A283 Grade D material suitability in sour service
A283 Grade D material suitability in sour service
(OP)
Please suggest if A283 Gr D can be used in sour service. do you think A283 Gr D plates would pass HIC test? Can we allow this material as compressor diaphragm when it handles sour hydrocarbon gas. Can you share your experiences with such matter? I have heard people arguing that diaphragm is not a pressure containing part so NACE does not apply. thanks





RE: A283 Grade D material suitability in sour service
RE: A283 Grade D material suitability in sour service
With regard to the question of HIC testing, off the shelf material would be unlikely to pass a HIC test with the acceptance criteria of ISO 15156-2. Even if it does, it is still not a reliable result since the steel manaufacturing process will not have been geared towards maximising performance in H2S environments. Technically, it would be classed as "pseudo-HIC." However, is a HIC failure in a diaphragm unacceptable?
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: A283 Grade D material suitability in sour service