Fluorine Compounds ans Stainless Steel
Fluorine Compounds ans Stainless Steel
(OP)
Does anyone have references which detail the problems of austenitic stainless steels and fluorine compounds?
I have an aluminum smelter client who was attempting to change from carbon steel to austenitic stainless for a gas scrubber from the anode bake ovens. The gas contains all sorts of nasties like HF (and other fluoride compounds), SO2, NOx, CO2 and is at a temperature of minimum 150C.
My immediate thoughts were internal Stress corrosion cracking and general corrosion with the possibility of external stress corrosion cracking under insulation.
I have to prove that the combination of flouride compounds would probably cause stress coorrosion cracking internally.
By the way, the original carbon steel scrubber was 25 years old.
I have an aluminum smelter client who was attempting to change from carbon steel to austenitic stainless for a gas scrubber from the anode bake ovens. The gas contains all sorts of nasties like HF (and other fluoride compounds), SO2, NOx, CO2 and is at a temperature of minimum 150C.
My immediate thoughts were internal Stress corrosion cracking and general corrosion with the possibility of external stress corrosion cracking under insulation.
I have to prove that the combination of flouride compounds would probably cause stress coorrosion cracking internally.
By the way, the original carbon steel scrubber was 25 years old.





RE: Fluorine Compounds ans Stainless Steel
Off hand I like your gut feel, go back with CS. In fact if you find a grade with just a little bit of Cr you may even do better.
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