1. Chemical composition(%)
|
Grade
|
C
|
Si
|
Mn
|
P
|
S
|
Ni
|
Cr
|
Mo
|
Fe
|
|
1J79
|
0.01
|
0.38
|
0.85
|
0.005
|
0.003
|
79.50
|
0.02
|
3.95
|
Bal
|
2. Physical properties
|
Grade
|
Density(g/cm3)
|
Thermal expansion coefficient (10-6/℃)
|
Curie point(℃)
|
Volume resistivity(μΩ.cm)
|
Thermal conductivity(W/m. ℃)
|
|
1J79
|
8.6
|
11.0(20~100℃)
|
450
|
55(20℃)
|
13.4
|
3. Magnetic properties
|
Grade
|
Initial magnetic permeability(mH/m)
|
Maximum magnetic permeability(mH/m)
|
Coercive force(A/m)
|
Saturation magnetic flux density(T)
|
|
1J79
|
)40
|
)310
|
(2.0
|
0.73
|