Grain-Oriented Electrical Steel (CRGO)
Yanshan Steel's Grain Oriented Electrical Steels (GOES) are designed for demanding energy applications. High magnetic anisotropy and precisely aligned Goss crystal texture (110)[001] ensure effective directional magnetic flux, ultra-low watt loss (P1.7/50 ≤ 0.85 W/kg), and superior energy efficiency for distribution and grid-level power transformers.
High Magnetic Flux Density
B800 magnetic induction up to 1.92 Tesla in HiB series for ultra-compact transformer designs.
Thinnest Commercial Grade
0.05mm ultra-thin grain-oriented foil (UTGO) engineered for 400Hz+ high-frequency power electronics.
Zero Aging Guarantee
≤0.3% core loss increase over 10 years verified through rigorous elevated-temperature aging tests.
Global Standards Compliance
Fully certified according to IEC 60404-8-7, ASTM A876, JIS C 2553, and GB/T 2521 standards.
Yanshan Steel Grain Oriented Electrical Steel Manufacturer & Supplier
Yanshan Steel's Grain Oriented Electrical Steels (GOES) are differentiated by an advanced hydrogen bell annealing process operating at 1200°C under ultra-low oxygen partial pressure (<10 ppm). This high-temperature thermal treatment purges residual carbon and nitrogen interstitials, reducing stress aging by 18% to maximize operational life and magnetic stability.
The finished steel is coated with a UL 1446-recognized C6 insulating film providing inter-laminar dielectric withstand capability up to 800 V/μm. Combined with domain refinement via laser scribing, Yanshan Steel GOES guarantees the lowest total owning cost (TOC) for power generation utilities and transformer OEMs globally.
Technical Specifications Of Yanshan Steel's Grain Oriented Electrical Steel
Comparative matrix across standard Cold-Rolled (CRGO), High-Efficiency (HiB), and Ultra-Thin (UTGO) series.
| Parameter | Cold-Rolled (CRGO) | High-Efficiency (HiB) | Ultra-Thin (UTGO) |
|---|---|---|---|
| Nominal Thickness | 0.18 – 0.35 mm (±0.01 mm) | 0.23 – 0.30 mm (±0.005 mm) | 0.05 – 0.10 mm (±0.002 mm) |
| Magnetic Induction (B800) | B800 ≥ 1.85 Tesla | B800 ≥ 1.92 Tesla | B800 ≥ 1.78 Tesla |
| Core Loss Guarantee (P1.7/50) | ≤ 1.10 W/kg | ≤ 0.85 W/kg | ≤ 0.75 W/kg (P1.0/400) |
| Mechanical Yield Strength | 320 – 400 MPa | 350 – 420 MPa | 280 – 350 MPa |
| Surface Insulation Treatment | C5 Inorganic Phosphate Coating | Laser-scribed + C6 Coating | SiO₂ Nano-Insulation Layer |
| Governing Standards | IEC 60404-8-7, ASTM A876 | JIS C 2553, GB/T 2521 | IEC 60404-8-9 |
| Manufacturing Smelting & Annealing | Cold-rolled + Box Annealing | Cold-rolled + High-Temp H₂ Anneal | Cold-rolled + Ultra-thin Pass |
CRGO Grade Designations & Core Loss Matrix
Tested according to IEC 60404-8-7 and ASTM A876 standards at 50Hz and 60Hz magnetic field frequencies.
| Grade Designation | Nominal Gauge | Max Core Loss P1.7/50 | Max Core Loss P1.7/60 | Min Magnetic Induction (B800) | Typical Application |
|---|---|---|---|---|---|
| 23Q110 / 23ZH110 | 0.23 mm | ≤ 1.10 W/kg | ≤ 1.45 W/kg | ≥ 1.88 T | Ultra-High Voltage (UHV) grid step-up transformers |
| 23Q120 / 23ZH120 | 0.23 mm | ≤ 1.20 W/kg | ≤ 1.58 W/kg | ≥ 1.86 T | Large power generation substation units |
| 27Q120 / 27ZH120 | 0.27 mm | ≤ 1.20 W/kg | ≤ 1.58 W/kg | ≥ 1.88 T | Distribution transformers and high-efficiency reactors |
| 27Q130 / 27ZH130 | 0.27 mm | ≤ 1.30 W/kg | ≤ 1.70 W/kg | ≥ 1.86 T | Standard commercial power distribution substations |
| 30Q120 / 30ZH120 | 0.30 mm | ≤ 1.20 W/kg | ≤ 1.58 W/kg | ≥ 1.88 T | Instrument transformers & audio inductors |
| 30Q130 / 30ZH130 | 0.30 mm | ≤ 1.30 W/kg | ≤ 1.70 W/kg | ≥ 1.85 T | Industrial oil-immersed & dry-type transformer cores |
Our Precision Processing Services
Equipped with in-house non-magnetic carbide slitting lines, laser cutters, and progressive die stamping presses.
| Processing Service | Technical Mill Capability | Guaranteed Tolerances |
|---|---|---|
| Laser Domain Scribing & Cutting | 0.05 mm kerf width (1.5 kW high-frequency fiber laser) | ±0.03 mm edge straightness |
| High-Voltage Insulation Coating | C6 (dielectric strength 800 V/μm), T4 thermal spray | 2 – 5 μm uniform coating thickness |
| High-Speed Stamping & Slitting | ≤15 μm burr at 500 SPM (carbide progressive dies) | ±0.05 mm hole positioning accuracy |
| Stress Relief Annealing (SRA) | 1200°C pure H₂ atmosphere bell furnaces (≤10 ppm O₂) | Magnetic property consistency ±3% |
Key Advantages & Applications of Yanshan Steel GOES
Targeted product fits engineered for global energy transmission, traction, and medical sectors.
| Industry Sector | Specific Industrial Application | Recommended Yanshan Steel Grade Fit |
|---|---|---|
| Power Transmission & Grid | 500kV – 1100kV Ultra-High Voltage transformer cores | HiB Series (P1.7/50 ≤ 0.85 W/kg) |
| Renewable Energy Systems | Solar PV inverter reactors & high-frequency chokes | UTGO Series (0.10 mm thickness) |
| Rail Transport & Traction | High-speed locomotive traction transformers | CRGO Series (0.30 mm, 450 MPa YS) |
| Medical Imaging & Shielding | MRI superconducting magnet shields & diagnostic scanners | UTGO + SiO₂ Insulation Coating |
Our Delivery Standards and Supply Scope
VCI anti-corrosion film + desiccants + heavy steel edge guards conforming to ISO 22087. Eye-to-sky or eye-to-wall orientation.
• Standard orders: 15–25 days (Shanghai/Singapore hubs)
• Urgent air freight: 7 days with complete DDP terms
• In-stock materials: 1 metric ton
• Custom laser-scribed grades: 5 metric tons
Over 500+ tons of prime CRGO and HiB standing inventory maintained in Houston, Rotterdam, and Osaka logistics hubs.
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