Have you heard of the 2205 failures in FGD units?

Rolled Alloys has completed a full corrosion study comparing 2205 to ZERON 100, AL-6XN and C-276 in typical FGD service.

You may or may not be familiar with Flue Gas Desulfurization or the issues concerning 2205.  In recent years there have been a number of corrosion problems with 2205 duplex stainless steel in the scrubbers behind power plants and other waste gas exhaust.  There are still many investigations ongoing to determine why these issues have surfaced.  In the meantime, these issues have pushed people away from specifying 2205 or any other duplex grade even if it may be suitable for service.  In fact, most of the time it is not necessary to even use very high nickel-chrome-moly alloys.  

To answer these types of questions Roger Francis in Rolled Alloys office in Blackburn, UK has done some extensive corrosion studies to show how 2205 compares to ZERON 100, AL-6XN and C-276.  It turns out that ZERON 100 and AL-6XN provide a significant advantage over 2205 and are often very suitable for service in FGD applications.