I checked Matweb and McMaster sites and didn't find anything for D9 tool steel. Anyway, some types of stainless will be non-magnetic, others slightly magnetic.
A brief look at Google showed this as one of the quick answers:
"What is D 9 steel? The D9 alloy is a titanium-modified, 316 stainless steel which has provided improved resistance to neutron irradiation induced void swelling as compared with the unmodified 316 stainless steel."
So, 316 stainless should be non-magnetic.
This sounds like something that would be used in nuclear reactors or other nuclear type application.
Incidentally I don't think I would trust any of the technical information found on an Ebay page!
I was thinking I got sent the wrong pry bar, (Maratac makes titanium ones as well) but maybe this is the steel version. Just super light and non magnetic so I was a tad confused. Let’s see if it takes a patina 🤔. Thanks for the input kind sirs.
Edit: zero patina. Pretty sure this thing is titanium.