Although expensive, I have a hunch the In does stand for Indium which might have been added in trace amounts for authentication purposes of INFI steel during an assay.
The F and i is open to me, as obviously Fe is iron and anything else fitting i on the periodic table like Iodine etc,doesn't look plausible,so maybe the fi just completes the short tag for infinity, if that universal symbol is listed on one of his blades. Hopefully, we'll find out eventually sometime soon if Jerry can get a lick of time away from those grinders and order backlog. I am dying to know. I also expect to see some molybdenum,vanadium,chromium,nickel,tungsten,and maybe cobalt thrown in .
Cobalt(the member) and Rj Martin. Care to venture a guess before INFI's official metallurgical composition is released?
Stay safe and all the best , Phil <-------<