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Hot Rolled Steel Sheet And Method For Manufacturing Same
Abstract: Provided are a hot rolled steel sheet and a method for manufacturing same. This hot rolled steel sheet contains, in wt%, 0.050-0.100% of C, 0.01-1.00% of Si, 1.4-2.0% of Mn, 0.010-0.100% of Al, 0.005-0.500% of Cr, 0.005-0.300% of Mo, 0.001-0.050% of P, 0.001-0.010% of S, 0.001-0.010% of N, 0.005-0.050% of Nb, and 0.005-0.120% of Ti, with the remainder comprising Fe and inevitable impurities, and has a microstructure including at least 90 area% in total of ferrite and bainite phases, and less than 10 area% in total of residual pearlite, martensite, and MA phases.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
09 July 2025
Publication Number
30/2025
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application
Applicants
POSCO CO., LTD
6261, Donghaean-ro, Nam-gu,
Pohang-si,
Gyeongsangbuk-do 37859
Inventors
1. LEE, Je-Woong
20-26, Pokposarang-gil
Gwangyang-si,
Jeollanam-do 57807
2. KIM, Sung-Il
20-26, Pokposarang-gil
Gwangyang-si,
Jeollanam-do 57807
3. YI, Il-Cheol
20-26, Pokposarang-gil
Gwangyang-si,
Jeollanam-do 57807
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202517065582-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [09-07-2025(online)].pdf | 2025-07-09 |
| 2 | 202517065582-STATEMENT OF UNDERTAKING (FORM 3) [09-07-2025(online)].pdf | 2025-07-09 |
| 3 | 202517065582-REQUEST FOR EXAMINATION (FORM-18) [09-07-2025(online)].pdf | 2025-07-09 |
| 4 | 202517065582-PROOF OF RIGHT [09-07-2025(online)].pdf | 2025-07-09 |
| 5 | 202517065582-PRIORITY DOCUMENTS [09-07-2025(online)].pdf | 2025-07-09 |
| 6 | 202517065582-POWER OF AUTHORITY [09-07-2025(online)].pdf | 2025-07-09 |
| 7 | 202517065582-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [09-07-2025(online)].pdf | 2025-07-09 |
| 8 | 202517065582-FORM 18 [09-07-2025(online)].pdf | 2025-07-09 |
| 9 | 202517065582-FORM 1 [09-07-2025(online)].pdf | 2025-07-09 |
| 10 | 202517065582-FIGURE OF ABSTRACT [09-07-2025(online)].pdf | 2025-07-09 |
| 11 | 202517065582-DRAWINGS [09-07-2025(online)].pdf | 2025-07-09 |
| 12 | 202517065582-DECLARATION OF INVENTORSHIP (FORM 5) [09-07-2025(online)].pdf | 2025-07-09 |
| 13 | 202517065582-COMPLETE SPECIFICATION [09-07-2025(online)].pdf | 2025-07-09 |
| 14 | 202517065582-MARKED COPIES OF AMENDEMENTS [16-07-2025(online)].pdf | 2025-07-16 |
| 15 | 202517065582-FORM 13 [16-07-2025(online)].pdf | 2025-07-16 |
| 16 | 202517065582-AMMENDED DOCUMENTS [16-07-2025(online)].pdf | 2025-07-16 |
| 17 | 202517065582-FORM-26 [07-10-2025(online)].pdf | 2025-10-07 |