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What is the NACE MR0175 heat treatment?

What is the NACE MR0175 heat treatment?

NACE MR0175 is an international standard that provides the requirements for metallic materials exposed to H2S in oil and gas production environments. These requirements include:

  • Chemistry
  • Heat treatment form
  • Hardness
  • Microstructure (in some cases)
  • HIC resistance.
  • NACE MR0175 has specific heat treatment requirements for carbon steel and low alloy steels, NACE MR0175 also has specific heat treatment requirements for corrosion resistant alloys.

NACE MR0175 defines heat treatment as heating and cooling of a solid metal or alloy in such a way as to obtain desired properties, hot working is not considered heat treatment. Heat treatment is an important requirement that has a direct impact on the metallic material resistance to H2S damaging mechanisms such as sulphide stress cracking (SSC), stress corrosion cracking (SCC) and other related cracking mechanisms.

When a material that does not comply with the NACE MR0175 heat treatment requirement is exposed to H2S, catastrophic failure can take place.

Oil and Gas Corrosion Ltd. has a team of expert metallurgists that can help you identify the NACE MR0175 heat treatment requirements and make sure the materials used in your project comply with these requirements.

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