1095 carbon folded steel japanese katana sword clay tempered full tang sharp

  
1095 carbon folded steel japanese katana sword clay tempered full tang sharp. Condition: New Item number: ESD03.

Ito: white silk sageo: white and black thick silk. Habaki: high-grade brass seppa: high-grade brass. Blade Steel:clay tempered 1095 carbon steel, pattern folded steel, sharp.

Overall length: 103CM Blade length: 70CM. Handle length: 26CM Blade width: 3.2CM. Blade thickness:0.7CM bo-hi: no bo-hi.

Before being quenched, a special clay mixture can be applied onto the blade to harden the edge and obtain different hardness on the blade. And would be applied to the edge of the blade before being quenched. During quenching, a chemical reaction between the clay mixture and the hot steel occurs during the sudden temperature drop and carbon is fed into the blade in high amounts, creating an extremely tough edge. A clay hardened blade can only be quenched in water, thus increasing the defect rate even more.

Another way for clay tempering is to apply clay along the blade but let edge exposed. Thus, while quenching the blade into water, the uncoverd edge will cool down suddenly, but the rest of blade will cool down slowly. Such differential temperature change results in the different hardness of the blade.

So the edge is tough enough to cut, where the back of blade is soft/flexible enough to absorb the impact during cutting. Such quenching process usually will leave beautiful wavy tempered line on the blade, as known as "homon" in Japanese swords term. Only after we confirm, can the changes be done.

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