Folded steel katana blade is made using Shita-kitae folding technique. During forging, steel is folded and forged welded in order to produce a prominent forging pattern. This method is not necessary when using modern steel, but it adds to the aesthetics of the blade. Folded steel katana blade is made out of high carbon steel, which is clay tempered and polished and available for customization. You can select a wide variety of fittings, tsuba, fuchi, kasira, habaki, saya color, and tsuka wrap styles to make this sword uniquely yours.