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Steel Sheet For Hot Stamping And Hot Stamp Molded Body
Abstract: This steel sheet for hot stamping has a specific chemical composition, while having a metal structure that contains, in area%, 75% to 95% of ferrite, 5% to 25% of martensite, and a total of 0% to 5% of pearlite, bainite and cementite; the proportion of ferrite having a GAM value of 0.5 or less among the ferrite is 70% or more in percentage; the ferrite has an average grain size of 1.0 µm to 7.0 µm; the martensite has an average grain size of 0.5 µm to 3.0 µm; and the solid solution Nb concentration is 25 ppm or more.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
05 April 2024
Publication Number
46/2024
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application
Applicants
NIPPON STEEL CORPORATION
6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
Inventors
1. KUSUMI Kazuhisa
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
2. EGUCHI Haruhiko
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
3. SUZUKI Yuki
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
4. ARAMAKI Takashi
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
5. ITO Daisuke
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
6. IRIKAWA Hideaki
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
7. YANO Yoshinari
c/o NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo
1008071
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202417028234-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [05-04-2024(online)].pdf | 2024-04-05 |
| 2 | 202417028234-STATEMENT OF UNDERTAKING (FORM 3) [05-04-2024(online)].pdf | 2024-04-05 |
| 3 | 202417028234-REQUEST FOR EXAMINATION (FORM-18) [05-04-2024(online)].pdf | 2024-04-05 |
| 4 | 202417028234-PROOF OF RIGHT [05-04-2024(online)].pdf | 2024-04-05 |
| 5 | 202417028234-PRIORITY DOCUMENTS [05-04-2024(online)].pdf | 2024-04-05 |
| 6 | 202417028234-POWER OF AUTHORITY [05-04-2024(online)].pdf | 2024-04-05 |
| 7 | 202417028234-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [05-04-2024(online)].pdf | 2024-04-05 |
| 8 | 202417028234-FORM 18 [05-04-2024(online)].pdf | 2024-04-05 |
| 9 | 202417028234-FORM 1 [05-04-2024(online)].pdf | 2024-04-05 |
| 10 | 202417028234-DECLARATION OF INVENTORSHIP (FORM 5) [05-04-2024(online)].pdf | 2024-04-05 |
| 11 | 202417028234-COMPLETE SPECIFICATION [05-04-2024(online)].pdf | 2024-04-05 |
| 12 | 202417028234-FORM 3 [23-08-2024(online)].pdf | 2024-08-23 |