Just wanted to let you guys know, I have used since used the atp on some ats-34, and some 1080, the 1080 I had no scale at all to remove but it was slightly discolored, I was able to go straight to 220 and then to finishing the blades. The ats-34 was a little tougher, I think you need about 4 coats for it to be completely effective on preventing decarb, it only takes about 10 minutes per coat to dry(5 if you hang em in the sun or in front of a fan) and I tried 2 coats on the last batch and got a good bit of decarb I had to work out but I have confidence that this stuff will work great if 4 coats are applied(3 would prob do it but Imma use 4). This was heating the steel to 1920f and oil quenching then I immediately put them in dry ice which didnt seem to matter as far as getting the atp off, it came right off with some warm water and a scotch brite pad after the temper cycles were complete. I will keep you guys updated as I have a few ats-34 blades almost ready for HT(prob next week), I dont like doing less than 3 or more at a time as the dry ice aint cheap, lol. I will also get some pics of the next batch...