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NON-ORIENTED ELECTRICAL STEEL SHEET AND METHOD OF PRODUCING SAME

  • US 20190330710A1
  • Filed: 01/12/2018
  • Published: 10/31/2019
  • Est. Priority Date: 01/17/2017
  • Status: Active Grant
First Claim
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1. A non-oriented electrical steel sheet comprising a chemical composition containing, by mass %,C:

  • 0.0050% or less,Si;

    1.50% or more and 4.00% or less,Al;

    0.500% or less,Mn;

    0.10% or more and 5.00% or less,S;

    0.0200% or less,P;

    0.200% or less,N;

    0.0050% or less,O;

    0.0200% or less, andat least one of Sb;

    0.0010% or more and 0.10% or less or Sn;

    0.0010% or more and 0.10% or less,with the balance being Fe and inevitable impurities, whereinthe non-oriented electrical steel sheet has an Ar3 transformation temperature of 700°

    C. or higher, a grain size of 80 μ

    m or more and 200 μ

    m or less, and a Vickers hardness of 140 HV or more and 230 HV or less.

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