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Stainless steel is a popular class of material for knife blades because it resists corrosion and is easy to maintain. However, it is not impervious to corrosion or rust. For a steel to be considered stainless it must have a Chromium content of at least 10.5%. [24] 154CM / ATS-34 steels. These two steels are practically identical in composition ...
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.
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%.
Pattern welding dates to the first millennium BC, with Celtic, and later Germanic swords exhibiting the technique, [5] with the Romans describing the blade patternation. [6] [7] By the 2nd and 3rd century AD, the Celts commonly used pattern welding for decoration in addition to structural reasons.
Steel grades to classify various steels by their composition and physical properties have been developed by a ... 1045 [7] C45 CK45 CF45 CQ45: 060A47 080A46 080M46 ...
Katana, showing the hamon as the outline of the yakiba. The nioi appears faintly as the bright line following the hamon; especially visible at the tip (kissaki). In swordsmithing, hamon (刃文) (from Japanese, literally "edge pattern") is a visible effect created on the blade by the hardening process.
Wootz steel is a crucible steel characterized by a pattern of bands and high carbon content. These bands are formed by sheets of microscopic carbides within a tempered martensite or pearlite matrix in higher- carbon steel , or by ferrite and pearlite banding in lower-carbon steels.
kōgai (笄) – a skewer for the owner's hair-do, carried in a pocket of the scabbards of katana and wakizashi on the side opposite of the kozuka. [33] [34] kogatana (小刀) – any knife, particularly a small utility knife carried in a pocket of the scabbards of katana and wakizashi. ko-itame-hada (小板目肌) – see itame-hada. [35]