULD 0.205 7.48 2.273 0.441 19.05 28.58 4.78      
01543924K 4 MAGNESIL ENCAPSULD 0.205 10.47 - - 28.58 38.10 4.78      
01549912K 2 MAGNESIL ENCAPSULD 0.257 5.49 - - 14.30 20.65 9.53      
01500072K 2 MAGNESIL NONMETALC 0.257 6.48 1.478 0.38 15.88 25.40 6.35 13.87 27.41 8.48
01530842K 2 MAGNESIL UNCASED 0.257 7.48 2.273 0.582 19.05 28.58 6.35      
01542852K 2 MAGNESIL ENCAPSULATED 0.257 8.47 - - 22.23 31.75 6.35      
01500292K 2 MAGNESIL NONMETALIC 0.257 9.47 4.438 1.09 25.40 34.93 6.35 22.89 37.44 8.99
01540292K 2 MAGNESIL ENCAPSULATED 0.257 9.47 4.438 1.09 25.40 34.93 6.35      
01520182K 2 MAGNESIL GVB.ALUM 0.257 14.46 - - 41.28 50.80 6.35      
0153D354K 4 MAGNESIL UNCASED 0.264 9.71 - - 21.72 40.16 3.18      
01543664K 4 MAGNESIL ENCAPSULD 0.271 8.97 - - 22.23 34.93 4.75      
01500074K 4 MAGNESIL NONMETALC 0.272 6.48 1.478 0.38 15.88 25.40 6.35 13.87 27.41 8.48
01530074K 4 MAGNESIL UNCASED 0.272 6.48 1.478 0.38 15.88 25.40 6.35      
01540074K 4 MAGNESIL ENCAPSULD  0.272 6.48 1.478 0.38 15.88 25.40 6.35      
01546714K 4 MAGNESIL ENCAPSULD 0.272 5.98 - - 15.88 22.23 9.53      
01540844K 4 MAGNESIL ENCAPSULD 0.272 7.48 2.273 0.582 19.05 28.58 6.35      
01532854K 4 MAGNESIL UNCASED 0.272 8.47 - - 22.23 31.75 6.35      
01542854K 4 MAGNESIL ENCAPSULD  0.272 8.47 - - 22.23 31.75 6.35      
01500294K 4 MAGNESIL NONMETALLIC 0.272 9.47 4.438 1.09 25.40 34.93 6.35 22.89 37.44 8.99
01520294K 4 SILICON ALUM GVB 0.272 9.47 4.438 1.09 25.40 34.93 6.35      
01540294K 4 MAGNESIL ENCAPSULD  0.272 9.47 4.438 1.09 25.40 34.93 6.35      
01500184K 4 MAGNESIL NONMETALC 0.272 14.46 - - 41.28 50.80 6.35      
01520184K 4 MAGNESIL GVB.ALUM 0.272 14.46 - - 41.28 50.80 6.35      
01533182K 2 MAGNESIL UNCASED 0.343 7.98 - - 19.05 31.75 6.35      
01543182K 2 MAGNESIL ENCAPSULD 0.343 7.98 - - 19.05 31.75 6.35      
01503912K 2 MAGNESIL NONMETALC 0.343 8.97 4.435 1.52 25.40 31.75 12.70 23.01 34.14 15.21
01522202K 2 MAGNESIL GVB.ALUM 0.343 10.97 - - 28.58 41.28 6.35      
01544302K 2 MAGNESIL ENCAPSULATED 0.343 17.95 - - 50.80 63.50 6.35      
01500324K 4 MAGNESIL NONMETALIC 0.363 9.97 4.238 1.45 25.40 38.10 6.35 22.89 40.61 8.99
01541674K 4 MAGNESIL ENCAPSULD 0.364 6.98 - - 15.88 28.58 6.35      
01540942K 2 MAGNESIL ENCAPSULATED 0.386 6.48 1.534 0.592 15.88 25.40 9.53      
01540342K 2 MAGNESIL ENCAPSULD 0.386 7.48 2.273 0.876 19.05 28.58 9.53      
01541812K 2 MAGNESIL ENCAPSULD 0.386 8.47 3.16 1.22 22.23 31.75 9.53      
01545042K 2 MAGNESIL ENCAPSULD 0.386 10.47 5.478 2.12 28.58 38.10 9.53      
01543152K 2 MAGNESIL ENCAPSULD 0.386 12.46 - - 34.93 44.45 9.53      
0154D572K 2 MAGNESIL ENCAPSULD 0.394 4.99 - - 12.70 19.05 14.61      
01500944K 4 MAGNESIL NONMETALC 0.408 6.48 1.534 0.592 15.88 25.40 9.53 13.87 27.41 11.66
01540944K 4 MAGNESIL ENCAPSULD  0.408 6.48 1.534 0.592 15.88 25.40 9.53      
01540344K 4 MAGNESIL ENCAPSULD 0.408 7.48 2.273 0.876 19.05 28.58 9.53      
01541814K 4 MAGNESIL ENCAPSULD 0.408 8.47 3.16 1.22 22.23 31.75 9.53      
01545044K 4 MAGNESIL ENCAPSULD 0.408 10.47 5.478 2.12 28.58 38.10 9.53      
01541394K 4 MAGNESIL ENCAPSULD 0.482 13.96 - - 38.10 50.80 9.53      
01546402K 2 MAGNESIL ENCAPSULD 0.514 6.48 - - 15.88 25.40 12.70      
01540992K 2 MAGNESIL ENCAPSULD 0.514 7.48 - - 19.05 28.58 12.70      
01500262K 2 MAGNESIL NONMETALC 0.514 9.97 4.238 2.18 25.40 38.10 9.53 22.89 40.61 12.17
01501334K 4 MAGNESIL NONMETALC 0.545 7.18 1.676 0.861 16.51 29.21 9.53 14.50 31.22 11.66
01541334K 4 MAGNESIL ENCAPSULD 0.545 7.18 1.676 0.861 16.51 29.21 9.53      
01501884K 4 MAGNESIL NONMETALC 0.545 7.98 2.238 1.15 19.05 31.75 9.53 17.04 33.76 11.66
01531884K 4 MAGNESIL UNCASED 0.545 7.98 2.238 1.15 19.05 31.75 9.53      
01541884K 4 MAGNESIL ENCAPSULD 0.545 7.98 2.238 1.15 19.05 31.75 9.53      
01523834K 4 MAGNESIL GVB ALUMINUM 0.545 8.97 3.16 1.63 22.23 34.93 9.53      
01500264K 4 MAGNESIL NONMETALC  0.545 9.97 4.238 2.18 25.40 38.10 9.53 22.89 40.61 12.17
01530264K 4 MAGNESIL UNCASED 0.545 9.97 4.238 2.18 25.40 38.10 9.53      
01540984K 4 MAGNESIL ENCAPSULD 0.545 11.96 - - 31.75 44.45 9.53      
01543524K 4 MAGNESIL ENCAPSULD 0.549 9.47 - - 25.40 34.93 12.70      
01548372K 2 MAGNESIL ENCAPSULD 0.685 7.18 - - 16.51 29.21 12.70      
01520382K 2 MAGNESIL GVB ALUMINUM 0.689 9.97 4.238 2.91 25.40 38.10 12.70      
01530382K 2 MAGNESIL UNCASED 0.689 9.97 4.238 2.91 25.40 38.10 12.70      
01540382K 2 MAGNESIL ENCAPSULD 0.689 9.97 4.238 2.91 25.40 38.10 12.70      
01540352K 2 MAGNESIL ENCAPSULD 0.689 11.96 6.815 4.67 31.75 44.45 12.70      
01500552K 2 MAGNESIL NON-METALLIC 0.689 13.96 9.924 6.81 38.10 50.80 12.70 35.59 53.31 15.34
01520384K 4 MANESIL GVB ALUMINUM 0.726 9.97 4.238 2.91 25.40 38.10 12.70      
01540384K 4 MAGNESIL ENCAPSULD  0.726 9.97 4.238 2.91 25.40 38.10 12.70      
01540914K 4 MAGNESIL ENCAPSULD 0.726 10.97 - - 28.58 41.28 12.70      
01500354K 4 MAGNESIL NONMETALC 0.726 11.96 6.815 4.67 31.75 44.45 12.70 29.18 47.02 15.42
01540354K 4 MAGNESIL ENCAPSULD  0.726 11.96 6.815 4.67 31.75 44.45 12.70      
0154A144K 4 MAGNESIL ENCAPSULD 0.726 18.94 - - 53.98 66.68 12.70      
01545142K 2 MAGNESIL ENCAPSULD 0.771 8.97 - - 19.05 38.10 9.53      
01534252K 2 MAGNESIL UNCASED 0.771 12.96 6.815 5.26 31.75 50.80 9.53      
01540662K 2 MAGNESIL ENCAPSULD 0.771 18.94 - - 50.80 69.85 9.53      
01545144K 4 MAGNESIL ENCAPSULD 0.817 8.97 - - 19.05 38.10 9.53      
01504254K 4 MAGNESIL NONMETALLIC 0.817 12.96 6.815 5.26 31.75 50.80 9.53 28.80 53.75 12.50
01534254K 4 MAGNESIL UNCASED 0.817 12.96 6.815 5.26 31.75 50.80 9.53      
0154D192K 2 MAGNESIL ENCAPSULD 0.864 5.66 - - 12.70 23.37 19.05      
01547852K 2 MAGNESIL ENCAPSULD  1.028 6.98 - - 15.88 28.58 19.05      
01541692K 2 MAGNESIL ENCAPSULD 1.028 12.96 - - 31.75 50.80 12.70      
01542954K 4 MAGNESIL ENCAPSULD 1.285 10.97 - - 25.40 44.45 15.88      
01549624K 4 MAGNESIL ENCAPSULD  1.362 14.96 - - 31.75 63.50 9.53      
01540012K 2 MAGNESIL ENCAPSULD 1.371 15.95 9.64 13.2 38.10 63.50 12.70      
01541032K 2 MAGNESIL ENCAPSULD 1.371 19.94 17.894 24.5 50.80 76.20 12.70      
01505554K 4 MAGNESIL NONMETALLIC 1.452 13.96 6.699 9.19 31.75 57.15 12.70 28.42 60.48 15.93
01500014K 4 MAGNESIL NON-METALLIC 1.452 15.95 9.64 13.2 38.10 63.50 12.70 34.77 66.83 15.93
01540014K 4 MAGNESIL ENCAPSULD 1.452 15.95 9.64 13.2 38.10 63.50 12.70      
01542844K 4 MAGNESIL ENCAPSULD 1.453 11.96 - - 25.40 50.80 12.70      
01507834K 4 MAGNESIL NON-METALLIC 1.817 19.94 - - 50.80 76.20 15.88      
01543084K 4 MAGNESIL ENCAPSULD 2.179 25.92 - - 69.85 95.25 19.05