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27Q120 grain oriented silicon steel is a conventional type cold rolled grain-oriented electrical steel strip, with a nominal maximum specific total loss P1.7/50 of 1.20W/kg, nominal thickness is 0.27mm, supplied in the fully processed state.
link:https://www.chinasiliconsteel.com/oriented-silicon-steel/normal-oriented-electrical-steel/27q120-grain-oriented-silicon-steel.html
27Q120 Grain Oriented Silicon Steel