some useful files on the subject.
On 20 June 2013 12:17, <avinash.araj@gmail.com> wrote:
Dear Sir,Thanks for your reply.I agree that SCC (Stress Corrosion cracking) damage in Stainless steel is multiplied because of STRESS.But my query here is that this SCC effect (because of chloride and stress) is even more damaging in Presence of H2S (sour service).Can you please explain this phenomenon?Following is an extract from NACE MR-0175/ISO-15156 ""stress corrosion cracking SCC
cracking of metal involving anodic processes of localized corrosion and tensile stress (residual and/or applied) in the presence of water and H2S.
NOTE Chlorides and/or oxidants and elevated temperature can increase the susceptibility of metals to this mechanism of attack."RegardsAvinash ArajOn Thursday, June 20, 2013 10:30:31 AM UTC+5:30, Shomenath Bagchi wrote:Simply put, applied stress (stress energy stored in material) aids corrosion and expand small fissures in cracks.
From: "avinas...@gmail.com" <avinas...@gmail.com>Sent: Wednesday, June 19, 2013 4:28 PMSubject: [MW:17980] SCC of Stainless Steel in H2S serviceDear 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?RegardsAvinash--To post to this group, send email to material...@googlegroups.comTo unsubscribe from this group, send email to materials-weld...@googlegroups.comFor more options, visit this group's bolg at http://materials-welding.blogspot.com/The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.---You received this message because you are subscribed to the Google Groups "Materials & Welding" group.To unsubscribe from this group and stop receiving emails from it, send an email to materials-weld...@googlegroups.com.--
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