[MW:20917] Re: Welding of SS 304H to P-91

Dear Sir

As per literature cited by me especially Nickel Development Institute, I fully agree that Er NiCr3 is the best filler wire, however as per EIL Specification we are using ER309 as filler and E309-15/16 as electrode, with Preheating of 205 deg C and PWHT (732-760 deg C). what are the probable problems that can be associated with selecting this filler, as it is a well know fact that DMW for P-91 are one of the probable causes of failure. Kindly guide me with respective to literatures available

regards

Arunabh 
Engineers India Limited

On Tuesday, May 27, 2014 4:42:10 PM UTC+5:30, ARUNABH BERA wrote:

Dear All

Kindly clarify the doubts:

Sir in Ethylene Cracker Furnace at one of the Petrochemical Plant, we have a hook-up between P-91 and SS304H. Here we are using ER309 as the filler.

Is it acceptable, if not what can be the probable problems associated with the filler selection and what are the solutions 

Regards

Arunabh

Engineers India Limited

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