| 摘要 |
The present invention provides a high silicon steel sheet with excellent punching workability and magnetic characteristics. This high silicon steel sheet contains, in mass%, C: not more than 0.02%, P: not more than 0.02%, Si: 4.5% to 7.0%, Mn: 0.01% to 1.0%, Al: not more than 1.0%, O: not more than 0.01%, and N: not more than 0.01%, the balance comprising Fe and unavoidable impurities. The crystal grain boundary oxygen concentration (oxygen concentration in elements that segregate to the crystal grain boundaries) is not more than 30 at% and the α-Fe {211} plane integration degree P(211) at the steel sheet surface is at least 15%. P(211)=p(211)/S × 100(%) S=p(110)/100+p(200)/14.93+p(211)/25.88+p(310)/7.68+p(222)/1.59+p(321)/6.27+p(411)/1.55 p(hkl): integrated intensity of X-ray diffraction peak of {hkl} plane |
