Amorphous Core High Permeability Co-based Amorphous Toroidal Core
Sep 25, 2025
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Co-based Amorphous Toroidal Core Product Description
The Cobalt-based amorphous soft magnetic material with almost zero magnetostriction,high permeability and low core loss, is suitable for such applications as magnetic snubber cores to suppress surge current and magnetic shielding sheet.
We are able to manufacture Co-based amorphous cores in various shapes, including Toroidal core, rectangular core, cut core and customized design cores.
Amorphous Core Feature
- High permeability
- Low coercivity
- Very low core loss
- Almost zero magnetostriction
- Insensitive to mechanical stress
Co-based Amorphous ring Core Application
- Magnetic amplifier, peak suppressor
- Anti-DC meter / Watt-hour meter / Automotive parts
- High frequency Switch Mode Power Supplies
- Magnetic shield / Sensor / Frequency converter
- Common mode choke, differential mode choke
Co-based Amorphous Core specifications
|
Core Dimensions |
Finished core dimensions (mm) |
Effective cross section |
Mean effective pathlength |
Core weight |
Total flux |
Total flux |
Effective winding Area |
Mean length of copper coil |
Heat transfer Resistance |
||
|
|
O.D. |
I.D. |
H |
Afe cm2 |
Ife cm |
mFe g |
Φ ss |
Φ ss, |
ACucm2 |
Icu cm |
Rth K/W |
|
10x8x4 |
11.6 |
6.5 |
5.1 |
0.032 |
2.83 |
0.7 |
3.7 |
3.2 |
0.082 |
2.01 |
56 |
|
10.1x6.9x4.5 |
11.6 |
5.5 |
6.0 |
0.058 |
2.67 |
1.2 |
6.7 |
5.8 |
0.059 |
2.24 |
57 |
|
12.8x9.5x3.2 |
14.7 |
7.9 |
4.8 |
0.042 |
3.50 |
1.1 |
4.8 |
4.2 |
0.121 |
2.23 |
44 |
|
12x8x4.5 |
14.0 |
6.6 |
6.2 |
0.070 |
3.14 |
1.7 |
8.1 |
7.0 |
0.085 |
2.45 |
47 |
|
12.5x10x5 |
14.0 |
8.5 |
6.8 |
0.050 |
3.53 |
1.4 |
5.8 |
5.0 |
0.140 |
2.56 |
42 |
|
14x8x4.5 |
15.5 |
6.5 |
5.7 |
0.108 |
3.46 |
2.9 |
12.4 |
10.8 |
0.082 |
2.53 |
44 |
|
15x10x4.5 |
17.1 |
7.9 |
6.5 |
0.090 |
3.93 |
2.7 |
10.4 |
9.0 |
0.121 |
2.84 |
37 |
|
10.7x8.2x4.5 |
14.0 |
6.6 |
6.2 |
0.045 |
2.97 |
1 |
5.2 |
4.5 |
0.085 |
2.45 |
47 |
|
16x10x6 |
17.9 |
8.2 |
8.2 |
0.144 |
4.08 |
4.5 |
16.6 |
14.4 |
0.131 |
3.20 |
34 |
|
17.5x12.5x6 |
19.1 |
10.9 |
8.1 |
0.120 |
4.71 |
4.4 |
13.8 |
12.0 |
0.231 |
3.30 |
30 |
|
19x15x5 |
21.2 |
13.0 |
7.3 |
0.080 |
5.34 |
3.3 |
9.2 |
8.0 |
0.329 |
3.17 |
27 |
|
19x15x10 |
21.2 |
13.0 |
12.3 |
0.160 |
5.34 |
6.6 |
18.4 |
16.0 |
0.329 |
4.25 |
24 |
|
20x12.5x8 |
22.6 |
10.3 |
10.2 |
0.240 |
5.10 |
9.4 |
27.6 |
24.0 |
0.206 |
4.05 |
26 |
|
25x20x10 |
27.7 |
17.1 |
12.9 |
0.200 |
7.10 |
10.9 |
23.0 |
20.0 |
0.568 |
4.98 |
18 |
|
25x16x10 |
27.9 |
13.6 |
12.5 |
0.360 |
6.44 |
17.9 |
41.4 |
36.0 |
0.360 |
5.00 |
19 |
|
30x20x10 |
32.8 |
17.6 |
12.5 |
0.400 |
7.85 |
24.2 |
46.0 |
40.0 |
0.602 |
5.40 |
16 |
|
40x25x10 |
43.1 |
22.4 |
18.5 |
0.900 |
10.20 |
70.8 |
103.5 |
90.0 |
0.980 |
7.53 |
11 |
|
40x32x15 |
43.3 |
28.8 |
0.48 |
0.480 |
11.30 |
41.8 |
55.2 |
48.0 |
1.610 |
7.37 |
10 |
Cores with other specifications can be provided concerning to customer demand.
MAGNETIC PROPERTIES
|
Item |
Reference value |
|
Saturation flux density (25℃) |
0.58 T |
|
Saturation magnetostrictive coefficient(λs) |
<0.2x10-6 |
|
Bipolar flux density (25℃) |
1.15 T |
|
Bipolar flux density (90℃) |
1 T |
|
Rectangular ratio Br/Bs |
≥96% |
|
Curie Temperature, (Tc) |
240℃ |
|
Continuous operation temperature |
90℃ |
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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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
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CEO
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General Manager
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Sales Manager
Industries Served
Automobile Industry
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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