Sulfide Stress Cracking Resistant Metallic Materials for Oilfield Equipment

NACE MR0175/ ISO 15156-1

This standard specifies the requirements for the resistance of metal materials to sulfide stress cracking (SSC) when petroleum extraction, drilling, gathering and transportation pipelines, and oilfield processing equipment are used in hydrocarbon media containing hydrogen sulfide (H2S).

This standard applies to materials and/or equipment specified by the Material Standards Society (or equivalent standards or specifications of other organizations) listed below:

1. Aerospace Material Specification (AMS); Society of Automotive Engineers (SAE), 400 Commonwealth Drive, Warrendale, PA 15096

2. American Iron and Steel Institute (AISI), 1133 15 * St. NW, Washington, DC 2005-2701

3. American National Standards Institute (ANSI), 11 West 42n St., New York, NY 10036

4. American Petroleum Institute (API), 1220 L St. NW, Washington, DC 2005

5. American Society of Mechanical Engineers (ASME), Three Park Ave, New York, NY 10016-5990

6. American Society for Testing and Materials (ASTM), 100 Bam Harbor Dr. West Conshohocken, PA 19428-2959

7. American Welding Society (AWS), P.O.Box 251040, Miami, FL 33126

8. British Standards Institution (BSI), 2 Park St, London W 1A 2BS, England

9. Canadian Standards Association (CSA), 178 Rexdale BIvd, Toronto, Ontanio, Canada M9W 1R3

10. German Institute for Standardization (DIN), Postach 1107, D.1000 Berin 30, Federal Republic of Gemmany

11. Gold alloys and alloys (UNS) in the Unified Numbering System, jointly published by the American Society for Testing and Materials and the Society of Automotive Engineers, 400 Commonwealth Dr, Warrendale, PA 15096

The NACE standard material focuses on the general issue of metal sulfide stress cracking, with a particular emphasis on the petroleum and natural gas industry. This standard is intended for use by oil and gas companies, manufacturers, engineers, and purchasers, and is applicable to the requirements of metal materials for oil and gas media in acidic gas environments. Many of the guidelines and regulatory requirements in this standard are based on field experience when the listed materials are used in specific components, and the materials may also be applicable to other components used in the petroleum extraction industry or other industries.

This standard applies to all equipment components exposed to acidic environments, where the fire effects caused by sulfide stress cracking (SSC) can: (1) hinder equipment that is still under pressure from returning to operation, (2) endanger the integrity of the pressure bearing system, and/or (3) hinder equipment from performing its basic functions. The material selection for water treatment equipment, such as pumping rods and underground pumps, under atmospheric pressure and low-pressure systems is not within the scope of this standard, but is elaborated in detail in other international standards and API documents of NACE.

The following listed materials are non-ferrous materials that can be directly exposed to acidic environments: