I always read what Pete Ulintz writes. His September 2018 article in Metalforming Magazine discusses tooling wear when forming stainless and aluminum. A few additional comments from my experience:
A) Your metal supplier may be able to provide you coils with the PE/PVC coating already applied.
B) You might need to adjust your forming approach. I’ve worked with parts where the polymer coating was ripped off when going through the draw beads and that balled up dirt restricted metal flow.
C) D2 is usually a bad choice for forming stainless steels into parts with even moderate complexity. Chromium in D2 + Chromium in stainless steel = galling.
Pete’s also one of the best speakers/teachers that’s out there. If you find him on the schedule of a PMA conference, I’d recommend attending!