A CVN-KIC correlation for H13 tool steels

S. Z. Qamar, A. K. Sheikh, A. F.M. Arif

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Fracture is the most common cause of die failure in hot extrusion. Prediction of fracture life requires a reasonably accurate determination of plane-strain fracture toughness (KIC). Standard KIC testing is difficult, time-consuming, and costly. Charpy impact energy (CVN) is often used as an indirect measure of fracture toughness. Published CVN-K IC correlations do not generally apply to tool steels, and are not suitable for high temperature predictions. This paper is part of a study aimed at the development of a reasonable CVN-KIC correlation for the hot work tool steel H13, subjected to various tempering cycles and tested at different elevated temperatures, based on hardness and impact energy data.

Original languageEnglish
Pages (from-to)421-432
Number of pages12
JournalInternational Journal of Materials and Product Technology
Issue number4
Publication statusPublished - 2008


  • CVN-K correlations
  • Charpy impact energy (CVN)
  • Fracture toughness (K ) prediction
  • H13 steel
  • Hardness rockwell scale C (HRC)
  • Hot extrusion
  • Hot work tool steels

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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