NON-ORIENTED ELECTRICAL STEEL SHEET
A non-oriented electrical steel sheet contains: C: not less than 0.003 mass % nor more than 0.05 mass %; N: not less than 0.001 mass % nor more than 0.01 mass %; and Si: not less than 2.8 mass % nor more than 3.5 mass %. The non-oriented electrical steel sheet further contains at least one kind selected from a group consisting of Ni: 4.0 mass % or less and Mn: 2.0 mass % or less, in a total amount of 0.5 mass % or more, and further contains Ti, a value R Ti being not less than 1 nor more than 10, the value R Ti being expressed by [Ti]/(4×([C]+[N])) when a Ti content is expressed as [Ti] mass %, a C content is expressed as [C] mass %, and an N content is expressed as [N] mass %. An Al content is 3.0 mass % or less, and a P content is 0.2 mass % or less.
1 . A non-oriented electrical steel sheet containing:
C: not less than 0.003 mass % nor more than 0.05 mass %;
N: not less than 0.001 mass % nor more than 0.01 mass %; and
Si: not less than 2.8 mass % nor more than 3.5 mass %,
further containing at least one kind selected from a group consisting of Ni: 4.0 mass % or less and Mn: 2.0 mass % or less, in a total amount of 0.5 mass % or more, and
further containing Ti, a value R Ti being not less than 1 nor more than 10, the value R Ti being expressed by [Ti]/(4×([C]+[N])) when a Ti content is expressed as [Ti] mass %, a C content is expressed as [C] mass %, and an N content is expressed as [N] mass %,
wherein
an Al content is 3.0 mass % or less,
a P content is 0.2 mass % or less, and
a balance is composed of Fe and inevitable impurities.
2 . The non-oriented electrical steel sheet according to claim 1 , wherein the Ti content is not less than 0.1 mass % nor more than 0.3 mass %.
3 . The non-oriented electrical steel sheet according to claim 1 , further containing B: not less than 0.001 mass % nor more than 0.007 mass %.
4 . The non-oriented electrical steel sheet according to claim 2 , further containing B: not less than 0.001 mass % nor more than 0.007 mass %.
5 . The non-oriented electrical steel sheet according to claim 1 , further containing at least one kind selected from a group consisting of:
Cu: not less than 0.02 mass % nor more than 1.0 mass %;
Sn: not less than 0.02 mass % nor more than 0.5 mass %;
Sb: not less than 0.02 mass % nor more than 0.5 mass %;
Cr: not less than 0.02 mass % nor more than 3.0 mass %; and
rare earth metal: not less than 0.001 mass % nor more than 0.01 mass %.
6 . The non-oriented electrical steel sheet according to claim 2 , further containing at least one kind selected from a group consisting of:
Cu: not less than 0.02 mass % nor more than 1.0 mass %;
Sn: not less than 0.02 mass % nor more than 0.5 mass %;
Sb: not less than 0.02 mass % nor more than 0.5 mass %;
Cr: not less than 0.02 mass % nor more than 3.0 mass %; and
rare earth metal: not less than 0.001 mass % nor more than 0.01 mass %.
7 . The non-oriented electrical steel sheet according to claim 3 , further containing at least one kind selected from a group consisting of:
Cu: not less than 0.02 mass % nor more than 1.0 mass %;
Sn: not less than 0.02 mass % nor more than 0.5 mass %;
Sb: not less than 0.02 mass % nor more than 0.5 mass %;
Cr: not less than 0.02 mass % nor more than 3.0 mass %; and
rare earth metal: not less than 0.001 mass % nor more than 0.01 mass %.
8 . The non-oriented electrical steel sheet according to claim 4 , further containing at least one kind selected from a group consisting of:
Cu: not less than 0.02 mass % nor more than 1.0 mass %;
Sn: not less than 0.02 mass % nor more than 0.5 mass %;
Sb: not less than 0.02 mass % nor more than 0.5 mass %;
Cr: not less than 0.02 mass % nor more than 3.0 mass %; and
rare earth metal: not less than 0.001 mass % nor more than 0.01 mass %.