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Steel Plate
Abstract: Provided is a steel plate whereby excellent quality of appearance can be realized in a molded article. A steel plate, wherein the chemical composition thereof, in terms of mass%, is 0.030-0.145% C, 0-0.500% Si, 0.50-2.50% Mn, 0-0.100% P, 0-0.020% S, 0-1.000% Al, 0-0.0100% N, etc., the metallographic structure thereof comprises 70-95% ferrite by volume fraction and 5-30% of a hard phase by volume fraction, the value X1 obtained by dividing the standard deviation of the Vickers hardness H1/4 at the plate thickness 1/4 position by the average value of the Vickers hardness H1/4 is 0.025 or less, and the value X2 obtained by dividing the standard deviation of the Vickers hardness H1/2 at the plate thickness 1/2 position by the average value of the Vickers hardness H1/2 is 0.030 or less.
Notices, Deadlines & Correspondence
Patent Information
Applicants
NIPPON STEEL CORPORATION
Inventors
1. HIRONAKA, Satoshi
2. NAGANO, Mai
3. ITO, Yasuhiro
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202317088979-STATEMENT OF UNDERTAKING (FORM 3) [27-12-2023(online)].pdf | 2023-12-27 |
| 2 | 202317088979-PROOF OF RIGHT [27-12-2023(online)].pdf | 2023-12-27 |
| 3 | 202317088979-POWER OF AUTHORITY [27-12-2023(online)].pdf | 2023-12-27 |
| 4 | 202317088979-FORM 1 [27-12-2023(online)].pdf | 2023-12-27 |
| 5 | 202317088979-FIGURE OF ABSTRACT [27-12-2023(online)].pdf | 2023-12-27 |
| 6 | 202317088979-DECLARATION OF INVENTORSHIP (FORM 5) [27-12-2023(online)].pdf | 2023-12-27 |
| 7 | 202317088979-COMPLETE SPECIFICATION [27-12-2023(online)].pdf | 2023-12-27 |
| 8 | 202317088979-FORM 3 [24-06-2024(online)].pdf | 2024-06-24 |
| 9 | 202317088979-FORM 18 [14-04-2025(online)].pdf | 2025-04-14 |