thanks Zwiefel, when I went to that thread, I only saw leather, any felt?
Some stainless steels: AEB-L, CPM154, XHP
Some carbon steels: 52100, 1054, White #1 or #2, Blue #1 or #2, Super Blue
If you can go to the store then go and check them out, they seem to have a good selection.
FWIW, I have a 210 Takamura Hana and it is possibly
Too many variables , heat treatment , geometry , what is the intended purpose of the blade , what is sharp for you ?? It may be different than my description
It's actually not bad advice!
I would definitely try to learn some Japanese. A lot of the J knife vendors have a decent understanding of the language.