IP Library Granted Patent US 11,053,574
Granted Patent B2
US 11,053,574 · App. 16/470,122 · Granted Jul 6, 2021

Non-oriented electrical steel sheet

Inventors: Hiroyoshi Yashiki (Tokyo, JP); Yoshiaki Natori (Tokyo, JP); Kazutoshi Takeda (Tokyo, JP); Susumu Mukawa (Tokyo, JP); Takuya Matsumoto (Tokyo, JP); Koji Fujita (Tokyo, JP); Takashi Morohoshi (Tokyo, JP); Masafumi Miyazaki (Tokyo, JP)
Assignee: NIPPON STEEL CORPORATION
C22C38/60C21D6/005C21D6/008C21D8/1222C21D8/1233C21D8/1261C21D9/46C22C38/001C22C38/002C22C38/005C22C38/008C22C38/02C22C38/04C22C38/06C22C38/14H01F1/14775C22C2202/02
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Quick Facts
Patent No.
US 11,053,574
App. No.
16/470,122
Granted
Jul 6, 2021
Kind
B2
Abstract

A non-oriented electrical steel sheet according to an aspect of the present invention contains, as a chemical composition, by mass %, C: more than 0% and 0.0050% or less, Si: 3.0% to 4.0%, Mn: 1.2% to 3.3%, P: more than 0% and less than 0.030%, S: more than 0% and 0.0050% or less, sol. Al: more than 0% and 0.0040% or less, N: more than 0% and 0.0040% or less, one or more of La, Ce, Pr, and Nd: 0.0005% to 0.0200% in total, Ca: 0.0005% to 0.0100%, Ti: 0.0005% to 0.0100%, Sn: 0% to 0.10%, Sb: 0% to 0.10%, Mg: 0% to 0.0100%, and a remainder including Fe and impurities, in which Si−0.5×Mn: 2.0% or more, and Si+0.5×Mn: 3.8% or more.

Claims (41)

1. A non-oriented electrical steel sheet comprising, as a chemical composition, by mass %,

C: more than 0% and 0.0050% or less;

Si: 3.0% to 4.0%;

Mn: 1.2% to 3.3%;

P: more than 0% and less than 0.030%;

S: more than 0% and 0.0050% or less;

sol. Al: more than 0% and 0.0040% or less;

N: more than 0% and 0.0040% or less;

one or more of La, Ce, Pr, and Nd: 0.0005% to 0.0200% in total;

Ca: 0.0005% to 0.0100%;

Ti: 0.0005% to 0.0100%;

Sn: 0% to 0.10%;

Sb: 0% to 0.10%;

Mg: 0% to 0.0100%; and

a remainder including Fe and impurities, wherein

Si−0.5×Mn:2.0% or more, and

Si+0.5×Mn:4.4% or more.

2. The non-oriented electrical steel sheet according to claim 1 , comprising, as the chemical composition, one or two selected from the group consisting of:

Sn:0.005% to 0.10%; and

Sb:0.005% to 0.10%.

3. The non-oriented electrical steel sheet according to claim 1 comprising, as the chemical composition:

Mg:0.0005% to 0.0100%.

4. The non-oriented electrical steel sheet according to claim 2 comprising, as the chemical composition:

Mg:0.0005% to 0.0100%.

5. A non-oriented electrical steel sheet comprising, as a chemical composition, by mass %,

C:0.0020% to 0.0038%;

Si:3.0% to 3.8%;

Mn:1.3% to 3.2%;

P:0.005% to 0.013%;

S:0.0007% to 0.0035%;

sol. Al:0.0008% to 0.0023%;

N:0.0009% to 0.0025%;

one or more of La, Ce, Pr, and Nd:0.0015% to 0.0075% in total;

Ca:0.0012% to 0.0035%;

Ti:0.0011% to 0.0035%;

Sn:0% to 0.051%;

Sb:0% to 0.031%;

Mg:0% to 0.0022%; and

a remainder including Fe and impurities, wherein

Si−0.5×Mn:2.1% or more, and

Si+0.5×Mn:4.4% or more.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 14, 2019
From: YASHIKI, HIROYOSHI; NATORI, YOSHIAKI; TAKEDA, KAZUTOSHI; MUKAWA, SUSUMU; MATSUMOTO, TAKUYA; FUJITA, KOJI; MOROHOSHI, TAKASHI; MIYAZAKI, MASAFUMI
To: NIPPON STEEL CORPORATION
Reel/Frame 049478/0508 →
Priority Claims (1)
JP JP2017-005212 · Jan 16, 2017 · national
Continuity (1)
Related Publication 20190316239A1 · Oct 17, 2019