Magnetic Materials
Silicon-Iron Cobalt-Iron Nickel-Iron Amorphous Metals(Metglas) Ferrites
The purpose of this page is to give the viewer some idea of the relative magnetic properties of a variety of magnetic materials that can be used in pulsed power, high voltage, and power conditioning applications. The data here has been taken from a number of sources including manufacturers data sheets, etc. Because actual conditions of measurement may vary, the reader is advised to contact the manufacturer for detailed information once a specific application has been defined. Several manufacturers may be found on the Links page.
Ness Engineering is NOT a representative or dealer of any of these materials.
Name / Composition |
Initial Permeability
|
Maximum Permeability
|
Coercivity
Hc (Oe)
|
Retentivity
Br (G)
|
Bmax
(G)
|
Resistivity
(mW
-cm) |
Curie Temp
(deg C)
|
Iron, pure
(lab conditions) |
25,000
|
350,000
|
0.05
|
12,000
|
14,000
|
9.7
|
|
Silicon-Iron |
Magnesil
3 Si |
–
|
–
|
0.4-0.6
|
12,750-
15,300
|
15,000-
18,000
|
50
|
750
|
Silicon-Iron
4 Si |
400
|
7,000
|
0.5
|
12,000
|
20,000
|
60
|
690
|
Hypersil, Trancor3X, Silectron
3.5 Si |
1,500
|
35,000
|
0.1-0.3
|
13,700
|
20,000
|
50
|
750
|
Sendust
9.5 Si, 5.5 Al |
30,000
|
120,000
|
0.05
|
5,000
|
10,000
|
80
|
–
|
Cobalt-Iron |
Hyperco
35 Co, 0.5 Cr |
650
|
10,000
|
1
|
13,000
|
24,000
|
28
|
970
|
Supermendur
49 Co, 2 V |
–
|
–
|
0.15-
0.35
|
17,100-
19,800
|
19,000-
22,000
|
26
|
940
|
Permendur 2V
49 Co, 2 V |
800
|
4,500
|
2
|
14,000
|
24,000
|
25
|
980
|
Nickel-Iron |
Deltamax, Orthonol
50 Ni |
400-
1,700
|
40,000-
100,000
|
0.2-0.4
|
13,000-
15,000
|
15,500-
16,000
|
40-50
|
450-500
|
Permalloy 65
65-68 Ni |
1,500
|
250,000-
600,000
|
0.03
|
13,000
|
13,000
|
20
|
600
|
Permalloy 78
78 Ni, 0.6 Mn |
9,000
|
100,000
|
0.05
|
6,000
|
10,700
|
16
|
580
|
Mo-Permalloy4-79
79 Ni, 4 Mo |
20,000
|
75,000
|
0.05
|
5,500
|
8,000
|
55
|
–
|
Supermalloy
79 Ni, 5 Mo |
55,000-
150,000
|
500,000-
1,000,000
|
0.002-
0.05
|
–
|
6,800-
7,800
|
65
|
400
|
Mumetal
77 Ni, 5 Cu, 2 Cr |
20,000
|
100,000
|
0.05
|
6,000
|
8,000
|
60
|
400
|
Allied Signal Amorphous Metals |
Metglas 2605S3A |
|
35,000
annealed
20,000
as cast
|
~0.02
|
|
14,100
|
138
|
358
|
Metglas 2605SA1 |
|
600,000 annealed
45,000
as cast
|
~0.09
|
|
15,900 annealed
15,700
as cast
|
130
|
392
|
Metglas 2605SC |
|
300,000 annealed
40,000
as cast
|
~0.15
|
|
16,100
|
135
|
370
|
Metglas 2605CO |
|
400,000 annealed
120,000
as cast
|
~0.04
|
|
18,000
|
123
|
415
|
Metglas 2705M |
|
600,000 annealed
290,000
as cast
|
~0.013
|
|
7,700
|
136
|
365
|
Metglas 2714A |
|
1,000,000 annealed
80,000
as cast
|
~0.02
|
|
5,700
|
142
|
225
|
Ceramic Magnetics Inc. |
Mn-Zn Ferrites |
MN30 |
4000
|
7000
|
0.13
|
1300
|
4600
|
400
|
175
|
MN60LL |
6500
|
10,500
|
0.08
|
800
|
4500
|
500
|
185
|
MN60 |
6500
|
10,500
|
0.08
|
800
|
4500
|
200
|
185
|
MN67 |
1250
|
8800
|
0.21
|
2900
|
5200
|
150
|
280
|
MN80 |
2400
|
6000
|
0.17
|
1500
|
5000
|
200
|
230
|
MN100 |
10,000
|
15,500
|
0.07
|
700
|
4500
|
150
|
170
|
MN8CX |
2900
|
3500
|
0.18
|
700
|
4700
|
1000
|
185
|
MC25 |
9500
|
12,500
|
0.06
|
900
|
4100
|
35
|
125
|
Ni-Zn Ferrites |
CN20 |
800
|
4500
|
0.4
|
2700
|
3800
|
106
|
170
|
CMD5005 |
1600
|
4500
|
0.17
|
1500
|
3200
|
109
|
130
|
C2025 |
175
|
1100
|
1.5*
|
2600*
|
3500*
|
106
|
270
|
C2050 |
100
|
390
|
3.0*
|
2400*
|
3400*
|
107
|
340
|
C2075 |
35
|
150
|
7.0*
|
1800*
|
2700*
|
108
|
420
|
N40 |
15
|
50
|
7.5
|
700
|
1600
|
1010
|
510
|
CMD10 |
550
|
1600
|
0.8
|
3000
|
4100
|
107
|
230
|
Send consulting inquiries, comments, and suggestions to richard.ness@nessengr.com