Electrical Steels

Oriented Electrical Steels

Oriented electrical steels are iron-silicon alloys that were developed by ARMCO^®, AK Steel's predecessor, to provide the low core loss and high permeability required for more efficient and economical electrical transformers. Available in grades M-2, M-3, M-4 and M-6, with superior magnetic properties in the rolling direction, oriented steels are used in transformer cores. They are used in large generators and other apparatus when the design permits the directional magnetic characteristics to be used efficiently. The AK Steel Research and Innovation Center continues to develop new and improved grades to provide the electrical industry with core materials for the manufacture of more efficient electrical apparatus.

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TRAN-COR^® H Grain Oriented Electrical Steel

TRAN-COR^® H GOES is a high-permeability electrical steel offering an outstanding degree of grain orientation. The result is far lower core loss than possible with conventional grain-oriented electrical steels. These "super-oriented" materials provide higher permeability, particularly at higher operating inductions, and the potential for producing less noisy core structures due to lower magneto-striction. Laser scribing TRAN-COR^® H GOES provides additional beneficial core loss reductions through domain refinement. A highly focused Nd:YAG laser beam is used to rapidly scan material surfaces perpendicular to the rolling direction. They are available in grades H-0, H-1 and H-2.

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TRAN-COR^® X Grain Oriented Electrical Steel

TRAN-COR^® X GOES is suitable for distribution, medium power and large power transformers which employ stacked core technology. The high permeability of TRAN-COR X offers the potential for lower core loss and lower noise transformer core structures when compared to conventional grain oriented
electrical steels. The core loss characteristics are further enhanced with laser scribing. The patented alloy design of TRAN-COR X is only available from AK Steel.

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Secondary Electrical Steels

Non-prime / Secondary material of Electrical Steels is available on request, please follow this link: access request form.