Atlanta Cutlery has two different Katana
blades for sell :
one is a hand forged carbon steel-$44 approx.
the other is of Damascus steel-$240 approx.
These blades are made in India and are tempered.
Their web site is
www.atlantacutlery.com
I bought the $44 carbon steel blade and attached
a handle. I use it to practice with and have
cut a few mulberry limbs up to approx. 3/4-1"
diameter with it, results were ok, comparable to
a machete. The steel in the
blade seems tough enough, but is only so-so
as far as edge retention goes. The only thing I
can compare it to would be my machetes.
This might be a good way to go for a "beater"
sword to practice with for not to much money.
Hope this is helpful.