Re: [MW:34367] IGC Testing requirement in SS410S.

Dear Ronak :

Austenitic steels ( non L grade) are typically prone to sensitisation when subjected to temperature range of say 400 to 800 mdeg C and remained for a sufficient time at this temperature . Chrome and carbon present in IGSCC plays a major role .    

On Tue, 20 Jun 2023 at 08:47, Ronak Patel <patelronak447@gmail.com> wrote:

Dear Experts ,

We are using SS410S CLAD in Coke Drum at 450 degree temp.

Is IGC test required for SS410S material ? at present there is no requirement of IGC testing for SS410S in coke drum cladding in industry .

 As per my understanding, IGC happens in ferritic SS as well if they are exposed to high temp(450 in my case) in operation , welding or PWHT. So why SS410S is not tested for IGC as per A763 ?

How IGC is different in ferritic SS than in Austenitic SS ?

Thanks and Regards,

Ronak Patel.

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