Dear experts,
We had pittng corrosion failure in duplex stainless steel 2205
Process: GTAW
Thk: 7.62mm
Filler: ER2209
Product: pipe
Heat input observed: 1.5 to 2.5kj
Gas: argon 99.9997purity
Weight loss reqd is <4g/sq.mtr, achieved 21g/sq.mtr
Testing is done as per ASTM G48
Can any one tell me why this failure occured, what could be the reason?
Regards
Prasad
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