Patent ID: 6475304
Filing Date: 2002-11-05
Classification: C21D,C22C

Abstract:
A grain-oriented silicon steel containing Cr and Bi as steel constituents and having a forsterite coating on its surface,wherein said steel and said forsterite coating combined together contain about C&lE;30 wtppm, Si: 2.0-4.5 wt %, Al: 0.005-0.03 wt %, N: 0.0015-0.006 wt %, Mn: 0.02-0.5 wt %, Cr: 0.1-1.0 wt %, and Bi: 0.001-0.15 wt %, and wherein the steel sheet has a magnetic flux density of B8&gE;1.96T.