Monday, October 1, 2012
Hi-B Electrical Steel
The technology for manufacturing Hi-B electrical steel is closely held, and only six mills in the world produced it in 2007: AK Steel (United States), POSCO (Korea), Nippon and Kawasaki (Japan), TKES (Germany), and Cogent (United Kingdom). 51
via http://energy.gov/sites/prod/files/Large%20Power%20Transformer%20Study%20-%20June%202012_0.pdf
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