Wednesday, March 17, 2021

[MW:32066] Nitrid Precipitation in Duplex SS (ISO 17781 QLll)

Hi All,

Could you please advise,
If during micro-structural analyse  it were observed Nitrid Precipitates , how need to evaluate test results (mechanical test was done according ISO17781 QL 2)
I want to note that, Specimens were taken for WPQT of Duplex SS, MDT is -25Celsius
PQT coupon dimensions are WT=18mm OD=168.3mm.
Corrosion test results are acceptable ,There was no observed any pittings & Charpy V test results are acceptable (@-46celsius)


Regards, 
Ilkin Hasanov.

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