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The word tama means 'precious', and the word hagane means 'steel'. [1] Tamahagane is used to make Japanese swords, daggers, knives, and other kinds of tools. The carbon content of the majority of analyzed Japanese swords historically lies between a mass of 0.5–0.7%; however, the range extends up to 1.5%. [2] [3]
The Ohitayama Tatara Ironworks (大板山たたら製鉄遺跡, Ōitayama tatara seitetsu iseki) was a premodern steelworks for the production of tatara steel located in the Shibuki neighborhood of the town of Hagi, Yamaguchi Prefecture in the San'yō region of Japan. The site was designated a National Historic Site of Japan in 2012. [1]
The steel used in sword production is known as tamahagane (玉鋼:たまはがね), or "jewel steel" (tama – ball or jewel, hagane – steel). Tamahagane is produced from iron sand, a source of iron ore, and mainly used to make samurai swords, such as the katana, and some tools. Diagram of a tatara and bellows
Nippon Steel sees the sale as a way to gain a substantial presence in the American market, driven, in part, by the big commitment to public works the Biden White House pushed through Congress.
Representatives for US Steel and Nippon Steel declined to comment on whether the companies had briefed Harris on the deal. In August 2023, US Steel rejected a takeover bid by Ohio-based Cleveland ...
Topy Industries, Ltd. (トピー工業株式会社, Topī Kōgyō Kabushiki-gaisha) is a Japanese company specializing in steel, [3] particularly automobile and industrial components. Its main products are steel products; wheels for passenger cars, buses, trucks and construction machinery; and undercarriage components for construction equipment ...
President Joe Biden on Friday blocked US Steel’s $14 billion sale to Japanese giant Nippon Steel on national security concerns, creating new uncertainty for an iconic American steelmaker.
The legitimate Japanese sword is made from Japanese steel "Tamahagane". [132] The most common lamination method the Japanese sword blade is formed from is a combination of two different steels: a harder outer jacket of steel wrapped around a softer inner core of steel. [133]