Grain Oriented Electrical Steel China
Grain Oriented Electrical Steel is a premium transformer core material designed to deliver low core loss and high magnetic permeability in the rolling direction. Lammotor is a trusted manufacturer in China, we manufacture high quality GOES laminations for power and distribution transformers.
We can provide laser cutting, wire EDM, progressive stamping and in-die bonding processes. We provide different GOES materials grades and thicknesses to meet your specific design and application requirements.
Key Properties of Grain Oriented Electrical Steel
Grain Oriented Electrical Steel (GOES) offers several key advantages that make it the ideal material for transformer laminations and high-efficiency electrical equipment:
- Low Core Loss: Cold Rolled Grain Oriented steel significantly reduces energy loss in the rolling direction—typically 45–50% lower than non-oriented steel—helping improve transformer efficiency and reduce operating costs.
- High Magnetic Permeability: Magnetic permeability is much higher along the rolling direction, allowing stronger magnetic flux with less energy input and enabling more compact transformer designs.
- High Magnetic Flux Density: Cold Rolled Grain Oriented steel can achieve high flux density (e.g., ≥1.88T for high-grade materials), improving energy conversion efficiency and overall performance.
- Low Magnetostriction: Reduced magnetostriction minimizes vibration and noise during operation, enhancing reliability and stability.
Grain Oriented Electrical Steel Laminations We Manufactured
We manufacture a wide range of Grain Oriented Silicon Steel laminations for transformer and drone motor applications. Our products include transformer core laminations such as E, I, EI, and UI types. In addition, we produce GOES motor stator teeth for drone motor designs.
Grain Oriented Electrical Steel transformer EI lamination
EI transformer laminations are supplied separately, allowing flexible stacking and easy assembly for various transformer designs
Grain Oriented Electrical Steel transformer laminations
Made from 0.23mm GOES, two grain orientations, improving magnetic performance and reducing core loss
Oriented electrical steel transformer core
Built with 0.35mm GOES using in-die bonding, ensuring strong structure, high stacking factor, and stable performance
Grain Oriented Electrical Steel stator teeth
Tooth and yoke are separately assembled, ideal for high-performance drone motors with optimized magnetic flux control
Common GOES Steel Grades and Thickness
We can provide a wide range of GOES steel grades and grain oriented electrical steel thickness options to meet different laminations performance requirements. We use CRGO grades supplied by leading mills such as Baosteel, WISCO, and Shougang.
Baosteel
- 0.23mm: B23G110, 23Q110
- 0.27mm: B27G120, 27Q120
- 0.3mm: B30G120, 30Q120
- 0.35mm: B35G145, 35Q145
Shougang Steel
- 0.18mm: 18SQG075, 18SQG080, 18SQG085, 18SQG090
- 0.20mm: 20SQG075, 20SQG080, 20SQG085, 20SQG090, 20SQG095
- 0.23mm: 23SQG080, 23SQG085, 23SQG090, 23SQG095, 23SQG100
- 0.27mm: 27SQG090, 27SQG095, 27SQG100, 27SQG110
OUR SERVICES
Lammotor Advantage in GOES Lamination Manufacturing
With our commitment to quality and customer satisfaction, we are confident that we can provide you with the best GOES laminations in China. There are several reasons why you should choose us as your Oriented Electrical Steel material China Manufacturer.
Experience in GOES Stamping and Bonding
We have strong experience in stamping thin GOES materials (0.23–0.30 mm) and offer multiple stacking solutions, including bonding and interlocking, to ensure low core loss and high structural stability.
Stable GOES Material Supply (0.23, 0.27, 0.30 mm)
We maintain stable sourcing from leading steel mills, ensuring consistent quality and reliable lead times.
Strict Quality Control (Core Loss, Burr, Insulation)
We control burr height, insulation coating, and core loss to meet strict transformer performance requirements.
Quality Control for Grain Oriented Electrical Steel Material
At Lammotor, we have a strict quality control for every batch of Oriented Electrical Steel (GOES) laminations to ensure consistent performance and reliability:
Incoming Material Inspection: Verify GOES steel grades, thickness, and coating condition before production
Core Loss Testing: Ensure low core loss performance meets lamination efficiency requirements
Burr Height Control: Strictly control burrs to prevent inter-laminar short circuits and reduce eddy current loss
Insulation Testing: Evaluate coating resistance to ensure proper electrical insulation between laminations
FAQ – Cold Rolled Grain Oriented steel
Grain Oriented Electrical Steel (GOES) has its crystal structure aligned in the rolling direction, offering high magnetic permeability and low core loss in one direction.
Non-Grain Oriented Electrical Steel (NGOES) has uniform magnetic properties in all directions, making it suitable for rotating machines like motors. GOES is mainly used in transformers, while NGOES is used in motors.
The typical thickness of GOES ranges from 0.18 mm to 0.35 mm. Common options include 0.23 mm, 0.27 mm, and 0.30 mm, depending on efficiency and cost requirements. Thinner materials generally offer lower core loss but higher cost.
GOES typically uses insulation coatings such as C5 or C6 coatings. These coatings provide electrical insulation between laminations, reduce eddy current losses, and improve corrosion resistance and stacking performance.
GOES is used in transformers because it provides low core loss and high magnetic permeability along the rolling direction.
This improves energy efficiency, reduces heat generation, and ensures stable magnetic performance, which is essential for transformer core operation.
Laser scribed GOES is a high-performance material where laser treatment is used to refine magnetic domains.
This process reduces core loss and improves efficiency, making it ideal for high-efficiency and energy-saving transformers.
Core loss can be reduced by selecting thinner GOES material.
Using high-grade or laser scribed steel also helps improve performance.
Optimizing lamination design, such as step-lap cores, further reduces losses.
Good insulation coating is essential to limit eddy currents.
Burr height must be controlled to avoid inter-laminar short circuits.
Get High-Quality GOES Laminations for Your Transformer and Motor Project
We are a reliable Grain Oriented Electrical Steel (GOES) lamination supplier in China. We provide GOES laminations for transformer core applications, including EI, UI, and custom designs and drone motor stator teeth. With stable GOES material supply, in-die bonding technology, and strict quality control, we help you achieve lower core loss and higher efficiency. Contact us today to discuss your project and get a customized solution for your GOES lamination needs.