1K107 Nanocrystalline C Shape Iron Core for Transformers
Oct 27, 2025
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The nanocrystalline C-shape iron core is a C-shaped soft magnetic component made from iron-based nanocrystalline alloy ribbons (typical composition: Fe₇₃.₅Cu₁Nb₃Si₁₃.₅B₉) through winding, cutting, low-temperature annealing, and insulation treatment. It requires a magnetic yoke to form a closed magnetic circuit, and is suitable for medium-to-high frequency (50kHz-200kHz) scenarios. As a key component for transformers and inductors, it is especially ideal for equipment that needs post-operation maintenance.
nanocrystalline C-shape iron core Key Features
Low loss at medium-to-high frequencies: Iron loss is 18-35W/kg at 100kHz, only 1/5-1/8 that of silicon steel C-shape cores, resulting in low equipment temperature rise.
: Open structure allows coils to be slipped on later; faulty coils can be replaced individually without scrapping the entire assembly.
: Operable at -50℃-150℃, with magnetic performance attenuation <=3% over 10 years. It resists vibration and has excellent insulation (insulation resistance >=100MΩ).
: Replacing magnetic yokes of different types enables adjustment of magnetic resistance and inductance, adapting to various power requirements.
1. Same Structure (C-shape) with Different Materials
| Nanocrystalline C-shape Core | Silicon Steel C-shape Core (30Q130) | Ferrite C-shape Core (Mn-Zn) | |
|---|---|---|---|
| 50kHz-200kHz | 50Hz-1kHz | 100kHz-1MHz | |
| Iron Loss (P₁/100k) | 18-35W/kg | 120-180W/kg | 10-20W/kg (better at ultra-high frequencies) |
| 1.2-1.5T | 1.8-2.0T | 0.3-0.5T | |
| 2.8-3.5 | 1.0 | 1.5-2.2 | |
| Medium-to-high frequency, high-efficiency equipment | Power frequency, high-power equipment | Ultra-high frequency, low-power equipment |
2. Same Material (Nanocrystalline) with Different Structures
| Nanocrystalline C-shape Core | Nanocrystalline E-shape Core | ||
|---|---|---|---|
| Closed (E+I splicing) | |||
| 5%-8% (with yoke) | <=3% | <=5% | |
| Medium-high power (5-50kW) | Small-medium power (1-20kW) | Medium power (3-30kW) |
| ± | ± | ± | ± | ||||||
| 9 | 0.5 | 10 | 32.8 | 15 | 0.5 | 28 | 1 | 50.8 | 1.25 |
| 10 | 0.5 | 11 | 33 | 20 | 0.5 | 31 | 1 | 53 | 2 |
| 11 | 0.5 | 13 | 30 | 20 | 0.5 | 35 | 1 | 52 | 2 |
| 11 | 0.5 | 13 | 40 | 20 | 0.5 | 35 | 1 | 62 | 2 |
| 11 | 0.5 | 13 | 40 | 25 | 0.5 | 35 | 1 | 62 | 2 |
| 11 | 0.8 | 13 | 50 | 25 | 0.5 | 35 | 1 | 72 | 2 |
| 11 | 0.8 | 13 | 50 | 30 | 0.5 | 35 | 1 | 72 | 2 |
| 13 | 0.8 | 15 | 56 | 25 | 0.5 | 41 | 1 | 82 | 2 |
| 13 | 0.8 | 15 | 56 | 30 | 0.5 | 41 | 1 | 82 | 2 |
| 13 | 0.8 | 15 | 56 | 35 | 0.5 | 41 | 1 | 82 | 2 |
| 16 | 0.8 | 20 | 70 | 25 | 0.5 | 52 | 1 | 102 | 3 |
| 16 | 1 | 20 | 70 | 30 | 0.5 | 52 | 1 | 102 | 3 |
| 16 | 1 | 20 | 70 | 40 | 0.5 | 52 | 1 | 102 | 3 |
| 16 | 1 | 20 | 70 | 45 | 1 | 52 | 1 | 102 | 3 |
| 19 | 1 | 25 | 83 | 35 | 1 | 63 | 1 | 121 | 3 |
| 19 | 1 | 25 | 83 | 40 | 1 | 63 | 1 | 121 | 3 |
| 19 | 1 | 25 | 83 | 50 | 1 | 63 | 1 | 121 | 3 |
| 19 | 1 | 25 | 90 | 60 | 1 | 63 | 1 | 128 | 3 |
| 22 | 1 | 35 | 85 | 50 | 1 | 79 | 1 | 129 | 4 |
| 22 | 1 | 35 | 85 | 65 | 1 | 79 | 1 | 129 | 4 |
| 25 | 1 | 40 | 85 | 55 | 1 | 90 | 1 | 135 | 4 |
| 25 | 1 | 40 | 85 | 70 | 1 | 90 | 1 | 135 | 4 |
| 25 | 1 | 40 | 85 | 85 | 1.5 | 90 | 1 | 135 | 4 |
| 30 | 1 | 40 | 85 | 85 | 1.5 | 100 | 1 | 155 | 4 |
| 33 | 1 | 40 | 105 | 85 | 1.5 | 106 | 1 | 171 | 5 |
| Note: Additional sizes can be customized to meet specific customer requirements. | |||||||||
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~
1. Raw Material Sourcing
2. Slitting
3. Punching
4. Laminating
5. Core Forming
6. testing
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.
30+
18k+
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;
1,000+
Over 1000 customers in domestic and overseas markets;
core Products are exported to more than 70 countries in the world;
"The Core of the Iron Core, the Power of Leadership" - See Our Great Decision-Makers Deeply Engaged in the Magnetic Materials Industry.
