0.23mm CRGO Silicon Steel Low Iron Loss 0.9W/kg Oriented Electrical Steel

0.23mm CRGO (Cold Rolled Grain-Oriented) silicon steel with a low iron loss of 0.9W/kg(at 1.5 Tesla and 50 Hz ) represents a premium, high-efficiency electrical steel. Its specialized grain structure minimizes magnetic resistance and energy waste, making it the industry-standard choice for energy-efficient transformers, power grids, and renewable energy inverters. 

 

GNEE Electric is a specialized manufacturer and global supplier of high-performance electrical steels with over a decade of metallurgical expertise. Our core mission is to help overseas transformer producers, reactor fabricators, and lamination stampers reduce operational energy losses

 

 

Whether you are building distribution transformers, power transformers, or specialized magnetic cores, we support your project with custom slitting, reliable delivery, full mill certificates, and responsive technical service.

 

 

The term "CRGO" (cold‑rolled grain‑oriented) refers to a precise crystallographic structure where silicon‑iron grains are aligned along the rolling direction. This orientation creates an easy magnetization path, drastically reducing hysteresis loss.

 

Our 0.23mm CRGO Silicon Steel Low Iron Loss 0.9W/kg Oriented Electrical Steel takes this principle further by combining three advantages:

1. Ultra‑thin gauge (0.23 mm) – Minimizes eddy current loss because the laminations are thinner, restricting circulating currents within each sheet.
2. High silicon content (approx. 3.0–3.3%) – Increases electrical resistivity, further suppressing eddy currents.
3. 0.9 W/kg core loss guarantee – At 1.7 T / 50 Hz, this value is among the lowest available for conventional CRGO grades, directly competing with Hi‑B materials.

For transformer manufacturers, moving to this grade means achieving efficiency levels required for premium classes (IE3, IE4, and even some amorphous‑competitive designs) without costly redesigns.

 

 

Lower total owning cost – A 500 kVA distribution transformer using this steel can save several thousand kWh annually compared to a 1.2 W/kg grade.

Reduced core size / weight – With higher magnetic induction (B800 ≥ 1.88 T), you can design smaller cores for the same power rating.

Lower operating temperature – Less heat generation extends insulation life and transformer service life.

 

 

Element	Typical Value	Role / Impact
Silicon (Si)	3.0 – 3.3%	Primary alloying element: increases electrical resistivity → reduces eddy current loss; also promotes Goss texture formation
Carbon (C)	≤ 0.06%	Low carbon prevents magnetic aging and core loss deterioration
Manganese (Mn)	0.08 – 0.20%	Combines with sulfur to form MnS – a critical grain growth inhibitor
Phosphorus (P)	≤ 0.015%	Kept low to preserve ductility and magnetic properties
Sulfur (S)	0.003 – 0.035%	Part of the inhibitor system; controlled to very low levels in final product
Aluminum (Al)	0.01 – 0.05%	Forms AlN precipitates for secondary recrystallization
Nitrogen (N)	0.003 – 0.012%	Works with Al to control grain growth
Iron (Fe)	Balance	High‑purity matrix with optimal crystallographic alignment

 

Why silicon matters

Each 1% increase in silicon raises electrical resistivity by roughly 0.4 μΩ·cm. Our 3.0–3.3% silicon content gives a volume resistivity of ~48 μΩ·cm, which is the ideal balance between loss reduction and mechanical workability (higher silicon would make the steel too brittle for slitting/punching). 

 

 

Parameter	Guaranteed Value	Test Condition
Core Loss (W/kg)	≤ 0.90 W/kg	1.70 T, 50 Hz
Magnetic Induction B800 (T)	≥ 1.88 T	800 A/m magnetizing field
Magnetic Induction B1000 (T)	≥ 1.91 T	1000 A/m
Stacking Factor	≥ 96.5%	Applied pressure 1.0 MPa
Aging Factor (225°C × 200h)	≤ 0.75	Stable long-term performance

 

 

Standard	Grade	Core Loss @1.7T/50Hz	Induction B800
GNEE Premium	0.23mm CRGO (0.9W/kg)	≤ 0.90 W/kg	≥ 1.88 T
JIS C2553	23R090	≤ 0.90 W/kg	≥ 1.88 T
IEC 60404‑8‑7	23P090	≤ 0.90 W/kg	≥ 1.88 T
ASTM A876	M3 (23P090)	≤ 0.98 W/kg	≥ 1.87 T

 

 

Because this gauge and grade of material reduce core losses while running cooler, it is heavily favored in:

• Power & Distribution Transformers: Essential for lowering "no-load" losses and meeting strict international energy efficiency standards.
• High-Frequency Inductive Coils: Minimizes high-frequency heating in specialized electronic applications.
• Renewable Energy Systems: Used in transformers for wind and solar inverters to maximize output and reduce wasted energy. 

 

Choosing the right oriented electrical steel directly impacts your transformer's efficiency rating, reliability, and market competitiveness. GNEE's 0.23mm CRGO Silicon Steel Low Iron Loss 0.9W/kg Oriented Electrical Steel delivers exactly that – guaranteed low core loss of 0.9 W/kg, high magnetic induction, and consistent mechanical properties that streamline your core production. By specifying this CRGO silicon steel, you are not just buying material; you are investing in long‑term energy savings and a stronger product reputation.

 

Ready to test the performance of 0.23mm CRGO Silicon Steel 0.9W/kg in your next transformer batch?

👉 Fill in the quick inquiry form below (or email us directly) with your required width, coating type, and quantity. Our team will reply within 8 hours with a competitive quotation, free slitting recommendation, and material certificate. Let's build more efficient transformers – together.

 

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What is CRGO silicon steel?

CRGO (Cold-Rolled Grain-Oriented steel) is a silicon steel specially processed so that the grains are oriented in one direction, optimizing magnetic properties along that axis.

 

Why is CRGO core used in transformers?

CRGO steel has high electrical resistivity and high magnetic properties in the rolling direction. It reduces core losses in transformers and increases corrosion resistance.

 

What are the key properties of CrGO steel?

Important physical properties of Electrical steels (CRGO) include resistivity, saturation induction, magneto-crystalline anisotropy, magnetostriction, and Curie temperature. Resistivity, which is quite low in iron, increases markedly with the addition of silicon.

 

Can CRGO steel be used in electric motors?

- Electric Motors: CRGO steel is also used in the manufacturing of electric motors. The material's magnetic properties play a vital role in enhancing the motor's efficiency and performance.

 

What are the different grades of CRGO steel?

CRGO (Cold Rolled Grain Oriented) steel is used in transformer cores, and it comes in grades like M2, M3, M4, M5, and M6. These grades refer to the thickness and the material's magnetic performance.