{{ variable.name }}
B20HS070 is a grain-oriented silicon steel designed for high-efficiency distribution transformers operating in extremely cold climates. With an ultra-low iron loss of ≤0.65 W/kg and a magnetic permeability retention of ≥95% at -40°C, this material ensures reliable performance in freezing conditions, reducing no-load losses and supporting energy efficiency standards like EU ecodesign.
| Parameter | Value |
|---|---|
| Thickness | 0.20 mm |
| Iron Loss (P1.7/50) | ≤0.65 W/kg |
| Silicon Content | 3.0% - 3.2% |
| Permeability Retention at -40°C | ≥95% |
Available in grades within the 20-65 range; specific models can be customized based on transformer core design requirements.
Mainly iron (Fe) with silicon (Si) 3.0%-3.2%, plus Al and Mn. Strictly controlled impurities (C, S, N) for high magnetic permeability (Hi-B) steel.
Ideal for distribution transformers in cold regions, including three-dimensional rolled iron core and outdoor units, supporting smart grid monitoring.
Canadian High-Efficiency and Low-Noise Distribution Transformer Project: B20HS070 used for Class 1 energy-efficient rolled iron core transformers, operating in -40°C to -20°C with freeze-thaw cycles and coastal salt fog, maintaining stable excitation.
It retains ≥95% magnetic permeability at -40°C, ensuring stable transformer operation.
Iron loss is ≤0.65 W/kg, making it suitable for high-efficiency transformers.
Yes, it is suitable for such designs, improving energy efficiency and reducing noise.
Distribution transformers in cold regions, including outdoor and smart grid units.
Yes, grades and processing can be tailored to specific core requirements.
MOQ: 25T
Delivery: EXW/FOB/CIF
Payment: 30/70
Contact: sales-01@hlslind.com

