1J50 Foil Transformer Iron Core High Magnetic Permeability 0.05mm
Thick
OhmAlloy-1J50 (Soft magnetic alloy)
(Common Name: Ni50, E11a, 50H, Hy-Ra49, PB)
Ohmalloy-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.
Ohmalloy-1J85 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 |
| OhmAlloy-1J85 | Wire | D= 0.1~8mm |
| OhmAlloy-1J85 | Strip | W= 8~390mm | T= 0.3mm |
| OhmAlloy-1J85 | Foil | W= 10~100mm | T= 0.01~0.1 |
| OhmAlloy-1J85 | Bar | Dia= 8~100mm | L= 50~1000 |
