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High Permeability 0.02mm 1J50 Strip Soft Magnetic Alloy For Small Power Transformers

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China Ohmalloy Material Co.,Ltd certification
China Ohmalloy Material Co.,Ltd certification
I search for Nichrome plate long time, and successfully bought it from Ohmalloy material. OHMALLOY provide real good service in alloy service and can always help me in finding the correct resistance alloy.

—— Mike Harness

OHMALLOY can provie me only 1kg Kovar alloy wire 1.0mm with short time, that is really amazing. Thanks

—— Janey

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—— Chris

Enamelled Constantan 0.08mm, i never expect to get only 2kg of it. But OHMALLOY supply it to me with good quality. God Jesus! Such a reliable supplier from china

—— Aaron

High Permeability 0.02mm 1J50 Strip Soft Magnetic Alloy For Small Power Transformers

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Large Image :  High Permeability 0.02mm 1J50 Strip Soft Magnetic Alloy For Small Power Transformers Get Best Price

Product Details:
Place of Origin: China(Shanghai)
Brand Name: OHMALLOY
Certification: ISO,SGS
Model Number: 1J50
Payment & Shipping Terms:
Minimum Order Quantity: 1meter
Price: negotiable
Packaging Details: in coil
Delivery Time: 5-8 workdays after your received deposit
Supply Ability: 500000 meter per month
Detailed Product Description
Material: 1J50 Thickness: 0.02mm
Color: Primary Color Surface: Bright&Smooth
Supply Type: Foil
High Light:

soft magnetic alloy


super permalloy

Ohmalloy-1J50 is a nickeliron 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-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.


High Permeability 0.02mm 1J50 Strip Soft Magnetic Alloy For Small Power Transformers 0



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












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
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



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.


Contact Details
Ohmalloy Material Co.,Ltd

Contact Person: Mr. Qiu

Tel: +8613795230939

Send your inquiry directly to us