Damascus Steel which is made from wootz steel is the best for swords. Created in India these swords are legendary. Some swords are said to be able to cut through a rifle barrel. Resent science has found that carbon nano tubes is what gives these swords their characteristics. The only problem is that the technique used for making these swords is lost, though with modern technology an advanced steels, we can manufacture even better swords. I've been researching ideas behind compressed carbon tubing which is said to be harder and sharper than diamonds. Applying this with other polymers/steels through heat and compression, I believe this would yield the ultimate swords. Although, there would be the need of trail by error to get the formula just right. This would also be very expensive, but such a sword, if possible, would be priceless.
