Tell us about yourself!
I will concede to your superior metallurgical knowledge on this.I have an 8" nail that I beat to a pulp with a ball pein hammer, edged with a file, hardened in my kitchen stove and sink, then honed on a whetstone.It's been an amazingly useful and resilient tool, but I cannot speak of its carbon content nor its origin.
You can still easily harden it if you want to, and it's probably worthwhile doing. Steel has pretty poor thermal conductivity so you can heat the tip in a gas flame (propane, stove, etc) until it's glowing as hot as you can get it. If you do it reasonably quickly, you won't even melt your epoxy. Then plunge it into some cold oil.It's not 100% but it'll make a difference.You can touch up the hardened tip on a stone.