Development of Heat-Affected Zone Hardness Limits for In-Service Welding

The objective of this project was to develop heat-affected zone hardness acceptance criteria that can be used to evaluate welds during the qualification of procedures for welding onto in-service pipelines. A series of graphs was developed that show proposed maximum-allowable hardness as a function of material chemical composition (carbon content and carbon equivalent or CE level) for a range of thicknesses. In addition, guidance was developed for several issues related to the application of heat-affected zone (HAZ) hardness limits to welds made onto in-service pipelines.


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 150p

Subject/Index Terms

Filing Info

  • Accession Number: 01642843
  • Record Type: Publication
  • Report/Paper Numbers: DOT Project No. 216, ENAUS826BBRUCE, Project No. 82673428
  • Contract Numbers: DTPH56-07-T-000004
  • Created Date: Jul 31 2017 5:26PM