At times it is by coincidence that an innovative product is developed, which is the story of a steel strip with an insulation oxide layer created during production testing at voestalpine Stahl. In collaboration with strategic customers, voestalpine Stahl invested intensive research that resulted in a non-paint coating technique for final-annealed electrical steel strip. Within a short period of time, isovac® blue was launched as an innovative an high-quality product to the market.

The physical properties of the new insulating layer are comparable to those of paint coatings on full-finished electrical steel strip. Reduced eddy current losses, the elimination of an insulating paint coating and the resulting cost efficiency are the most significant advantages of isovac® blue.

Main Benefits of isovac® blue
Our customers enjoy the conventional advantages of isovac®, such as low silicon content, excellent electro-magnetic properties and optimum processing characteristics, in addition to the additional benefits of isovac® blue:
- Elimination of the paint coating layer, resulting in reduced cost
- Reduction of eddy current losses
- Elimination of final annealing at the customer
- Substitution of semi-finished steel grades
- Full compliance with the most recent environmental guidelines

isovac® blue Applications
isovac® blue has already been implemented in punched and stacked parts for electrical engines, generators and transformers. The overwhelming customer response has confirmed our position: isovac® blue is the innovative solution in electrical steel strip. Enjoy the benefits of isovac® blue.