NESS ENGINEERING
TECHNICAL DATA
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



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Ness Engineering, Inc.
P.O. Box 261501
San Diego, CA 92196
(858) 566-2372
(858) 240-2299 FAX

Richard M. Ness and Ness Engineering, Inc.
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