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High Strength Steel Plate With High Manganese Having Excellent Burring Workability
Abstract: There is provided a high strength steel plate with high manganese having excellent burring workability, which is used for structural members, bumper reinforcing materials and impact absorbing materials of automobiles, etc. The high strength steel plate includes, by weight: C: 0.2 to 1.0 %, Mn: 10 to 25 %, Al: 0.3 to 3.0 %, S: 0.05 % or less, P: 0.05 % or less, and the balance of Fe and inevitable impurities, wherein the chemical elements satisfactorily have a grain size of 18 D or more. The high strength steel plate can be useful to facilitate formation of automobile parts since it has excellent physical properties such as elongation and hole expansibility as well as strength.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
22 October 2008
Publication Number
24/2009
Publication Type
INA
Invention Field
METALLURGY
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2017-05-18
Renewal Date
Applicants
POSCO
1 Koedong-dong Nam-gu Pohang Kyungsangbook-do 790-300 Republic of Korea
Inventors
1. KIM Sung Kyu
C/o Gwangyang Iron & Steel Works 700 Geumho-dong Gwangyang Jeollanam-do 545-711 Republic of Korea
2. CHIN Kwang Geun
C/o Gwangyang Iron & Steel Works 700 Geumho-dong Gwangyang Jeollanam-do 545-711 Republic of Korea
Specification
HIGH STRENGTH STEEL PLATE WITH HIGH MANGANESE HAVING EXCELLENT BURRING WORKABILITY
Documents
Orders
| Section | Controller | Decision Date |
|---|---|---|
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 8867-DELNP-2008-GPA-(28-04-2009).pdf | 2009-04-28 |
| 1 | 8867-DELNP-2008-RELEVANT DOCUMENTS [30-03-2019(online)].pdf | 2019-03-30 |
| 2 | 8867-DELNP-2008-RELEVANT DOCUMENTS [29-03-2018(online)].pdf | 2018-03-29 |
| 2 | Translation-Search Report.pdf | 2011-08-20 |
| 3 | Priority Document.pdf | 2011-08-20 |
| 3 | 8867-DELNP-2008-PatentCertificateCoverLetter.pdf | 2017-05-18 |
| 4 | Power of Authority.pdf | 2011-08-20 |
| 4 | Other Patent Document [28-03-2017(online)].pdf | 2017-03-28 |
| 5 | Form-5.pdf | 2011-08-20 |
| 5 | 8867-DELNP-2008-Correspondence-160317.pdf | 2017-03-21 |
| 6 | Form-3.pdf | 2011-08-20 |
| 6 | 8867-DELNP-2008-GPA-160317.pdf | 2017-03-21 |
| 7 | Form-1.pdf | 2011-08-20 |
| 7 | Form 26 [15-03-2017(online)].pdf | 2017-03-15 |
| 8 | Drawings.pdf | 2011-08-20 |
| 8 | 8867-DELNP-2008_EXAMREPORT.pdf | 2016-06-30 |
| 9 | 8867-delnp-2008-Abstract-(24-09-2015).pdf | 2015-09-24 |
| 9 | 8867-DELNP-2008-Form-18.pdf | 2011-08-20 |
| 10 | 8867-delnp-2008-Claims-(24-09-2015).pdf | 2015-09-24 |
| 10 | 8867-DELNP-2008-Correspondence-Others-(28-04-209).pdf | 2011-08-20 |
| 11 | 8867-delnp-2008-Correspondence Others-(24-09-2015).pdf | 2015-09-24 |
| 11 | 8867-delnp-2008-Form-3-(27-04-2015).pdf | 2015-04-27 |
| 12 | 8867-delnp-2008-Correspondence Others-(27-04-2015).pdf | 2015-04-27 |
| 12 | 8867-delnp-2008-Description (Complete)-(24-09-2015).pdf | 2015-09-24 |
| 13 | 8867-delnp-2008-Form-2-(24-09-2015).pdf | 2015-09-24 |
| 13 | 8867-delnp-2008-Marked Claims-(24-09-2015).pdf | 2015-09-24 |
| 14 | 8867-delnp-2008-Form-2-(24-09-2015).pdf | 2015-09-24 |
| 14 | 8867-delnp-2008-Marked Claims-(24-09-2015).pdf | 2015-09-24 |
| 15 | 8867-delnp-2008-Correspondence Others-(27-04-2015).pdf | 2015-04-27 |
| 15 | 8867-delnp-2008-Description (Complete)-(24-09-2015).pdf | 2015-09-24 |
| 16 | 8867-delnp-2008-Correspondence Others-(24-09-2015).pdf | 2015-09-24 |
| 16 | 8867-delnp-2008-Form-3-(27-04-2015).pdf | 2015-04-27 |
| 17 | 8867-DELNP-2008-Correspondence-Others-(28-04-209).pdf | 2011-08-20 |
| 17 | 8867-delnp-2008-Claims-(24-09-2015).pdf | 2015-09-24 |
| 18 | 8867-delnp-2008-Abstract-(24-09-2015).pdf | 2015-09-24 |
| 18 | 8867-DELNP-2008-Form-18.pdf | 2011-08-20 |
| 19 | 8867-DELNP-2008_EXAMREPORT.pdf | 2016-06-30 |
| 19 | Drawings.pdf | 2011-08-20 |
| 20 | Form 26 [15-03-2017(online)].pdf | 2017-03-15 |
| 20 | Form-1.pdf | 2011-08-20 |
| 21 | 8867-DELNP-2008-GPA-160317.pdf | 2017-03-21 |
| 21 | Form-3.pdf | 2011-08-20 |
| 22 | 8867-DELNP-2008-Correspondence-160317.pdf | 2017-03-21 |
| 22 | Form-5.pdf | 2011-08-20 |
| 23 | Other Patent Document [28-03-2017(online)].pdf | 2017-03-28 |
| 23 | Power of Authority.pdf | 2011-08-20 |
| 24 | 8867-DELNP-2008-PatentCertificateCoverLetter.pdf | 2017-05-18 |
| 24 | Priority Document.pdf | 2011-08-20 |
| 25 | Translation-Search Report.pdf | 2011-08-20 |
| 25 | 8867-DELNP-2008-RELEVANT DOCUMENTS [29-03-2018(online)].pdf | 2018-03-29 |
| 26 | 8867-DELNP-2008-RELEVANT DOCUMENTS [30-03-2019(online)].pdf | 2019-03-30 |
| 26 | 8867-DELNP-2008-GPA-(28-04-2009).pdf | 2009-04-28 |