Nanocrystalline Cores for Electrical Applications
Oct 16, 2025
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Nanocrystalline Core
The nanocrystalline cores are made with the help of metallic glass with a mixture of crystalline structures. The main components that are found in nanocrystalline cores are 82% iron, and the remaining percentage of the substance is made with many different alloys and materials such as copper, silicon, niobium, molybdenum, nickel, boron, and carbon.
Hence, this is a mixture of some of the essential components needed in electrical appliances. Besides its marvelous composition, there's loads more that contribute to making nanocrystalline, an ideal core material.
How Are Nanocrystalline Cores Manufactured?
Now that you know the composition of nanocrystalline cores and the basic materials used in making this material, let's have a look at how this is actually made. Following are the steps that are usually involved in making these nanocrystalline cores.
1. The first step is shaping the material into an excellent grain-like structure of about 7 to 25 micrometres. If the grains are not small enough, the proper structure of the nanocrystalline cores won't be formed.
2. Once the grains are made, the material is melted at a very high temperature. About 1300°C of heat is provided to the grains so they get melted quickly, and no grain is left solid behind.
3. After this step, the melted grains are kept on the water-cooled wheel. This wheel allows the grains to cool down and brings the temperature down to 20°C.
4. After the ribbon-like structure of the metal is annealed. This is done with the help of two different types of magnetic fields. One being the transverse and the other being the longitudinal one.
5. This charges the material and creates the perfect magnetic field around it.
6. Now the protective coating is done around the material so that it can stay protected from all the damage before it gets shipped off to the suppliers or used in the electrical appliances.
Why Are Nanocrystalline Cores Superior Choices for Electrical Appliances?
The nanocrystalline core is packed with many excellent properties. All of these properties are distinct to this material. Below is a list of all the advantages that make it a better choice over other material cores in making electrical appliances.
1. High Density:
One of the primary and most prominent benefits of using nanocrystalline cores is that it offers high-density power. The density power of this material is very high compared to other materials, such as ferrite and amorphous cores. Moreover, the nanocrystalline cores have a very low propensity caused by the core's magnetism, which is suitable for producing high frequency.
2. High Permeability:
Another fantastic thing about this core is that they offer excellent permeability. The permeability coincides with the magnetic fields, which are then polarized easily. That said, it can also gradually lower the current flow so that the appliances stay in good quality.
3. High Induction Saturation:
The next prominent feature of these nanocrystalline cores is they have high induction. This helps reduce the core size while keeping the performance optimum.
4. Curie Temperature:
Nanocrystalline cores are also known for their high curie temperature. It is essential that the cores used in the electrical appliances can handle high temperatures. Otherwise, the machine will heat up and can get damaged easily. The nanocrystalline cores can have a high curie temperature of up to 120°C, considered an exceptional level.
5. Heat Stability:
The nanocrystalline cores also are heat stable. This allows them to remain efficient and work perfectly for longer durations. With increased heat resilience, nanocrystalline cores show a minimal core loss.
Nanocrystalline Toroidal Core specification
| Core Build | Window Width | Core Height | Core Width | Core Length | |||||
| a(mm) | ± | b(mm) | c(mm) | d(mm) | ± | e(mm) | ± | f(mm) | ± |
| 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. | |||||||||
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Manufacturing Process
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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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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.
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Over 200 employees;
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