About Silicon Steel Transformer Core

Oct 17, 2025

Leave a message

Silicon Steel Transformer Core

 

A transformer core is a set of multiple laminated sheets arranged together to form the shape of a box and a doughnut in the case of a toroidal transformer.

These laminated sheets are made of silicon steel material, up to 4.5 %, as they are considered strong enough to tolerate the magnetic flux produced in the transformer.

About Silicon Steel Transformer Core

 

The Silicon steel transformer core is the main component of a transformer and is responsible for its functionality and efficiency. It holds a variety of properties which are listed below:

 

1. High resistivity

2. High permeability

3. Magnetostriction

4. Excellent conductivity

5. Light weightiness

6. Small size

7. Save energy

 

Due to the use of silicon steel alloy in core formation, it becomes highly magnetic, resulting in higher efficiency in industrial plants, electronic devices, and machinery.

 

A transform core increases the voltage for sizable industrial machinery that requires a higher and continuous energy supply for a more extended period.

 

Similarly, it decreases the voltage for small devices like doorbells, mobile chargers, and FM radios.

 

 

How Does A Silicon Steel Transformer Core Manage The Risks Of Potential Losses?

 

We all know that the transformer manages the incoming voltage supply according to the required outgoing voltage levels, but the real question is how all this process takes place. How does the Silicon steel core reduce the risk of potential losses in this process?

 

So, the transformer core focuses on reducing the two significant energy losses; eddy current and hysteresis. So, let's deal with them one by one.

 

1. Managing the Eddy Current Losses:

 

Eddy current refers to the circulating current produced due to flux passing through the magnetic field produced by the transformer's core.

 

And to overcome this potential energy loss, 4 % to 5% of silica is added to the primary alloy, resulting in a decrease in steel's conducting power. However, adding an increased quantity of silica can reverse the process instead of managing the eddy current.

 

As a solution, an additional steel laminated sheet is added to reduce the risk of high eddy current loss.

 

2. Managing the Hysteresis Losses:

 

Hysteresis losses occur due to the magnetization saturation in the transformers' core. It is also a cause behind the heating of the transformers while working.

 

The energy loss ratio due to Hysteresis loss is directly proportional to the surface area of the hysteresis loop. The greater the area, the more energy loss happens.

 

In order to overcome this potential energy loss, choosing a material with less Hysteresis surface is the ultimate option. The surface coefficient of silicon steel alloy is around 0.6, which is already less.

 

Therefore, silicon steel alloy already increases resistivity and permeability and is effective against hysteresis loss.

 

 

Role Of Silicon Steel Transformer Core

 

Undoubtedly, highly magnetic and strong permeable silicon steel alloy is enough to make it a priority for transformers cores. However, there is a lot more than this! So, let's look at some advantages of choosing silicon steel alloy for transformer cores.

 

● Silicon and steel together make a perfect combination of ideal features like high electric conductivity and permeability as well as magnetostriction that makes them faultless choices.

 

● As the resistivity, particularly in the iron, was low, it highly increased with the addition of silicon in it, making it a potent combination for managing the magnetic force.

 

● They are a good solution for large-sized transformers. As they shorten the size of transformers, they can be used in small electronic devices like mobile chargers, laptop chargers, electronic toys, doorbells, toasters, microwaves, and so on.

 

● The silicon steel alloy produces less heat as compared with other compatible materials. In this way, it contributes to an eco-friendly environment.

 

● Silicon steel transformer cores effectively against the potential Eddys and Hysteresis energy losses. To reduce energy loss, you don't have to look for materials with reduced loop surfaces.

 

● Both main materials, silicon, and steel, are less expensive than materials with similar characteristics.

 
 

Silicon Steel  Core specification

High Flux Kool Mu Core Iron Power C Core for Electric Transformer

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.

 

 

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

 

Raw Material Sourcing

1. Raw Material Sourcing

Slitting

2. Slitting

Punching

3. Punching

Laminating

4. Laminating

Core Forming

5. Core Forming

testing

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.

GNEE EC

30+

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

Gnee Iron Core Factory
Gnee Iron Core Factory
Gnee Iron Core Factory
Gnee Iron Core Factory
Gnee Iron Core Factory
Gnee Iron Core Factory

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.

CEO

Edison Zhang

CEO

General Manager

Kelly Zhang

General Manager

Sales Manager

Alex Cao

Sales Manager

 

 

Industries Served

 
Automobile Industry

Automobile Industry

New Energy

New Energy

Motor Applications
Motor Applications
Transformer Applications

Transformer Applications

modular-1

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

Send Inquiry