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Hydrogen Assisted Fracture of Type 316 Stainless Steel at Sub-Ambient Temperature

[+] Author Affiliations
C. San Marchi, B. P. Somerday

Sandia National Laboratories, Livermore, CA

X. Tang, G. H. Schiroky

Swagelok Company, Solon, OH

Paper No. PVP2008-61240, pp. 191-199; 9 pages
  • ASME 2008 Pressure Vessels and Piping Conference
  • Volume 6: Materials and Fabrication, Parts A and B
  • Chicago, Illinois, USA, July 27–31, 2008
  • Conference Sponsors: Pressure Vessels and Piping
  • ISBN: 978-0-7918-4829-6
  • Copyright © 2008 by ASME and Swagelok Company


Applications requiring the containment and transport of hydrogen gas at pressures greater than 70 MPa are anticipated in the evolving hydrogen economy infrastructure. Since hydrogen is known to alter the mechanical properties of materials, data are needed to guide the selection of materials for structural components. Type 316 austenitic stainless steels are often considered one of the best choices for resistance to hydrogen-assisted fracture; however, at sub-ambient temperatures some alloy compositions of type 316 stainless steel can become more susceptible to hydrogen-assisted fracture than others. In this study, we report the tensile properties of two heats of type 316 stainless steel, emphasizing the effects of temperature and high concentrations of internal hydrogen on these properties.

Copyright © 2008 by ASME and Swagelok Company



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