CA2493523C - High strength steel sheet and method for manufacturing same - Google Patents
High strength steel sheet and method for manufacturing same Download PDFInfo
- Publication number
- CA2493523C CA2493523C CA002493523A CA2493523A CA2493523C CA 2493523 C CA2493523 C CA 2493523C CA 002493523 A CA002493523 A CA 002493523A CA 2493523 A CA2493523 A CA 2493523A CA 2493523 C CA2493523 C CA 2493523C
- Authority
- CA
- Canada
- Prior art keywords
- steel sheet
- less
- cooling
- high strength
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Metal Rolling (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004020843 | 2004-01-29 | ||
JP2004-020843 | 2004-01-29 | ||
JP2004326545A JP4470701B2 (ja) | 2004-01-29 | 2004-11-10 | 加工性および表面性状に優れた高強度薄鋼板およびその製造方法 |
JP2004-326545 | 2004-11-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2493523A1 CA2493523A1 (en) | 2005-07-29 |
CA2493523C true CA2493523C (en) | 2009-01-27 |
Family
ID=34656285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002493523A Expired - Fee Related CA2493523C (en) | 2004-01-29 | 2005-01-21 | High strength steel sheet and method for manufacturing same |
Country Status (8)
Country | Link |
---|---|
US (2) | US20050173031A1 (zh) |
EP (1) | EP1559797B1 (zh) |
JP (1) | JP4470701B2 (zh) |
KR (1) | KR100673424B1 (zh) |
CN (1) | CN100439542C (zh) |
AU (1) | AU2005200300C1 (zh) |
CA (1) | CA2493523C (zh) |
TW (1) | TWI277658B (zh) |
Families Citing this family (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7959747B2 (en) | 2004-11-24 | 2011-06-14 | Nucor Corporation | Method of making cold rolled dual phase steel sheet |
US8337643B2 (en) | 2004-11-24 | 2012-12-25 | Nucor Corporation | Hot rolled dual phase steel sheet |
US7442268B2 (en) | 2004-11-24 | 2008-10-28 | Nucor Corporation | Method of manufacturing cold rolled dual-phase steel sheet |
US10071416B2 (en) | 2005-10-20 | 2018-09-11 | Nucor Corporation | High strength thin cast strip product and method for making the same |
US9999918B2 (en) | 2005-10-20 | 2018-06-19 | Nucor Corporation | Thin cast strip product with microalloy additions, and method for making the same |
US9149868B2 (en) | 2005-10-20 | 2015-10-06 | Nucor Corporation | Thin cast strip product with microalloy additions, and method for making the same |
JP4476923B2 (ja) * | 2005-12-15 | 2010-06-09 | 株式会社神戸製鋼所 | 衝突吸収性と母材靭性に優れた鋼板 |
CN1330785C (zh) * | 2005-12-27 | 2007-08-08 | 东北大学 | 一种抗拉强度1000MPa级复相钢板及制造方法 |
CN100348767C (zh) * | 2005-12-27 | 2007-11-14 | 东北大学 | 一种抗拉强度715~795MPa级双相钢板及制造方法 |
CA2636652A1 (en) * | 2006-01-26 | 2007-08-02 | Giovanni Arvedi | Hot rolled dual phase steel strip having features of a cold rolled strip |
JP4518029B2 (ja) * | 2006-02-13 | 2010-08-04 | 住友金属工業株式会社 | 高張力熱延鋼板とその製造方法 |
US11155902B2 (en) * | 2006-09-27 | 2021-10-26 | Nucor Corporation | High strength, hot dip coated, dual phase, steel sheet and method of manufacturing same |
CN100435987C (zh) * | 2006-11-10 | 2008-11-26 | 广州珠江钢铁有限责任公司 | 一种基于薄板坯连铸连轧流程采用Ti微合金化工艺生产700MPa级高强耐候钢的方法 |
WO2009016881A1 (ja) * | 2007-08-01 | 2009-02-05 | Kabushiki Kaisha Kobe Seiko Sho | 曲げ加工性および疲労強度に優れた高強度鋼板 |
US8435363B2 (en) | 2007-10-10 | 2013-05-07 | Nucor Corporation | Complex metallographic structured high strength steel and manufacturing same |
KR100957944B1 (ko) | 2007-12-28 | 2010-05-13 | 주식회사 포스코 | 신장플랜지성 및 용접성이 우수한 고강도 열연강판,열연산세강판 및 그 제조방법 |
JP5365217B2 (ja) * | 2008-01-31 | 2013-12-11 | Jfeスチール株式会社 | 高強度鋼板およびその製造方法 |
JP5194858B2 (ja) * | 2008-02-08 | 2013-05-08 | Jfeスチール株式会社 | 高強度熱延鋼板およびその製造方法 |
KR101079529B1 (ko) * | 2008-12-24 | 2011-11-03 | 주식회사 포스코 | 표면특성이 우수한 고강도 고연성 열연강판 및 그 제조방법 |
US20110277886A1 (en) | 2010-02-20 | 2011-11-17 | Nucor Corporation | Nitriding of niobium steel and product made thereby |
JP4998755B2 (ja) * | 2009-05-12 | 2012-08-15 | Jfeスチール株式会社 | 高強度熱延鋼板およびその製造方法 |
US9498840B2 (en) * | 2009-07-31 | 2016-11-22 | Neturen Co., Ltd. | Welding structural part and welding method of the same |
JP5744575B2 (ja) * | 2010-03-29 | 2015-07-08 | 新日鐵住金ステンレス株式会社 | 複相組織ステンレス鋼鋼板および鋼帯、製造方法 |
JP5884148B2 (ja) * | 2010-04-16 | 2016-03-15 | Jfeスチール株式会社 | 耐塗膜剥離性に優れた厚鋼板およびその製造方法 |
RU2457912C2 (ru) * | 2010-11-01 | 2012-08-10 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Способ производства горячекатаных низколегированных листов |
RU2449843C1 (ru) * | 2010-11-01 | 2012-05-10 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Способ производства горячекатаных высокопрочных низколегированных листов |
JP5365673B2 (ja) * | 2011-09-29 | 2013-12-11 | Jfeスチール株式会社 | 材質均一性に優れた熱延鋼板およびその製造方法 |
JP5842515B2 (ja) * | 2011-09-29 | 2016-01-13 | Jfeスチール株式会社 | 熱延鋼板およびその製造方法 |
TWI467030B (zh) * | 2011-10-06 | 2015-01-01 | Nippon Steel & Sumitomo Metal Corp | 鋼板及其製造方法 |
JP5953952B2 (ja) * | 2011-11-30 | 2016-07-20 | Jfeスチール株式会社 | 耐衝突性に優れた鋼材およびその製造方法 |
KR101678511B1 (ko) * | 2012-03-07 | 2016-11-22 | 제이에프이 스틸 가부시키가이샤 | 열간 프레스용 강판, 그의 제조 방법 및, 그것을 이용한 열간 프레스 부재의 제조 방법 |
CN102732794B (zh) * | 2012-05-31 | 2014-08-06 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种含Cr汽车结构用热轧酸洗板及其生产方法 |
CN102719755A (zh) * | 2012-05-31 | 2012-10-10 | 攀钢集团攀枝花钢铁研究院有限公司 | 高强度高成型性能的汽车结构用热轧酸洗板及其生产方法 |
CN102912235B (zh) * | 2012-10-29 | 2014-11-12 | 武汉钢铁(集团)公司 | 抗拉强度590MPa级热轧双相钢及其制造方法 |
WO2014156188A1 (ja) * | 2013-03-29 | 2014-10-02 | Jfeスチール株式会社 | 水素用鋼構造物ならびに水素用蓄圧器および水素用ラインパイプの製造方法 |
PL3196326T3 (pl) | 2014-09-17 | 2020-09-21 | Nippon Steel Corporation | Blacha stalowa cienka walcowana na gorąco |
WO2016132549A1 (ja) | 2015-02-20 | 2016-08-25 | 新日鐵住金株式会社 | 熱延鋼板 |
KR101957078B1 (ko) | 2015-02-20 | 2019-03-11 | 신닛테츠스미킨 카부시키카이샤 | 열연 강판 |
MX2017010537A (es) * | 2015-02-20 | 2017-12-14 | Nippon Steel & Sumitomo Metal Corp | Chapa de acero laminada en caliente. |
WO2016135898A1 (ja) | 2015-02-25 | 2016-09-01 | 新日鐵住金株式会社 | 熱延鋼板 |
CN107406929B (zh) | 2015-02-25 | 2019-01-04 | 新日铁住金株式会社 | 热轧钢板 |
RU2667943C1 (ru) * | 2015-03-06 | 2018-09-25 | ДжФЕ СТИЛ КОРПОРЕЙШН | Высокопрочная стальная труба, полученная электросваркой методом сопротивления, и способ её изготовления |
WO2017006144A1 (en) * | 2015-07-09 | 2017-01-12 | Arcelormittal | Steel for press hardening and press hardened part manufactured from such steel |
RU2605037C1 (ru) * | 2015-11-20 | 2016-12-20 | Федеральное Государственное Унитарное Предприятие "Центральный научно-исследовательский институт черной металлургии им. И.П. Бардина" (ФГУП "ЦНИИчермет им. И.П. Бардина") | Способ производства высокопрочной горячекатаной стали |
CN109563580A (zh) | 2016-08-05 | 2019-04-02 | 新日铁住金株式会社 | 钢板及镀覆钢板 |
CN109563586B (zh) | 2016-08-05 | 2021-02-09 | 日本制铁株式会社 | 钢板及镀覆钢板 |
US10711323B2 (en) * | 2016-08-10 | 2020-07-14 | Jfe Steel Corporation | Steel sheet, and production method therefor |
KR102236852B1 (ko) * | 2018-11-30 | 2021-04-06 | 주식회사 포스코 | 우수한 저항복비 및 저온인성 특성을 가지는 구조용강 및 그 제조방법 |
CN109576581A (zh) * | 2018-11-30 | 2019-04-05 | 宝山钢铁股份有限公司 | 一种高表面质量、低屈强比热轧高强度钢板及制造方法 |
KR20240077000A (ko) * | 2022-11-24 | 2024-05-31 | 주식회사 포스코 | 저망간 강재 및 이의 제조방법 |
CN118639115A (zh) * | 2024-08-16 | 2024-09-13 | 鞍钢股份有限公司 | 一种375MPa级冷冲压用汽车桥壳用钢及其生产方法 |
Family Cites Families (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5465118A (en) * | 1977-11-04 | 1979-05-25 | Nippon Kokan Kk <Nkk> | Manufacture of high strength hot rolled steel sheet |
JPS55110733A (en) * | 1979-02-19 | 1980-08-26 | Nippon Kokan Kk <Nkk> | Manufacture of cold-rolled high tensile steel having excellent strength-ductility balance |
US4296919A (en) * | 1980-08-13 | 1981-10-27 | Nippon Steel Corporation | Apparatus for continuously producing a high strength dual-phase steel strip or sheet |
JPS57137426A (en) * | 1981-02-20 | 1982-08-25 | Kawasaki Steel Corp | Production of low yield ratio, high tensile hot rolled steel plate by mixed structure |
JPH0774377B2 (ja) * | 1989-10-07 | 1995-08-09 | 新日本製鐵株式会社 | 耐久疲労性に優れた加工用熱延高強度鋼板の製造方法 |
JPH0826407B2 (ja) * | 1991-02-28 | 1996-03-13 | 日本鋼管株式会社 | 伸びフランジ性に優れた高強度熱延鋼板の製造方法 |
US5213634A (en) * | 1991-04-08 | 1993-05-25 | Deardo Anthony J | Multiphase microalloyed steel and method thereof |
JP2840479B2 (ja) * | 1991-05-10 | 1998-12-24 | 株式会社神戸製鋼所 | 疲労強度と疲労亀裂伝播抵抗の優れた高強度熱延鋼板の製造方法 |
JP3276258B2 (ja) * | 1995-01-20 | 2002-04-22 | 株式会社神戸製鋼所 | 化成処理性及び加工性の良好な高強度熱延鋼板及びその製造方法 |
FR2735147B1 (fr) * | 1995-06-08 | 1997-07-11 | Lorraine Laminage | Tole d'acier laminee a chaud a haute resistance et haute emboutissabilite renfermant du titane, et ses procedes de fabrication. |
JPH0949026A (ja) * | 1995-08-07 | 1997-02-18 | Kobe Steel Ltd | 強度−伸びバランス及び伸びフランジ性にすぐれる高強度熱延鋼板の製造方法 |
JP3538990B2 (ja) * | 1995-08-31 | 2004-06-14 | Jfeスチール株式会社 | 耐衝撃性に優れる高張力熱延鋼板およびその製造方法 |
JPH09170048A (ja) * | 1995-12-15 | 1997-06-30 | Kobe Steel Ltd | 疲労特性と穴拡げ性に優れた加工用高強度熱延鋼板 |
JP3253880B2 (ja) * | 1996-12-27 | 2002-02-04 | 川崎製鉄株式会社 | 成形性と耐衝突特性に優れる熱延高張力鋼板およびその製造方法 |
JPH11279693A (ja) * | 1998-03-27 | 1999-10-12 | Nippon Steel Corp | 焼付硬化性に優れた良加工性高強度熱延鋼板とその製造方法 |
DE19911287C1 (de) * | 1999-03-13 | 2000-08-31 | Thyssenkrupp Stahl Ag | Verfahren zum Erzeugen eines Warmbandes |
DE19936151A1 (de) * | 1999-07-31 | 2001-02-08 | Thyssenkrupp Stahl Ag | Höherfestes Stahlband oder -blech und Verfahren zu seiner Herstellung |
JP3873579B2 (ja) * | 2000-06-09 | 2007-01-24 | Jfeスチール株式会社 | 高加工性熱延鋼板の製造方法 |
JP3879381B2 (ja) * | 1999-09-29 | 2007-02-14 | Jfeスチール株式会社 | 薄鋼板および薄鋼板の製造方法 |
KR100430987B1 (ko) * | 1999-09-29 | 2004-05-12 | 제이에프이 엔지니어링 가부시키가이샤 | 박강판 및 박강판의 제조방법 |
EP1443124B1 (en) * | 2000-01-24 | 2008-04-02 | JFE Steel Corporation | Hot-dip galvanized steel sheet and method for producing the same |
JP4193315B2 (ja) * | 2000-02-02 | 2008-12-10 | Jfeスチール株式会社 | 延性に優れ降伏比の低い高強度薄鋼板および高強度亜鉛めっき薄鋼板ならびにそれらの製造方法 |
JP4313507B2 (ja) | 2000-08-23 | 2009-08-12 | 新日本製鐵株式会社 | 自動車客室構造部品用高強度鋼板とその製造方法 |
CA2387322C (en) * | 2001-06-06 | 2008-09-30 | Kawasaki Steel Corporation | High-ductility steel sheet excellent in press formability and strain age hardenability, and method for manufacturing the same |
KR20070087240A (ko) * | 2001-06-15 | 2007-08-27 | 신닛뽄세이테쯔 카부시키카이샤 | 고강도 알루미늄계 합금 도금 강판의 열간 프레스 방법 |
KR100437930B1 (ko) * | 2001-10-18 | 2004-07-09 | 스미토모 긴조쿠 고교 가부시키가이샤 | 가공성 및 형상정확도가 우수한 강판 및 이를 제조하는 방법 |
JP3912181B2 (ja) * | 2002-03-28 | 2007-05-09 | Jfeスチール株式会社 | 深絞り性と伸びフランジ性に優れた複合組織型高張力溶融亜鉛めっき冷延鋼板およびその製造方法 |
JP3870840B2 (ja) * | 2002-05-23 | 2007-01-24 | Jfeスチール株式会社 | 深絞り性と伸びフランジ性に優れた複合組織型高張力冷延鋼板およびその製造方法 |
EP1398390B1 (de) * | 2002-09-11 | 2006-01-18 | ThyssenKrupp Steel AG | Ferritisch/martensitischer Stahl mit hoher Festigkeit und sehr feinem Gefüge |
-
2004
- 2004-11-10 JP JP2004326545A patent/JP4470701B2/ja not_active Expired - Fee Related
-
2005
- 2005-01-20 US US11/040,994 patent/US20050173031A1/en not_active Abandoned
- 2005-01-20 EP EP05001139.4A patent/EP1559797B1/en not_active Ceased
- 2005-01-21 CA CA002493523A patent/CA2493523C/en not_active Expired - Fee Related
- 2005-01-25 AU AU2005200300A patent/AU2005200300C1/en not_active Ceased
- 2005-01-26 TW TW094102230A patent/TWI277658B/zh not_active IP Right Cessation
- 2005-01-26 CN CNB2005100063139A patent/CN100439542C/zh not_active Expired - Fee Related
- 2005-01-27 KR KR1020050007363A patent/KR100673424B1/ko active IP Right Grant
-
2009
- 2009-04-17 US US12/386,518 patent/US20090223607A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
KR100673424B1 (ko) | 2007-01-24 |
EP1559797A1 (en) | 2005-08-03 |
AU2005200300C1 (en) | 2008-03-06 |
EP1559797B1 (en) | 2013-06-05 |
TWI277658B (en) | 2007-04-01 |
TW200530409A (en) | 2005-09-16 |
JP4470701B2 (ja) | 2010-06-02 |
KR20050077757A (ko) | 2005-08-03 |
JP2005240172A (ja) | 2005-09-08 |
CN100439542C (zh) | 2008-12-03 |
CN1648277A (zh) | 2005-08-03 |
US20050173031A1 (en) | 2005-08-11 |
US20090223607A1 (en) | 2009-09-10 |
AU2005200300B2 (en) | 2007-05-03 |
AU2005200300A1 (en) | 2005-08-18 |
CA2493523A1 (en) | 2005-07-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2493523C (en) | High strength steel sheet and method for manufacturing same | |
EP1918396B1 (en) | High-tension steel sheet and process for producing the same | |
US6669789B1 (en) | Method for producing titanium-bearing microalloyed high-strength low-alloy steel | |
EP2554705B1 (en) | Hot-dip galvanized steel sheet with high tensile strength and superior processability and method for producing same | |
US6315946B1 (en) | Ultra low carbon bainitic weathering steel | |
US8449698B2 (en) | Dual phase steel sheet and method of manufacturing the same | |
RU2328545C2 (ru) | Композиция стали для производства холоднокатаных изделий из многофазной стали | |
JP2005528519A (ja) | 超高力鋼組成、超高力鋼製品の製造方法及び得られた製品 | |
US10626478B2 (en) | Ultra high-strength air-hardening multiphase steel having excellent processing properties, and method for manufacturing a strip of said steel | |
WO2016157258A1 (ja) | 高強度鋼板およびその製造方法 | |
KR20070113140A (ko) | 신장 플랜지성이 우수한 고강도 열연 강판과 그의 제법 | |
JP2005503483A (ja) | 極低温衝撃靭性の優れたラインパイプ用熱延鋼板及びその製造方法 | |
EP1493828A1 (en) | High tensile steel excellent in high temperature strength and method for production thereof | |
WO2020151855A1 (en) | Cold rolled steel sheet | |
US20140261919A1 (en) | Low carbon-high manganese steel and manufacturing process thereof | |
EP3964600A1 (en) | Ultra-high strength steel sheet having excellent shear workability and method for manufacturing same | |
JP3473480B2 (ja) | 強度と延性に優れる溶融亜鉛めっき鋼板およびその製造方法 | |
JP3458416B2 (ja) | 耐衝撃性に優れた冷延薄鋼板およびその製造方法 | |
KR101109953B1 (ko) | 연신율과 신장플랜지성이 우수한 고장력 열연강판 및 그 제조방법 | |
JP2006213957A (ja) | 材質均一性に優れた高伸びフランジ成形性熱延鋼板の製造方法 | |
JP3169293B2 (ja) | 耐衝撃性に優れた自動車用薄鋼板およびその製造方法 | |
KR100978734B1 (ko) | 복합조직강판 및 이를 제조하는 방법 | |
KR20100047016A (ko) | 구멍확장성이 우수한 고장력 열연강판 및 그 제조방법 | |
JP3172354B2 (ja) | 耐衝撃性に優れた薄鋼板 | |
JP2002003996A (ja) | 耐衝撃性に優れた高張力鋼板と製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20210831 |
|
MKLA | Lapsed |
Effective date: 20200121 |