Full Content is available to subscribers

Subscribe/Learn More  >

Assessment of SCC Susceptibility of Supermartensitic Stainless Steel Through Slow Strain Rate Tests

[+] Author Affiliations
A. Contreras, M. A. Espinosa-Medina, M. Salazar

Instituto Mexicano del Petróleo, México, DF, México

Paper No. IPC2008-64334, pp. 547-555; 9 pages
  • 2008 7th International Pipeline Conference
  • 2008 7th International Pipeline Conference, Volume 2
  • Calgary, Alberta, Canada, September 29–October 3, 2008
  • Conference Sponsors: International Petroleum Technology Institute and the Pipeline Division
  • ISBN: 978-0-7918-4858-6 | eISBN: 798-0-7918-3835-8
  • Copyright © 2008 by ASME


The 13%Cr supermartensitic stainless steels (SMSS) are a new group used as pipelines for oil and gas transport. The optimized microstructure of these materials offers good corrosion resistance in environments containing CO2 and H2 S. In addition to reducing carbide precipitation, the low carbon content (about 0.01 wt-%) of supermartensitic steels SMSS provides good weldability with conventional arc welding techniques. The susceptibility to stress corrosion cracking (SCC) through slow strain rate tests (SSRT) of SMSS and its comparison with a Hastelloy C-22 in substitute ocean water was carried out. Tests were supplemented by potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS). The SSRT were performed in air and in a chloride solution at 5, 15, 25 and 35°C. The susceptibility to SCC was evaluated considering the reduction in area ratio and time to failure ratio. According to these considerations it is clear that all the specimens tested in the chloride solution exhibited high resistance to chloride SCC. The specimens tested in air exhibited a ductile fracture. In the corrosive solution, the fracture was a combination of both, ductile and brittle fracture with a transgranular appearance. An evident temperature effect on the steel was observed. The major susceptibility to SCC was presented to the lower temperature (5°C). According to EIS evaluations, the corrosion rate increased with the temperature, which promoted an increase in the SCC susceptibility at a low temperature. The corrosion mechanism observed on the material under dynamic stress was a combination of high activation resistivity in combination with a diffusive process on the metallic interface given by a thin film of a protector layer of chromium oxide.

Copyright © 2008 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In