Sanding belts for steel/iron (2025 Update)

  As my study of blacksmith practices goes on , I find I'm probably going to be doing some metal removal with my belt sander . It's a pretty nice P-C variable speed unit , 3x21 with a dust bag - which I will remove while grinding anything ferrous . I burned more than one bag up while working in the cabinet shops , just takes one unexpected nail . I'm now wondering if the more expensive zirconia belts are that much better than the standard Al oxide belts I use for wood , or if what I have is going to work . ISTR that the ones for wood neither work nor last well when used on steel , but it's been a while and they may have improved since I last used them for that . I'm looking for recommendations ...