Steam Corrosion on piping & CF8M castings

[Salzilla]

Application is papermaker.
Low Pressure Steam is not corrosive to the steam piping [mild steel] or the paper machines dryer cans [cast iron].
Why is steam so corrosive to our CF8M electropolished castings? [very serious corrosion]
Even the SS316L polished shaft is very corroded - why?
Could the reason be because our castings are exposed to air,steam, and condensate?
The dryer cans and piping are not exposed to air but do have condensate.

Salzilla

 

[EdStainless]

All of the impurities will be concentrated in the condensate.

What type of corrosion are you seeing?

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