The nominal composition (wt. %) of this classification is 22.5 Cr, 8.5 Ni, 3 Mo, 0.15 N. Primarily to weld duplex stainless steels which contain approximately 22 percent chromium
These alloys are finding widening
application in the offshore oil/gas,
chemical and petro-chemical process
industries for their good resistance to
stress corrosion cracking and pitting
corrosion with typical pitting resistance
equivalent number (PREN) of 35-36. The
weld metal poses a high tensile and yield
strength.
Deposits of this alloy have “duplex” microstructures consisting of an austenite-ferrite matrix.
