Electrical steel strips for generators, motors and static machines 

isovac® is the non-grain-oriented electrical steel made by voestalpine, a cold-rolled steel strip made of iron-silicon alloys with special magnetic, mechanical and physical properties.  These properties are crucial to a wide variety of applications, such as transformers, motors and generators. Such properties determine how economically energy resources can be used and ultimately the attractiveness of end products on the market.

isovac® Expect more

Where isovac® is used 

All motors, generators and static machine have one thing in common in that they have a core made of iron that generally consists of stacked laminations.

The primary areas of application are these:

  • Systems dedicated to the generation of power:  Creation of electricity in generators
  • Power transmission and distribution  Transformers 
  • Utilization of electrical energy by consumers:  Motors
isovac® Generatorenbau, Elektroblech und Elektroband

Electrical steel is the heart of the electrical industry

The electrical industry is one of the most versatile sectors in the world. Whether for electric motors, generators or static machines—the requirements could not be more unique. Companies who don't take the path of continuous innovation risk being passed up in the long run. With our comprehensive material know-how and expertise in the market, we engage in development partnerships with leading companies in the electrical industry worldwide. These partnerships make it possible for our customers to contribute substantially to the green electrification of our future.

We submit to you: The future is green

Sustainably informed in the heartbeat of time. voestalpine has always set ambitious sustainability goals, and Stella Sustainable will keep you informed about everything pertaining to our environmental compatibility. Stella reports regularly on climate protection projects as well as measures and initiatives that are put in place to reduce CO2, achieve ecological and social benchmarks, implement forward-looking and environmentally friendly technologies and improve our green logistics and closed cycles in the steel industry. Stella will tell you all about our comprehensive commitment, strong pioneering spirit and irrepressible progressive thinking. Have we piqued your curiosity? 

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Worth knowing: grain-oriented and non-grain-oriented electrical steels

Significant differences appear in the magnetic properties of grain-oriented electrical steels between structures in the direction of rolling (very good characteristics) and structures crosswise to the direction of stock flow (poor characteristics). Processing steps must be selected to achieve favorable properties (direction of rolling).

Differences in the magnetic properties of non-grain-oriented electrical steels can occur, but they are substantially less pronounced. The material is characterized by low directionality (anisotropy) with respect to the magnetic and mechanical properties. The main applications for non-grain oriented electrical steel are motors of all sizes, generators, ballasts and much more.

Non-grain-oriented electrical steels are further differentiated as fully processed or semi-processed. The difference between these two types of electrical steel lies in the final manufacturing step.