[MW:17980] SCC of Stainless Steel in H2S service

Dear All,

 

I require your expert guidance on the below matter.

 

As we all know SS matl is prone to SCC (Stress corrosion cracking) in presence of Chlorides.

Now, as per various articles on the net, when this matl is additionally subjected to wet H2S service, the damage due to SCC is increased significantly.

 

So susceptibility of SS to SCC, is more in wet H2S /Sour service.

 

Can anyone put a light on this subject, as to why/how this happens?

 

Regards

Avinash

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