Non-grain oriented electrical steel and method for manufacturing same
AssigneePosco
InventorsJae-Song Kim, Seung Il Kim, Jae Kim, Su-Yong Shin, Yong-Soo Kim
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AssigneePosco
InventorsJae-Song Kim, Seung Il Kim, Jae Kim, Su-Yong Shin, Yong-Soo Kim
Estimating the term…
A non-oriented electrical steel sheet according to an embodiment of the present invention includes: in wt %, C at 0.004 wt % or less (excluding 0 wt %), Si at 2.5 to 4.0 wt %, P at 0.1 wt % or less (excluding 0 wt %), Al at 0.3 to 2.0 wt %, N at 0.003 wt % or less (excluding 0 wt %), S at 0.003 wt % or less (excluding 0 wt %), Mn at 0.15 to 2.5 wt %, Cr at 0.5 wt % (excluding 0 wt %), and the balance including Fe and other impurities unavoidably added thereto; satisfies the following Equation 1; and has an average grain size of 20 μm or less. [Mn]≥1450×[S]−0.8 [Equation 1] (In Equation 1, [Mn] and [S] represent a content (wt %) of Mn and S, respectively.)
A non-oriented electrical steel sheet, comprising:
A manufacturing method of a non-oriented electrical steel sheet, comprising:
Dependencies are inferred from the claim text.