0.23mm 1.1 W/kg Cold Rolled Grain Oriented Silicon Steel
May 22, 2026
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When it comes to 0.23mm 1.1 W/kg grain oriented silicon steel, we offer overseas clients much more than just a commodity product. We provide fully customizable CRGO silicon steel coils and sheets backed by a 3000-ton standing inventory from premium Chinese mills such as Baowu Steel and Shougang. Whether you require standard-grade 23Q110 or high-induction grades like B23P090, B23P095, B23P100, and B23RK085, GNEE delivers products that meet strict IEC, ASTM, and GB standards.
Our 24/7 online service team, rigorous quality control processes, and fast global shipping ensure that your production never faces unnecessary delays. More importantly, our engineers provide technical guidance to help you select the precise grade and thickness for your transformer core, generator, or motor application - optimizing your energy efficiency while minimizing operational costs.
What Is Grain Oriented Silicon Steel?
Grain oriented silicon steel, also known as CRGO (Cold Rolled Grain Oriented) silicon steel or transformer steel, is a specialized low-carbon silicon-iron alloy meticulously engineered for superior magnetic performance. The term "grain oriented" refers to the deliberate alignment of crystal grains during manufacturing - the crystals are oriented so that their easy magnetization direction aligns with the rolling direction, while the (110) plane aligns with the sheet surface. This unique crystallographic texture enables exceptional magnetic flux flow along the rolling direction while dramatically reducing energy losses in perpendicular directions.
In-depth Analysis of Core Parameters
- Thickness (0.23mm): It belongs to thin-gauge grain-oriented silicon steel. Thinner thickness can effectively restrain eddy current generation, greatly cutting eddy current loss caused by alternating magnetic field.
- Iron loss (1.1 W/kg): A key indicator measuring material energy efficiency. The 1.1 W/kg value is tested under 50Hz frequency and magnetic flux density of 1.7 Tesla, representing core loss per unit weight.
Within the 0.23mm thickness range, 1.1 W/kg iron loss corresponds to standard conventional grain-oriented steel (CGO) or entry-level high magnetic flux density grain-oriented steel (Hi-B).
Chemical Composition - The Silicon Advantage
Silicon content is the hidden hero of grain oriented electrical steel. Our 0.23mm 1.1 W/kg grain oriented silicon steel maintains a precisely controlled silicon content in the range of 2.9% to 3.3% - the ideal composition that balances magnetic properties, mechanical strength, and manufacturability.
Why is silicon so critical?
As silicon content increases, electrical resistivity rises, which dramatically reduces eddy current losses. However, exceeding 3.5% silicon makes cold rolling increasingly difficult and renders the material brittle. Our 3% silicon formulation represents the optimal balance - maximizing electrical resistivity and minimizing core loss while preserving excellent mechanical workability for punching, slitting, and lamination processes.
Chemical composition of 0.23mm 1.1 W/kg cold rolled grain oriented silicon steel:
| Parameter | Value / Range | Unit / Notes |
|---|---|---|
| CHEMICAL COMPOSITION | ||
| Silicon (Si) Content | 2.9% – 3.3% | Primary alloying element; increases electrical resistivity; optimal range for magnetic performance and cold rolling feasibility |
| Carbon (C) Content | 0.03% – 0.08% | Low carbon ensures grain orientation development and minimizes aging degradation |
| Manganese (Mn) Content | 0.05% – 0.30% | Forms MnS inhibitors for grain growth control |
| Sulfur (S) Content | 0.015% – 0.030% | Controlled for MnS precipitation |
| Aluminum (Al) Content | 0.02% – 0.03% | Forms AlN inhibitors in Hi-B grades |
| Phosphorus (P) Content | ≤ 0.015% | Minimized to maintain ductility |
| Copper (Cu) Content | 0.05% – 0.20% | Optional addition in high-grade steels to enhance inhibitor strength |
| Iron (Fe) Content | Balance | Base metal |
Common Grade Comparison in the Industry
Matching grades for 0.23mm thickness silicon steel with iron loss no more than 1.1 W/kg vary by country and mainstream steel manufacturers, detailed as follows:
Standard & Mill Corresponding Grades and Definition
- Chinese National Standard (GB)23Q110 / 23QG11023 refers to 0.23mm thickness; Q/QG stands for grain-oriented / high magnetic flux density grain-oriented; 110 means maximum iron loss of 1.10 W/kg.
- Baosteel & Wuhan Iron and Steel StandardB23R110 / 23WH110Letters are exclusive factory prefixes. The number 110 indicates iron loss of 1.1 W/kg under 1.7 Tesla magnetic flux density.
- International Standard (AISI/ASTM)23M110General designation for transformer core steel complying with American standards.
Technical Specifications Table - Key Grades Available
| Grade | Nominal Thickness (mm) | Theoretical Density (kg/dm³) | Core Loss P1.7/50 Max (W/kg) |
|---|---|---|---|
| 23Q110 | 0.23 | 7.65 | 1.10 |
| 23Q120 | 0.23 | 7.65 | 1.20 |
| 23QG085 | 0.23 | 7.65 | 0.85 |
| 23QG090 | 0.23 | 7.65 | 0.90 |
| 23QG095 | 0.23 | 7.65 | 0.95 |
| 23QG100 | 0.23 | 7.65 | 1.00 |
| 23P075 | 0.23 | 7.65 | 0.75 |
| 23P080 | 0.23 | 7.65 | 0.80 |
| 23P090 | 0.23 | 7.65 | 0.90 |
| 23P095 | 0.23 | 7.65 | 0.95 |
| 23P100 | 0.23 | 7.65 | 1.00 |
| 23RK085 | 0.23 | 7.65 | 0.85 |
Technical Features & Core Advantages
Extremely low hysteresis and eddy current loss0.23mm sheet thickness combined with directional grain arrangement effectively reduces energy dissipation under alternating magnetic field, meeting strict low no-load loss requirements of modern power grids.
High magnetic permeabilityCold rolled grain-oriented process delivers superior permeability along the rolling easy magnetization axis, generating stronger magnetic field with identical current.
Protective insulating coatingSurface is coated with inorganic silicate or phosphate insulation coating such as C5, C6 type. It features excellent interlaminar insulation resistance, strong adhesion and good stamping resistance.
Typical Application Scenarios
- Core lamination and wound core of energy-saving distribution and power transformers
- Small and medium-sized reactors and instrument transformers with strict hysteresis loss requirements
- Stator core of large power generators to guarantee internal magnetic flux efficiency
Ready to upgrade your transformer core material?
Reach out to our team today with your required grade, width, and quantity. We will provide you with a competitive quote, detailed test certificates, and samples upon request.
Contact GNEE now to discuss your 0.23mm 1.1 W/kg grain oriented silicon steel requirements!
What is cold rolled grain-oriented silicon steel?
CRGO is the acronym for Cold Rolled Grain Oriented Steel. A material that is mainly used in the core of a transformer. When used it gives the transformers and other electrical devices a strong magnetic core. CRGO steel was first introduced to make the core of transformers in the 1940s.
What is grain-oriented electrical steel used for?
Grain-oriented electrical steel is a crucial material in the production of energy-efficient transformers and large, high-performance generators. In the form of laminated, wound, or punched sheets, it is the essential core material of distribution transformers, power transformers, and small transformers.
What is cold rolled grain oriented electrical steel sheets in coil?
Cold-rolled grain-oriented electrical steel coils are manufactured from high-quality electrical steel and are quite durable in long-term usage. They also come with insulation coatings that protect them from corrosion and wear.