Can UNS S17400 and S15500 Stainless Steels be Used in Compressors in Sour Environments?

Introduction

If you’re wondering whether wrought UNS S17400 and S15500 martensitic precipitation-hardenable stainless steels can be used in compressors in sour environments, this article has the answer. We’ll be discussing whether these materials comply with NACE MR0175/ISO 15156-3, Table A.30, and what specific environmental limits apply.

Compliance with NACE MR0175/ISO 15156-3, Table A.30

According to our research, UNS S17400 and S15500 stainless steels are acceptable for use in compressors in sour environments without any environmental limits, as per NACE MR0175/ISO 15156 Table A.30.

However, we should note that there is no available data to verify resistance to cracking in the presence of elemental sulfur.

Reference and Update

This question pertains to NACE MR0175/ISO 15156-3 A.8.2, Table A.30, and the reference cited is ISO 15156 Maintenance Panel Inquiry #2003-34.

Lastly, it’s worth noting that there was an update in 2016 concerning NACE MR0175 2015 – Technical Circular 1, which has implications for 17-4 PH. If you require additional details or support regarding 17-4 PH metallurgy or its use as a material for sour environments, feel free to contact our team for assistance.

Conclusion

In conclusion, UNS S17400 and S15500 stainless steels are acceptable for use in compressors in sour environments without any environmental limits according to NACE MR0175/ISO 15156 Table A.30. However, it’s important to note that there is no available data to verify resistance to cracking in the presence of elemental sulfur. If you have any questions or concerns, please don’t hesitate to contact us.