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.

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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isovac® Expect more


Tailored solutions for individual demands

Our innovative non-grain-oriented electrical steel and our pole sheets offer customer-specific solutions to a wide range of demands and areas of application: wind power generation plants, hydraulic power plants, thermal power plants, automotive electric motors, household appliances and industrial appliances, welding transformers, ballasts, small transformers, screens used in medical technologies, magnets for particle accelerators (synchrotrons) and much more.