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Steel Sheet And Plated Steel Sheet
Abstract: Provided are: a steel sheet that contains 0.05-0.40% of C, 0.2-3.0% of Si, and 0.1-5.0% of Mn, that contains a granular oxide at a surface layer of the steel sheet, and in which the average grain size of the granular oxide is at most 300 nm, and the number density of the granular oxide is at least 4.0/µm2, a Si-Mn depletion layer is included that has a thickness of at least 3.0 µm from the surface of the steel sheet, and the contained amounts of Si and Mn in the Si-Mn depletion layer excluding oxides at a position 1/2 of the thickness are each less than 10% of the contained amounts of Si and Mn, respectively, at a center portion of the thickness of the steel sheet; and a plated steel sheet using the steel sheet.
Notices, Deadlines & Correspondence
Patent Information
Applicants
NIPPON STEEL CORPORATION
Inventors
1. MITSUNOBU, Takuya
2. MATSUDA, Keitaro
3. MAKI, Jun
4. TAKAHASHI, Takehiro
5. TAKEBAYASHI, Hiroshi
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202317072623-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [25-10-2023(online)].pdf | 2023-10-25 |
| 2 | 202317072623-STATEMENT OF UNDERTAKING (FORM 3) [25-10-2023(online)].pdf | 2023-10-25 |
| 3 | 202317072623-REQUEST FOR EXAMINATION (FORM-18) [25-10-2023(online)].pdf | 2023-10-25 |
| 4 | 202317072623-PROOF OF RIGHT [25-10-2023(online)].pdf | 2023-10-25 |
| 5 | 202317072623-POWER OF AUTHORITY [25-10-2023(online)].pdf | 2023-10-25 |
| 6 | 202317072623-FORM 18 [25-10-2023(online)].pdf | 2023-10-25 |
| 7 | 202317072623-FORM 1 [25-10-2023(online)].pdf | 2023-10-25 |
| 8 | 202317072623-DRAWINGS [25-10-2023(online)].pdf | 2023-10-25 |
| 9 | 202317072623-DECLARATION OF INVENTORSHIP (FORM 5) [25-10-2023(online)].pdf | 2023-10-25 |
| 10 | 202317072623-COMPLETE SPECIFICATION [25-10-2023(online)].pdf | 2023-10-25 |
| 11 | 202317072623-FORM 3 [01-03-2024(online)].pdf | 2024-03-01 |