{ "timeline": [ { "date": "1897/4", "tags": [ "会社設立" ], "category": "会社設立", "region": "", "importance": 3, "event": "住友家が大阪市安治川に住友伸銅場を開設", "detail": "", "significance": "", "source": "会社銀行八十年史（1955年）「住友金属工業」" }, { "date": "1901/6", "tags": [ "新規事業" ], "category": "新規事業", "region": "", "importance": 2, "event": "大阪伝法に住友鋳鋼場を開設し、わが国民間最初の平炉工場として製鋼業に着手", "detail": "", "significance": "", "source": "会社銀行八十年史（1955年）「住友金属工業」" }, { "date": "1913", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 1, "event": "住友伸銅場を住友伸銅所と改称", "detail": "", "significance": "", "source": "会社銀行八十年史（1955年）「住友金属工業」" }, { "date": "1915/12", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 1, "event": "住友鋳鋼場を株式会社住友鋳鋼所に改組", "detail": "", "significance": "", "source": "会社銀行八十年史（1955年）「住友金属工業」" }, { "date": "1920/11", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 1, "event": "住友鋳鋼所を住友製鋼所と改称", "detail": "", "significance": "", "source": "会社銀行八十年史（1955年）「住友金属工業」" }, { "date": "1926/7", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 2, "event": "住友伸銅所を株式組織に改め、資本金1,500万円の住友伸銅鋼管を設立", "detail": "", "significance": "", "source": "会社銀行八十年史（1955年）「住友金属工業」" }, { "date": "1935/9", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 3, "event": "住友伸銅鋼管と住友製鋼所が合併し、住友金属工業株式会社が発足", "detail": "", "significance": "", "source": "会社銀行八十年史（1955年）「住友金属工業」" }, { "date": "1945/11", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 3, "event": "財閥解体を受けて商号を扶桑金属工業に変更し、8工場で生産を再開", "detail": "", "significance": "", "source": "会社銀行八十年史（1955年）「住友金属工業」" }, { "date": "1949/7", "tags": [ "会社設立" ], "category": "会社設立", "region": "", "importance": 3, "event": "企業再建整備計画の認可により第二会社の新扶桑金属工業株式会社を設立（旧扶桑金属工業は解散）", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1949/9", "tags": [ "株式上場" ], "category": "株式上場", "region": "", "importance": 1, "event": "東京、大阪、名古屋の各証券取引所に上場", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1950/12", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 1, "event": "鳴海、豊橋の2工場を分離", "detail": "", "significance": "", "source": "会社銀行八十年史（1955年）「住友金属工業」" }, { "date": "1951/9", "tags": [ "株式上場" ], "category": "株式上場", "region": "", "importance": 1, "event": "日本パイプ製造株式会社（現商号、住友鋼管株式会社）が東京証券取引所に上場", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1952/5", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 3, "event": "商号を住友金属工業株式会社に変更", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1953/7", "tags": [ "企業買収" ], "category": "企業買収", "region": "", "importance": 3, "event": "小倉製鋼株式会社を合併し小倉製鉄所が発足、銑鋼一貫体制を確立", "detail": "", "significance": "", "source": "有価証券報告書", "link": "/tse/5405/decisions/ogura-steel-merger-1953/" }, { "date": "1959/8", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 2, "event": "伸銅、アルミニウム圧延部門を分離し、住友軽金属工業株式会社を設立", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1961/1", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 2, "event": "航空機器事業部門を分離し、住友精密工業株式会社を設立", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1961/3", "tags": [ "設備投資" ], "category": "設備投資", "region": "", "importance": 3, "event": "和歌山製鉄所が発足し、第1高炉に火入れ", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1963/1", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 2, "event": "磁鋼、電子材料製造部門を分離し、住友特殊金属株式会社を設立", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1968/12", "tags": [ "設備投資" ], "category": "設備投資", "region": "", "importance": 3, "event": "鹿島製鉄所が発足", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1970/3", "tags": [ "株式上場" ], "category": "株式上場", "region": "", "importance": 1, "event": "住友精密工業株式会社が東京及び大阪の各証券取引所に上場", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1971/1", "tags": [ "設備投資" ], "category": "設備投資", "region": "", "importance": 2, "event": "鹿島製鉄所の第1高炉に火入れ", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1980/1", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 2, "event": "住友海南鋼管株式会社を合併", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1987", "tags": [ "構造改革" ], "category": "構造改革", "region": "", "importance": 2, "event": "円高不況を受けて鋼管製造所（尼崎）のシームレス鋼管工場と和歌山製鉄所の厚板工場を休止", "detail": "", "significance": "", "source": "日本産業史 第4巻（日本経済新聞社、1994年）「鉄鋼－徹底合理化と多角化に挑む」" }, { "date": "1991/7", "tags": [ "会社設立" ], "category": "会社設立", "region": "", "importance": 1, "event": "キョウエイ製鐵株式会社を設立（現商号、住金スチール株式会社）", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1992/10", "tags": [ "企業買収" ], "category": "企業買収", "region": "", "importance": 2, "event": "日本ステンレス株式会社と合併", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1993", "tags": [ "設備投資" ], "category": "設備投資", "region": "", "importance": 2, "event": "和歌山製鉄所の中径シームレスパイプ工場設備の全面更新を発表", "detail": "", "significance": "", "source": "日本産業史 第4巻（日本経済新聞社、1994年）「鉄鋼－徹底合理化と多角化に挑む」" }, { "date": "1996/3", "tags": [ "事業売却" ], "category": "事業売却", "region": "", "importance": 1, "event": "株式会社住友金属セラミックスへ電子セラミックス部品事業の営業権を譲渡（同年4月に株式会社住友金属エレクトロデバイスへ商号変更）", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1997/10", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 1, "event": "イゲタ鋼板株式会社へ建材向けカラー鋼板事業とステンレス・チタン建築事業を譲渡し、同社は住友金属建材株式会社に商号変更", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1998/10", "tags": [ "企業買収" ], "category": "企業買収", "region": "", "importance": 3, "event": "住友シチックス株式会社と合併し、シリコンウエーハ事業を本体に取り込む", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1999/7", "tags": [ "事業売却" ], "category": "事業売却", "region": "", "importance": 2, "event": "日本パイプ製造株式会社へ和歌山製鉄所の溶接鋼管事業を譲渡し、同社は住友鋼管株式会社に商号変更", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "1999/10", "tags": [ "経営計画", "構造改革" ], "category": "経営計画|構造改革", "region": "", "importance": 3, "event": "経営改革プランを推進し、2000年度の黒字化と復配を目標に選択と集中に着手", "detail": "", "significance": "", "source": "週刊東洋経済 1999年10月30日号「住友金属の選択と集中」", "link": "/tse/5405/decisions/wakayama-restructuring-1999/" }, { "date": "2000", "tags": [ "経営危機" ], "category": "経営危機", "region": "", "importance": 2, "event": "日産自動車の資材調達先集約により自動車用鋼板の納入シェアを失う", "detail": "", "significance": "", "source": "週刊東洋経済 2002年5月18日号「経営分析 住友金属工業」" }, { "date": "2000/3", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 2, "event": "株式会社住友金属小倉及び株式会社住友金属直江津へ条鋼事業及びステンレス特品事業をそれぞれ譲渡（同年4月営業開始）", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2000/8", "tags": [ "設備投資" ], "category": "設備投資", "region": "", "importance": 2, "event": "鹿島製鉄所の新第1高炉建設を決定", "detail": "", "significance": "", "source": "週刊東洋経済 2005年5月21日号「住友金属 2度の信用不安から生還」" }, { "date": "2001/10", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 1, "event": "住金物流株式会社が鹿島運輸株式会社及び株式会社エスケイケイ物流と合併し、住友金属物流株式会社に商号変更", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2001/12", "tags": [ "業務提携" ], "category": "業務提携", "region": "", "importance": 2, "event": "新日本製鐵株式会社との包括的提携に向けた交渉開始を発表", "detail": "", "significance": "", "source": "週刊東洋経済 2002年5月18日号「経営分析 住友金属工業」" }, { "date": "2002/2", "tags": [ "事業売却" ], "category": "事業売却", "region": "", "importance": 3, "event": "シリコンウエーハ事業を株式会社シリコンユナイテッドマニュファクチュアリング（現商号、株式会社ＳＵＭＣＯ）に譲渡", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2002/3", "tags": [ "親子上場" ], "category": "親子上場", "region": "", "importance": 1, "event": "住友チタニウム株式会社（現商号、株式会社大阪チタニウムテクノロジーズ）が東京証券取引所に上場", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2002/4", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 2, "event": "鋼板・建材、鋼管、交通産機品、エンジニアリングの4カンパニー制を導入", "detail": "", "significance": "", "source": "週刊東洋経済 2002年5月18日号「経営分析 住友金属工業」" }, { "date": "2003/1", "tags": [ "株主対応" ], "category": "株主対応", "region": "", "importance": 3, "event": "新日本製鐵、株式会社神戸製鋼所及び住友グループ各社を引受先とする第三者割当増資を実施", "detail": "", "significance": "", "source": "週刊東洋経済 2005年5月21日号「住友金属 2度の信用不安から生還」", "link": "/tse/5405/decisions/three-way-capital-alliance-2003/" }, { "date": "2003/3", "tags": [ "事業売却" ], "category": "事業売却", "region": "", "importance": 1, "event": "住友チタニウム株式会社の株式の一部を株式会社神戸製鋼所及び住友商事株式会社へ譲渡（連結子会社から持分法適用関連会社へ変更）", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2003/4", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 1, "event": "鹿島プラント工業株式会社と住金和歌山プラント株式会社が合併して住金プラント株式会社となり、同社へプラントエンジニアリング事業を譲渡", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2003/5", "tags": [ "合弁設立" ], "category": "合弁設立", "region": "", "importance": 2, "event": "台湾の中国鋼鉄との合弁で東アジア連合鋼鉄を設立し、和歌山製鉄所上工程のスラブ供給体制を構築", "detail": "", "significance": "", "source": "週刊東洋経済 2005年5月21日号「住友金属 2度の信用不安から生還」" }, { "date": "2003/9", "tags": [ "企業買収" ], "category": "企業買収", "region": "", "importance": 1, "event": "関東特殊製鋼株式会社を株式交換により完全子会社化", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2003/9", "tags": [ "事業売却" ], "category": "事業売却", "region": "", "importance": 2, "event": "住友特殊金属株式会社の株式の大半を日立金属株式会社へ譲渡（持分法適用関連会社から除外）", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2003/10", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 3, "event": "ステンレス事業を会社分割し、新日本製鐵と共同設立した新日鐵住金ステンレス株式会社に承継", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2003/11", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 2, "event": "和歌山製鉄所上工程部門を会社分割し、株式会社住金鋼鉄和歌山に承継", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2005/10", "tags": [ "事業売却" ], "category": "事業売却", "region": "", "importance": 1, "event": "エネルギーエンジニアリング事業を住友金属プランテック株式会社に譲渡（同社は住友金属パイプエンジ株式会社に商号変更）", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2006/12", "tags": [ "事業売却" ], "category": "事業売却", "region": "", "importance": 1, "event": "住友金属建材株式会社が建材薄板事業を日鉄鋼板株式会社へ、道路・土木商品事業を日鐵建材工業株式会社へ会社分割により承継", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2007/6", "tags": [ "設備投資" ], "category": "設備投資", "region": "", "importance": 1, "event": "住友金属鹿島火力発電所が営業運転を開始", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2008/4", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 1, "event": "チタン事業を会社分割し、株式会社住友金属直江津に承継", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2009/7", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 1, "event": "新日本製鐵グループとの電弧溶接ステンレス鋼管事業を統合し、住金日鉄ステンレス鋼管株式会社が発足", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2009/7", "tags": [ "設備投資" ], "category": "設備投資", "region": "", "importance": 3, "event": "和歌山製鉄所の新第1高炉に火入れ", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2012/1", "tags": [ "組織再編" ], "category": "組織再編", "region": "", "importance": 2, "event": "株式会社住友金属小倉及び株式会社住友金属直江津と合併", "detail": "", "significance": "", "source": "有価証券報告書" }, { "date": "2012/10", "tags": [ "組織再編", "上場廃止" ], "category": "組織再編|上場廃止", "region": "", "importance": 3, "event": "新日本製鐵株式会社と合併して新日鐵住金株式会社が発足し、上場廃止となる", "detail": "", "significance": "", "source": "週刊東洋経済 2012年9月28日号「ついに新日鉄住金が始動」" } ] }