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NACE MR0103 PDF Free Download - A Guide to the Standard for Materials Resistant to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments

NACE MR0103 is a standard that specifies the requirements for metallic materials that are resistant to sulfide stress cracking (SSC) in corrosive petroleum refining environments. SSC is a form of hydrogen embrittlement that can cause cracking and failure of metals exposed to hydrogen sulfide (H2S) and other sour gases. SSC can occur in various parts of the refining process, such as hydrocracking, hydrotreating, sour water stripping, amine treating, and sulfur recovery units.

The standard was developed by NACE International, a professional association for corrosion engineers and experts. It was originally prepared in 2003 and has been revised several times since then. The latest edition is ANSI/NACE MR0103/ISO 17945:2015, which is also an International Standard adopted by the International Organization for Standardization (ISO).


The standard covers the selection and qualification of carbon steels, low-alloy steels, stainless steels, cast irons, and ductile irons for use in equipment and piping that are in contact with aqueous (water-containing) environments containing H2S or both H2S and carbon dioxide (CO2). It also provides guidelines for welding, heat treatment, testing, inspection, and quality control of these materials.

The standard is intended to help prevent SSC failures and improve the safety and reliability of petroleum refining facilities. It is also useful for other industries that deal with sour gas environments, such as natural gas production and processing, petrochemicals, and power generation.

How to Download NACE MR0103 PDF for Free?

If you are looking for a free download of NACE MR0103 PDF, you may be disappointed to find out that the standard is not available for free online. The standard is a copyrighted document that is protected by ISO and NACE. You cannot legally reproduce, distribute, or use it without their permission.

However, there are some ways to access the standard without paying the full price. Here are some options:

  • You can purchase a copy of the standard from the NACE International . The price for a PDF download is $185 for NACE members and $231 for non-members. You can also order a printed copy or a CD-ROM version.

  • You can join NACE International as a member and enjoy discounts on their publications and other benefits. The annual membership fee ranges from $25 to $175 depending on your category and location. You can find more information on how to join .

  • You can borrow a copy of the standard from a library or a colleague who has purchased it. You can search for libraries that have the standard in their collection using , a global catalog of library materials. You can also ask your friends or coworkers who work in the corrosion field if they have a copy that they can lend you.

  • You can preview some pages of the standard online using the ANSI . You can view the table of contents, the foreword, the introduction, and some sections of the standard for free. However, you cannot download or print the preview pages.

  • You can read some documents that summarize or reference the standard online. For example, you can find a presentation on NACE MR0103 by NACE International .

These options may help you get some information about NACE MR0103, but they are not substitutes for reading the full standard. If you need to use the standard for your work or study, you should consider purchasing it from NACE International or joining their organization.


NACE MR0103 is a standard that specifies the requirements for materials resistant to SSC in corrosive petroleum refining environments. It is an important document for corrosion professionals and engineers who work in the refining industry or other sour gas applications. The standard is not available for free online, but you can purchase it from NACE International or access it through other means.

We hope this article has helped you understand what NACE MR0103 is and how to download it for free. If you have any questions or comments, please feel free to leave them below.


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