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NACE & Sour service?

NACE & Sour service?

NACE & Sour service?

(OP)
Hi everyone,

Need some help here. why a material listed in NACE may not be good for all sour service environments ?.

Thnx

RE: NACE & Sour service?

NACE MR0175-2003 lists materials resistant to sulfide and stress-corrosion cracking resistance.  The susceptibility of many materials to environmentally-assisted cracking varies with the environment.  For example, many common stainless steels will stress-corrosion crack at higher temperatures in the presence of chlorides.  NACE MR0175-2003 therefore specifies an upper temperature limit for these alloys in the oilfield.

Likewise MR0175 only addresses environmentally-assisted cracking.  In many oilfield environments (wet carbon dioxide, etc.), carbon steel will corrode rapidly, regardless of whether it has been neat-treated to the proper hardness for sulfide-stress cracking resistance.

Mike

RE: NACE & Sour service?

(OP)
Cheers mike

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