Ohmalloy Material Co.,Ltd
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Permalloy Transformer Soft Magnetic Alloy 17*35*80mm Precision alloy 1J50 Plate
Ohmalloy-1J50 iron-nickel alloy (soft magnetic alloy) is mainly used in high magnetic flux, sensitive relay, low loss micro-motor, small power transformer, pulse transformer, transistor switch, magnetic power magnetic modulator, sensitive signal input, and output transformer , Magnetic measurement, air instrument magnetic sensor, magnetic sensitive measuring instrument component, precision instrument removable parts and stator magnetic shielding and magnetic temperature compensation components.
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.
| 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 |
| Yield strength | Tensile Strength | Elongation |
| Mpa | Mpa | % |
| - | - | 3~35 |
| 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.