Re: [MW:25243] Pitting corrosion test failure

At 22deg n fr 24hrs

On 12 Aug 2016 7:04 a.m., <nithindsilva4u@gmail.com> wrote:

At what temperature was it carried out..and holding time?

Sent from my iPhone

On Aug 11, 2016, at 02:23, Prasu Cutie <pracuty@gmail.com> wrote:

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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