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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.
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.
The word katana first appears in Japanese in the Nihon Shoki of 720. The term is a compound of kata ("one side, one-sided") + na ("blade"), [6] [7] [8] in contrast to the double-sided tsurugi. The katana belongs to the nihontō family of swords, and is distinguished by a blade length (nagasa) of more than 2 shaku, approximately 60 cm (24 in). [9]
The 10xx series is the most popular choice for carbon steel used in knives as well as katanas. They can take and keep a very sharp edge. [59] 1095, a popular high-carbon steel for knives; it is harder but more brittle than lower-carbon steels such as 1055, 1060, 1070, and 1080.
In some techniques, notably the traditional folded steel blades of China, Korea, and Japan, the billet might be drawn, folded and welded back on itself creating layers of steel of different types. In others longer bars or rods of steel and iron might be welded together, edge to edge, to create the basic billet placing the softer iron inside ...
The origin of the name "Damascus Steel" is contentious. Islamic scholars al-Kindi (full name Abu Ya'qub ibn Ishaq al-Kindi, circa 800 CE – 873 CE) and al-Biruni (full name Abu al-Rayhan Muhammad ibn Ahmad al-Biruni, circa 973 CE – 1048 CE) both wrote about swords and steel made for swords, based on their surface appearance, geographical location of production or forging, or the name of the ...
The name "Toledo steel" comes from the city where these special steel products were most-notably crafted: Toledo, Spain.Toledo steel forging techniques were developed from ancient customs associated with culture in the Iberian Peninsula, and used to forge many different types of weapons over the course of many centuries.
The swords of the medieval Chinese Tang dynasty (many of which are preserved in Japanese museums) are made with this lamination technique of a harder steel core wrapped in a softer steel jacket. Jacketed lamination techniques, as well as repeated hammering and folding techniques, date to at least the ancient Chinese Han dynasty of 202 BC to 220 AD.