[header] How to judge the quality of a katana sword [title] Check the steel. [step] An authentic ancient blade of a katana sword will never be a stainless steel but if it is, then surely it is made by modern methods. Such swords you can only use it as decor item and nothing else. 
Hence it is necessary to check the quality of the steel used to make any katana sword. [title] Check for the appropriate angle of the blade.