Ohmalloy-1J46 is a nickel–iron magnetic alloy, with about 46% nickel and 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-1J46 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 | 45~46.5 | Fe | Bal. | Mn | 0.6~1.0 | 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 | % |
| - | - | 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/℃ | - |
| Saturation magnetostriction coefficient λθ/ 10-6 | 25,0 |
| Curie point Tc/ ℃ | 400 |
The magnetic properties of alloys with high permeability in weak
fields
|
| 1J46 | 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 |
| ≥ | ≤ |
| 0.02~0.04 mm | 1.6 | 22.5 | 32.0 |
1.5
|
| 0.1~0.19 mm | 2.5 | 31.3 | 20.0 |
| 0.2~0.34 mm | 3.1 | 37.5 | 16.0 |
| 0.35~2.50 mm | 3.5 | 45.0 | 12.0 |
| Bar | |
| 8-100 mm | 2.5 | 31.3 | 16.0 |
| Mode of heat treatment |
| 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 |
FAQ
1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you
want.
If we do not have, for spool wire, we can produce 1 spool, about
2-3kg. For coil wire, 25kg.
2. How can you pay for small sample amount?
We have account, wire transfer for sample amount also ok.
3. Customer do not have express account. How will we arrange the
delivery for sample order?
Just need to provide your address information, we will check the
express cost, you can arrange the express cost together with sample
value.
4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery
and total amount. Let's talk more in details after getting your
detailed requirements.
5. Do you provide free samples?
If you want several meters and we have stock of your size, we can
provide, customer need to bear the International express cost.
6.How do you guarantee the quality?
We have QC who are responsible for tracking and monitoring whole
production process, and we are willing to accept customer‘s
testing.
7. What's our working time?
We will give you reply through email/phone Online chat tool within
24 hours. No matter working day or holidays.
