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Cold Rolled Steel Sheet And Galvanized Steel Sheet With Excellent Press Formability And Method Of Manufacturing Thereof
Abstract: A cold-rolled steel sheet, according to one embodiment of the present invention, may comprise in percentage by weight: carbon (C): 0.010-0.025%; manganese (Mn): 0.10-0.25%; sulfur (S): 0.002-0.011%; boron (B): 0.0006-0.0026%; nitrogen (N): 0.0010-0.0034%; aluminum (Al): 0.006-0.028%; and the balance being Fe and unavoidable impurities, and may comprise precipitates of at least one of MnS and BN, wherein the average particle diameter of the precipitates may be 40-250 nm, the area fraction of the precipitates in the cold-rolled steel sheet may be 1-10%, and the yield strength may be 150-220 MPa.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
20 June 2024
Publication Number
51/2024
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application
Applicants
POSCO CO., LTD
(Goedong-dong) 6261 Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
Inventors
1. LEE, Byoung Ho
c/o POSCO, (Goedong-dong) 6261, Donghaean-ro,
Nam-gu, Pohang-si,
Gyeongsangbuk-do 37859
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202417047270-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [20-06-2024(online)].pdf | 2024-06-20 |
| 2 | 202417047270-STATEMENT OF UNDERTAKING (FORM 3) [20-06-2024(online)].pdf | 2024-06-20 |
| 3 | 202417047270-REQUEST FOR EXAMINATION (FORM-18) [20-06-2024(online)].pdf | 2024-06-20 |
| 4 | 202417047270-PROOF OF RIGHT [20-06-2024(online)].pdf | 2024-06-20 |
| 5 | 202417047270-POWER OF AUTHORITY [20-06-2024(online)].pdf | 2024-06-20 |
| 6 | 202417047270-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [20-06-2024(online)].pdf | 2024-06-20 |
| 7 | 202417047270-FORM 18 [20-06-2024(online)].pdf | 2024-06-20 |
| 8 | 202417047270-FORM 1 [20-06-2024(online)].pdf | 2024-06-20 |
| 9 | 202417047270-DRAWINGS [20-06-2024(online)].pdf | 2024-06-20 |
| 10 | 202417047270-DECLARATION OF INVENTORSHIP (FORM 5) [20-06-2024(online)].pdf | 2024-06-20 |
| 11 | 202417047270-COMPLETE SPECIFICATION [20-06-2024(online)].pdf | 2024-06-20 |
| 12 | 202417047270-FORM 3 [25-09-2024(online)].pdf | 2024-09-25 |