Is NACE applicable for stainless steel?

NACE MR 0175/ISO 15156 is a Materials Standard issued by the National Association of Corrosion Engineers. The standard specifies the types of corrosion resistant materials including stainless steels that can be used in specific oilfield environments and places limits on the hardness of the material.

What does NACE compliant mean?

A NACE MR0175 compliant material (sometimes inaccurately referred to as NACE material or NACE piping) is a material that meets all the requirements of NACE MR0175 and can be used in H2S environments within the limits set by the standard.

Is 316L NACE compliant?

Swagelok fluid system components made from either 316/316L or special alloys are available as products which meet the requirements of the NACE MR0175/ISO 15156 sour gas standard.

What is the NACE temperature limit for 316 stainless steels?

As such, the proposed rewrite included maximum temperature limits for all materials that are susceptible to chloride SCC. For example, the rewrite proposed that the temperature limit for S31600 (type 316 stainless steel) be set at 60°C (140°F) maximum.

What are the NACE standards for austenitic stainless steel?

MR0103 defines acceptable austenitic stainless steel grades using a chemical composition range rather than listing each individual alloy, similar to MR0175-2003. MR0103 allows stainless steels with 0.10% maximum carbon to cover the high-temperature grades.

What does it mean to be a Nace compliant product?

A ‘NACE compliant’ product, really meaning one that is compliant to NACE MR0175, is one that meets the requirements of NACE MR0175 and therefore can be considered for sour service environments within the set operational limits.

Can a 316 steel bar be compliant with NACE?

I agree with SJones, one thing is a material compliant with NACE requirements (hardness, heat treatments) the other things are the NACE limits for that particular materials. You can have a 316 fully compliants with NACE but that is used above the NACE limits, example 60°C or partial pressure of H2S above 1 bar..) and so on.

What are the hardness requirements for NACE MR0175?

As these materials are supplied in the solution annealed condition, they satisfy the requirements of Table A.8. MR0175 does not require a hardness to be reported for annealed material. These materials also satisfy the requirements of MR0103, paragraph 2.7.1 provided the reported hardness is at or below Rockwell C 35.