Nanocrystalline Cores for High Frequency Transformers, Inverter Welding Machine
Sep 22, 2025
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Nanocrystalline Core Product Description
Nanocrystalline Transformer Core has high permeability, high saturation induction, low coercivity, low core loss. Suitable for high frequency transformer of inverter welding equipment, solar inverter, and high power transformer in Kw range.
O – Toroidal type nanocrystalline core
Ω – Toroidal nanocrystalline core with two legs
Π – Toroidal nanocrystalline core with two legs
H – Toroidal nanocrystalline core with four legs
Nanocrystalline Core Feature
- Material: Fe-based Nanocrystalline core
- Saturation flux density induction: 1.25T
- Permeability @ 10KHz: > 20000
- Curie temperature(℃): 560
- Stacking factor: 0.78
- Saturation magnetostriction(*10^-6): <2
- Resistivity (μΩ.cm): 90
- Ribbon thickness: 25μm
- Core shapes: Toroidal core
High saturation flux density – you can reduce volume of transformers vs tranditional Ferrite
High permeability – improve efficiency,lower exciting power and reduce copper loss
Low coercivity and Low core loss – low temperature rise
Excellent thermal stability – working temperature of -40 – 130℃
Nanocrystalline Core Applications
>> Inverter welding machines
>> Electrolytic plating power supplies
>> High Power Laser power supplies
>> Communication, high-speed railway power supplies
>> High frequency heating systems
>> High frequency and high power switched mode power supply
Nanocrystalline Core Parameters
| Properties | Nanophous cores | Ferrite cores |
| Saturation Flux density(T) | 1.25 | 0.5 |
| Remanence (T) (20KHz) | <0.3 | 0.2 |
| Core loss (20KHz/0.2T) (W/Kg) | <3.4 | 7.5 |
| Core loss (20KHz/0.5T) (W/Kg) | <30 | can not use |
| Core loss (50KHz/0.3T) (W/Kg) | <40 | can not use |
| Permeability (20KHz) | >20,000 | 2000 |
| Coercivity (A/m) | <2.0 | 6 |
| Saturation magnetostriction(*10^-6) | <2 | 4 |
| Resistivity (μΩ.cm) | 90 | 10^6 |
| Curie temperature(℃) | 560 | <200 |
| Stacking factor | >0.75 | n/a |
| Core dimensions | Case dimensions | Effictive cross section |
Mean path length |
Weight | Power @ 20KHz |
Case type* | ||||
| od | id | h | OD | ID | H | AFe | lFe | mFe | P | |
| mm | mm | mm | mm | mm | mm | cm2 | cm | g | KW | |
| 50 | 32 | 20 | 53.8 | 28.5 | 24 | 1.40 | 12.9 | 131 | 0.5-1 | O |
| 64 | 40 | 20 | 68.2 | 37 | 23.5 | 1.87 | 16.3 | 222 | 1-3 | O |
| 80 | 50 | 25 | 83.5 | 47.2 | 28.8 | 2.93 | 20.4 | 433 | 3-5 | O |
| 80 | 50 | 25 | 83.5 | 47.2 | 28.8 | 2.93 | 20.4 | 433 | 3-5 | Ω |
| 100 | 60 | 20 | 106 | 55 | 25 | 3.12 | 25.1 | 568 | 5-7 | O |
| 100 | 60 | 20 | 106 | 55 | 25 | 3.12 | 25.1 | 568 | 5-7 | Ω |
| 120 | 70 | 20 | 125 | 65 | 25 | 3.90 | 29.8 | 843 | 7-10 | O |
| 120 | 70 | 20 | 125 | 65 | 25 | 3.90 | 29.8 | 843 | 7-10 | Π |
| 120 | 70 | 30 | 125 | 65 | 36 | 5.85 | 2.98 | 1265 | 10-15 | O |
| 120 | 70 | 30 | 125 | 65 | 36 | 5.85 | 2.98 | 1265 | 10-15 | Π |
| 130 | 80 | 40 | 136 | 75 | 46 | 7.80 | 33.0 | 1864 | 15-20 | O |
| 130 | 80 | 40 | 136 | 75 | 46 | 7.80 | 33.0 | 1864 | 15-20 | H |
| 130 | 80 | 50 | 136 | 75 | 56 | 9.75 | 33.0 | 2331 | 20-25 | O |
| 130 | 80 | 50 | 136 | 75 | 56 | 9.75 | 33.0 | 2331 | 20-25 | H |
Power @ 20KHz only for reference, actual output power will depend on your design.
Other specifications are available according to customer's requirements.
GNEE Featured Products
Gnee provides premium iron cores to the world. Our cores can be selected in a wide range of materials, shapes, applications, manufacturing techniques, etc., to meet customers' diverse demands. Explore our wide product range now~
Manufacturing Process
1. Raw Material Sourcing
2. Slitting
3. Punching
4. Laminating
5. Core Forming
6. testing
GNEE EC
Founded in 2008 and located in Anyang in China, Gnee Electric is a high-tech enterprise specializing in researching and manufacturing iron core products.
The company currently occupies over 20,000 square meters and employs more than 200 people, including over 80 professionals. After more than 18 years of development, we have built our own magnetic material production base and independently develope, produce, and sell various kinds of iron cores. The common types include silicon steel cores, motor cores, transformer cores, toroidal iron cores, special-shaped cores, custom cores, and others. Our cores are widely applied in different sectors including transformers, motors, mutual inductors, voltage stabilizers, welding machines, magnetic amplifiers, and instrumentation, providing diverse core solutions to global customers.
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Types of Products
18k+
Happy Clients
Why Choose GNEE EC?
GNEE EC was founded in 2008, which is a National High-tech Enterprise & Famous Brand Enterprise in China, developing into a professional manufacturer and supplier of high-quality iron cores.
18+
Over 18 years of success in the iron core industry;
National High-tech Enterprise & Famous Brand Enterprises in China;
200+
Over 200 employees;
The R&D team has more than 80 experienced engineers and the production team has more than 100 skilled staffs;
35+
Annual turnover up to 35 million dollor per year;
Owns many sets of highly automatic winding, annealing, and assembling machines;
1,000+
Over 1000 customers in domestic and overseas markets;
core Products are exported to more than 70 countries in the world;
Gnee Iron Core Factory Overview
Meet Our Sales Manager
"The Core of the Iron Core, the Power of Leadership" - See Our Great Decision-Makers Deeply Engaged in the Magnetic Materials Industry.
Edison Zhang
CEO
Kelly Zhang
General Manager
Alex Cao
Sales Manager
Industries Served
Automobile Industry
New Energy
Transformer Applications
Our Mission
Strive To Create world-class Iron core brand
With 18 Years of industry experience, we focus on the research, development, and manufacturing of high-quality iron cores for electricity, industrial control, new energy, and automotive markets