The main soft magnetic material performance comparison

Maximum permeability

μm

Initial permeability μi

Coercivity Hc (A/m)

Loss Ps w/Kg

Curie temperature

Density

Resistivity

Saturation magnetization Bs

（T）

Cold pressed silicon steel

>10000

1000

>8

P1/50>0.3

730

7.65

50

2.0

Soft ferrite

10000

2000

20

P0.2/20K<20

300~600

4.8

>106

<0.5

Iron-based amorphous

>10000

>1000

<3

P1/50=0.07

>400

7.18

140

>1.5

Iron-based nanocrystals

>200000

>80000

<1.5

P0.5/20K<25

>560

7.25

90

>1.2

Permalloy

>200000

>10000

>0.4

P0.2/20K<13

>440

8~8.8

55

0.5~1.5

Cobalt based amorphous

>200000

>80000

<2

P0.2/20K<5

>320

8.0

140

0.5~0.8