Introduction This is an update to our previous blog on cracking of refinery hydroprocessing REACs made of duplex stainless steel:  View Original Post 2205 DSS (UNS S31803 or S32205) has been used in refinery hydroprocessing unit reactor effluent air coolers (REACs) since the mid 1980’s (1).  2205 was selected due to its good resistance to ammonium […]