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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 is then forged into a single plate, and the pieces of cast-iron are piled on top, and the whole thing is forge welded into a single billet, which is called the age-kitae process. The billet is then elongated, cut, folded, and forge welded again. The steel can be folded transversely (from front to back), or longitudinally (from side to ...
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%.
When cutting a straw target that is standing vertically, the easiest cut is the downward diagonal. This is due to a combination of the angle of impact of the cut against the grain (approximately 30-50 degrees from the surface), the downward diagonal angle of the swing, and the ability to use many of the major muscle groups and rotation of the ...
The Chinese swords had edges made of crucible steel similar to the metal found in Damascus swords, which were welded to a back of soft iron, to give both a hard and strong cutting edge but keeping the rest of the sword soft to prevent breakage. These produced a very hard and visible patterned-edge with a very visible transition at the weld, due ...
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.
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