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How long does it take for sulfide stress cracking to occur?

asked Jun 25, 2014 in Process by anashi (710 points)
What are the conditions for sulfide stress cracking and if the conditions are present how long does it take to occur?

1 Answer

+1 vote
answered Jun 25, 2014 by odadmin (21,030 points) | selected Jun 25, 2014 by anashi
 
Best answer

The answer to the first part of your question can be found here:

http://www.ognition.com/8/sulfide-stress-cracking

 

Answer to the second part:

If all the conditions required are present, it will still take come period of time for the sulfide stress cracking to occur. This depends on the following factors:

  • Stress Level – higher the stress, lower the time to failure
  • Hardness of the steel – higher the hardness, lower the time to failure.
  • Hydrogen sulfide concentration – higher the concentration, lower the time to failure.
  • pH of the fluid – lower the pH, lower the time to failure.
  • Temperature -at ambient conditions, lower the time to failure, above 150 ºF the chances of failure decreases.
commented Jun 25, 2014 by anashi (710 points)
Thanks Odadmin for the quick answer.
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