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Fatigue of Stainless Steel Components: Toward Codified Rules Improvements

[+] Author Affiliations
Claude Faidy

AFCEN - Consultant Engineer, Tassin, France

Paper No. ICONE21-16379, pp. V003T07A019; 7 pages
  • 2013 21st International Conference on Nuclear Engineering
  • Volume 3: Nuclear Safety and Security; Codes, Standards, Licensing and Regulatory Issues; Computational Fluid Dynamics and Coupled Codes
  • Chengdu, China, July 29–August 2, 2013
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5580-5
  • Copyright © 2013 by ASME


During the past 30 years many fatigue tests and fatigue analysis improvements have been developed in France in order to improve Codified Fatigue Rules of RCC-M, RSE-M and RCC-MRx.

This paper will present comments and proposals for development of these rules associated to Gaps and Needs in order to finalize and justify the AFCEN Codes new rules.

Recently 3 new international R&D results confirm possible un-conservative fatigue material data:

- High cycle fatigue in air for stainless steel,

- Environmental effects on fatigue S-N curve for all materials, and in particular stainless steels,

- Fatigue Crack Growth law under PWR environment for stainless steel.

In front of these new results, AFCEN is working on a 1st set of rules based on existing knowledge:

- Air fatigue curve

- PWR Environmental effects

A periodic up-dating of AFCEN proposed rules will be done using French and International R&D programs with a particular attention on harmonization with other Code rules developed in USA, Japan and Germany, in particular.

Copyright © 2013 by ASME



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