The U.S. Department of Energy is working to replace the steel in the stator core of motors with an electrical steel. This new steel is an iron alloy with 6.5 percent silicon, which is twice as much as the alloy of today has. This new alloy reduces energy loss within the motor, making it more energy efficient. By replacing the steel with the new "electrical steel", motors will be smaller, more powerful, lighter, and more energy efficient. The only downside is that it is very brittle due to the silicon. If you drop it the metal will crack. Engineers are working on the steel in order to make it more durable and cheaper to use.
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