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Katana 16th or 17th century.

Katana is a Japanese long sword used mainly by samurai warriors. It is the most important sword of the three swords worn by samurai: katana, wakizashi, and tanto. The katana was popular from 1400 A.D. until 1876, when the samurai disappeared as a social class.

In Japanese, "katana" means a long sword and it represents a blade, which is a little curved, with a single edge and a very sharp point.


There are several types of katanas:

  • Artwork/old katana - Nihonto
  • sharpened katana - Shinsaku, Shinken
  • Modern katana designed for the training of iaido and iaijutsu - Iaito
  • Decorative, ceremonial katanas.

Forging and polishing

A traditional katana is made of a type of high carbon steel called tamahagane, which is made by smelting a type of Japanese iron ore, called iron sand, in a large furnace called a tatara.

This steel is sent to a smith who breaks it down to small pieces and layers the steel according to carbon content, they smelt this in their forge and repeatedly fold the steel in order to homogenise it. The most important part of the forging is the tempering, when the sword is quench-hardened, in ancient times it was said that the soul of the sword was imbued into the katana at this point. The sword is sometimes given a rough polish by the smith and then sent to a professional polisher for polishing(usually to a mirror polish). After to polishing the sword to be fitted.

Today katanas are mainly made of carbon steel of different quality. But there are some swords made of zinc and aluminum alloys, which are able to resist some external forces and are only used for decoration or non-tameshigiri practice. To determine the quality of a katana it is enough to check its resistance (how much it bends when it is hit), elasticity (the ability of katana to return to its original shape), and endurance (how long it lasts) of the blade after striking.

Generally, katana is designed for cutting, but it was widely used for stabbing too. This depended mainly on the length of the hilt (the handle). The katana could be easily used for cutting if it was made for using with both hands. It was used for stabbing when the katana was made for using with one hand. As a rule, katana was worn by the belt with its blade up.[1]

Katana and the Japanese traditions

Katana was very important in Japanese society. This sword was thought to be the "soul" of its master. Only a samurai was allowed to have a katana. A simple man with a katana sword could be killed at once.

There was a tradition of wearing, taking care and taking the katana out of its scabbard (the cover of a sword or a knife). A samurai had to pay attention to the way he wore the katana when entering someone's house. A certain position in which a samurai has taken his sword out of the cover could be understood as aggression.

It was also important the way a samurai keeps his katana on a special stand for swords, called katana-kake. This stand was used for both katana and wakizashi. The blade had to have its point up, just as when wearing the sword; the handle (called hilt) had to be turned to the left. This made katana available for handling any time it was needed.

The art of handling a katana was developed in martial arts like kenjutsu and iaijutsu. Today, this art is practiced in iaido and kendo martial arts. The last one is the art of dueling with bamboo or wooden sword. Old schools of handling katana swords still exist. The most famous are: Kashima Shin-ryu, Kashima Shinto-ryu, Tenshin Shoden Katori Shinto-ryu.

The most appreciated technique of handling a katana is a school called Nitto Ryu. This school taught how to use both a katana and a wakizashi during a fight. The most famous samurai who improved this art was Miyamoto Musashi.


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