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Tamahagane. Tamahagane (玉鋼) is a type of steel made in the Japanese tradition. 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.
Tamahagane, as a raw material, is a highly impure metal. Formed in a bloomery process, the bloom of sponge iron begins as an inhomogeneous mixture of wrought iron, steels, and pig iron. The pig iron contains more than 2% carbon. The high-carbon steel has about 1–1.5% carbon while the low-carbon iron contains about 0.2%.
Tamahagane (玉鋼) is a general term for steel, not used prior to the Meiji Era, literally meaning "precious steel". Steel is smelted at Shimane facility for Japanese swords (nihontō (日本刀), commonly known as katana (刀)) by contemporary Japanese forge masters like Kihara Akira and Gassan Sadatoshi is still smelted in a tatara.
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]
The $14.9 billion sale of iconic steelmaker US Steel to Japan’s Nippon Steel ends months of speculation over industry consolidation in a move criticized by union workers, but seen by one analyst ...
In 1976, in order to secure sword-making materials that would become increasingly difficult to obtain, the Nittoho Tatara Plant was established to produce wako (Japanese steel for blades) and tamahagane (High-quality blade steel), in Okuizumo town, Shimane Prefecture. [12] In 1977, the Nittoho Tatara Plant was revived in Yokota Town, Shimane ...
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. The ...
Japan's Nippon Steel said on Thursday it has extended the closing period for its $15 billion purchase of U.S. Steel, expressing confidence that the acquisition will protect and grow the American ...
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