Soft magnetic alloy having a high magnetic permeability and low coercive force in a weak magnetic field for a class of alloys. Such alloys are widely used in radio-electronic industry, precision instruments, remote control and automatic control system, mainly used for energy conversion and information processing in two areas.
1.Chemical composition(%)
|
Grade
|
C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Cr
|
Mo
|
Fe
|
|
1J50
|
0.01
|
0.17
|
0.35
|
0.006
|
0.005
|
49.8
|
0.02
|
|
Bal
|
|
1J79
|
0.01
|
0.38
|
0.85
|
0.005
|
0.003
|
79.50
|
0.02
|
3.95
|
Bal
|
|
1J85
|
0.01
|
0.18
|
0.35
|
0.005
|
0.003
|
80.3
|
0.02
|
4.95
|
Bal
|
2. Physical properties
|
Grade
|
Density(g/cm3)
|
Thermal expansion coefficient (10-6/℃)
|
Curie point(℃)
|
Volume resistivity(μΩ.cm)
|
Thermal conductivity(W/m.℃)
|
|
1J50
|
8.2
|
8.2(20~100℃)
|
498
|
45(20℃)
|
16.5
|
|
1J79
|
8.6
|
11.0(20~100℃)
|
450
|
55(20℃)
|
13.4
|
|
1J85
|
8.75
|
12.4(20~100℃)
|
450
|
56(20℃)
|
18.7
|
3. Magnetic properties
|
Grade
|
Initial magnetic permeability（mH/m）
|
Maximum magnetic permeability(mH/m)
|
Coercive force(A/m)
|
Saturation magnetic flux density(T)
|
|
1J50
|
》8.0
|
》50
|
《10
|
1.5
|
|
1J79
|
》40
|
》310
|
《2.0
|
0.73
|
|
1J85
|
》60
|
》280
|
《2.0
|
0.7
|
|
|
|
|
|
|
OHMALLOY can make the alloy wire in dia from 0.5mm to 8mm. Rod dia from 8mm to 200mm.
