At OGC Energy we help the energy industry with finding answers to some of their most difficult questions. We have created this section hoping that you will find answers to some of the most common questions in the following areas:
If you require technical support in metallurgy, corrosion, or welding; or if you need assistance meeting the requirements of ANSI/NACE MR0175/ISO 15156 then contact our team, we are here to help you.
NACE MR0175/ISO 15156-3 Table A.28 Clarification This page provides clarification on NACE MR0175/ISO 15156-3, Table A.28, which lists “”Internal Components for Valves, Pressure Regulators, and Level Controllers.”” The table also states that “”UNS S17400 … has been used in service tool applications at the surface when stressed at less than 60% of its minimum specified […]
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 […]
Title: Understanding ISO 15156-3 Table A.32: Maximum Temperature for Low H₂S Applications Introduction This page provides an answer to a question concerning the interpretation of ISO 15156-3, Table A.32, particularly the maximum allowed temperature for applications with less than 30 psi partial pressure of H₂S. Understanding ISO 15156-3 Table A.32 The answer states that ISO […]
Can Inconel N07718 be used as a spring material under ISO 15156-3? Understanding ISO 15156-3 Table A.32 and Table A.36 for nickel-based alloys This page provides an answer to a common question regarding the interpretation of ISO 15156-3 Table A.32 and Table A.36 for nickel-based alloys used in springs. The inquiry seeks clarification on whether […]
Does NACE MR0175/ISO 15156 Apply to Springs with Plastic Deformation Criteria? Introduction This page provides an answer to a question regarding the applicability of NACE MR0175/ISO 15156 when designing springs with plastic deformation criteria. Specifically, the question is whether the standard applies when areas of a spring are plastically deformed (not more than 1 or […]
Why is Age-Hardening Required in NACE MR0175 / ISO 15156 for UNS R30003? The Background This page provides an answer to a question concerning the specific demand for age-hardening in NACE MR0175 / ISO 15156, Part 3 for UNS R30003, despite age-hardening typically increasing the material’s hardness. The inquiry seeks to understand whether this is […]
Introduction This page provides an answer to a common question regarding the applicability of NACE MR0175/ISO 15156-3, A.12 to UNS C72900 and C96900 copper alloys. The inquiry asks if these alloys are covered by A.12, which states that copper alloys are suitable for use without restriction other than the note in the footnote. Answer The […]
The Applicability of NACE MR0175/ISO 15156-3 A.13.1 for Corrosion-Resistant Claddings, Linings, and Overlays This page provides a discussion regarding the applicability of NACE MR0175/ISO 15156-3 A.13.1, which is concerned with corrosion-resistant claddings, linings, and overlays. The text addresses questions and provides answers about the compliance of as-deposited filler metal with the UNS composition of the […]
ANSI/NACE MR0175/ISO 15156-3:2009 Annex B, Section B.8 – GHSC Testing for CRA’s Introduction This page provides an answer to a question regarding the interpretation of testing described in ANSI/NACE MR0175/ISO 15156-3:2009 Annex B, Section B.8. The inquiry seeks confirmation on whether GHSC testing is for qualification of CRA’s for H₂S-service by laboratory testing and if […]
Using ASTM A 995 Grade 4A in H₂S-Containing Environments This page includes two questions and answers pertaining to the use of ASTM A 995 Grade 4A (UNS J92205) 22 Cr duplex stainless steel in H₂S-containing environments, based on NACE MR0175/ISO 15156. Question 1: Can ASTM A 995 Grade 4A be used in H₂S environments? Answer […]
