The blades are forged and shaped in the normal way, then carefully heat treated to achieve the required Bainite and Martensite structures before final polishing. Hanwei has now mastered this difficult process, using billets of L-6 tool steel (a very tough high-carbon low-alloy steel) as a starting point for this katana. It has been known as an exemplary Katana blade component for a number of years but its use has been restricted to a few top-class master smiths, due to the difficulties involved in performing the exact heat treatment procedures necessary for the production of a Bainite blade body in combination with the very hard Martensite Yakiba (edge section) required for Katana blades. A unique combination of folklore and functionality.īainite is a structure of high-carbon steel that combines great strength with excellent flexibility and shock absorption characteristics. It is then traditionally clay tempered to produce a wavy hamon (temper line) and an edge harness of HRC 60. The 14” tsuka is wrapped in black ray skin and silk ito while the Koshirae feature Oni in various classical styles. Here we have a very nice and classy Paul Chen Japanese Kami Katana This katana has a hand-forged and folded Swedish ASSAB-K120C powder steel blade with 1,000 layers differentially tempered to produce a distinctive hada (grain pattern). The 29" blade features the geometry of our Performance Series for outstanding cutting ability. The Japanese saying that translates to “Oni with an iron club” or "to be of an invincible nature" perfectly suits the L6 / Bainite blade on which our Oni Katana is built. Their power and ferocity, however, have not diminished. In modern culture they are beginning to move away from this menacing connotation into the role of guardian or protector, similar in character to gargoyles. The Oni are mythical creatures from Japanese folklore similar to western demons or trolls.
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