do you want to forge your blade or grind to shape?
find some oil hardening steel in your area O1, 5160, 10xx, L6, or decide to send out the blade if it needs a more complex Heat treat- A2, most stainless steels etc. A full tang design is easy and strong so that will probably be your best bet. What steel you use will determine the heat treat so we cant help you yet. Have fun!:thumbup: