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Soft magnetic alloy-1J50
(Common Name: Ni50, E11a, 50H, Hy-Ra49, PB)
1J50 is a nickel–iron magnetic alloy, with about 50% nickel and 48% iron content. It is derived in accordance with permalloy. It has characteristics of high permeability and high saturation magnetic flux density.
Alloy melting in a vacuum medium, cast into ingots, after hot forging blanks made of sheet metal, and then after hot rolling, pickling, surface treatment, cold rolling into finished products.
1J50 Iron-nickel alloy( soft magnetic alloy) mostly in an alternating magnetic field used mainly for high magnetic yoke, sensitive relays, low-loss micro-motor, small power transformers, pulse transformer, transistor switches, magnetic amplifier magnetic modulator, sensitive signal input and output transformers, magnetic heading aviation instrumentation magnetic sensor, magnetic susceptibility measurement instrument components, precision meter movable piece and the stator magnetic shielding and magnetic temperature compensation element.
Normal composition%
Ni
49.0~51.0
Fe
Bal.
Mn
0.3~0.6
Si
0.15~0.3
Mo
-
Cu
≤0.2
C
≤0.03
P
≤0.02
S
≤0.02
Typical Mechanical properties
Yield strength
Tensile Strength
Elongation
Mpa
Mpa
%
685
780
3~35
Typical Physical properties
Density (g/cm3)
8.2
Electrical resistivity at 20℃(Ωmm2/m)
0.45
Coefficient of linear expansion(20℃~200℃)X10-6/℃
9,2
Saturation magnetostriction coefficient λθ/ 10-6
25,0
Curie point Tc/ ℃
500
The magnetic properties of alloys with high permeability in weak fields
1J50
Initial permeability
Maximum permeability
Coercivity
Saturation magnetic induction intensity
Сold-rolled strip/ sheet.
Thickness, mm
μ0.08/ (mH/m)
μm/ (mH/m)
Hc/ (A/m)
BS/ T
≥
≤
0.05 mm
2.5
35
20
1.5
0.1~0.19 mm
3.8
43.8
12
0.2~0.34 mm
4.4
56.3
10.4
0.35~1.0 mm
5.0
65
8.8
1.1~2.5 mm
3.8
44.0
12
Bar
8-100 mm
3.1
25.0
24
Mode of heat treatment 1J79
Annealing media
Vacuum with a residual pressure not higher than 0.1Pa, hydrogen with a dew point of not higher than minus 40 ℃.
The heating temperature and rate
1100~1150℃
Holding time/h
3~6
Cooling rate
With 100 ~ 200 ℃/ h cooled to 600 ℃, Rapid cooling to 300 baked
Style of supply
Alloys Name
Type
Dimension
1J50
Wire
D= 0.1~8mm
1J50
Strip
W= 8~390mm
T= 0.3mm
1J50
Foil
W= 10~100mm
T= 0.01~0.1
1J50
Bar
Dia= 8~100mm
L= 50~1000