Patent ID: 11859265
Assignee: NIPPON STEEL CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  H  B  Y | IPC C  H

Claim 25:
26. A non oriented electrical steel sheet comprising a chemical composition containing, by mass %,
0.005% or less of C,
1.0% or more and 5.0% or less of Si,
less than 2.5% of sol. Al,
3.0% or less of Mn,
0.3% or less of P,
0.01% or less of S,
0.01% or less of N,
0.10% or less of B,
0.10% or less of O,
0.10% or less of Mg,
0.01% or less of Ca,
0.10% or less of Ti,
0.10% or less of V,
5.0% or less of Cr,
5.0% or less of Ni,
5.0% or less of Cu,
0.10% or less of Zr,
0.10% or less of Sn,
0.10% or less of Sb,
0.10% or less of Ce,
0.10% or less of Nd,
0.10% or less of Bi,
0.10% or less of W,
0.10% or less of Mo,
0.10% or less of Nb,
0.10% or less of Y, and
a balance comprising Fe and impurities, wherein
a sheet thickness is 0.10 mm or more and 0.35 mm or less,
an average grain size is 30 μm or more and 200 μm or less,
an X1 value defined by a following expression 1 is less than 0.845,
an X2 value defined by a following expression 2 is 0.800 or more, and
an iron loss W10/1k when excited so as to be a magnetic flux density of 1.0 T at a frequency of 1 kHz is 80 W/kg or less,
where the expression 1 is X1=(2×B50L+B50C)/(3×IS),
where the expression 2 is X2=(B50L+2×B50D+B50C)/(4×IS), and
where B50L denotes a magnetic flux density in a rolling direction when magnetized with a magnetizing force of 5000 A/m, B50C denotes a magnetic flux density in a transverse direction when magnetized with a magnetizing force of 5000 A/m, B50D denotes a magnetic flux density in a direction making an angle of 45° with the rolling direction when magnetized with a magnetizing force of 5000 A/m, and Is denotes a spontaneous magnetization at room temperature.