Abstract

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ISO 28079:2009 specifies a method for measuring the Palmqvist toughness of hardmetals and cermets at room temperature by an indentation method. ISO 28079:2009 applies to a measurement of toughness, called Palmqvist toughness, calculated from the total length of cracks emanating from the corners of a Vickers hardness indentation, and it is intended for use with metal-bonded carbides and carbonitrides (normally called hardmetals, cermets or cemented carbides). The test procedures proposed in ISO 28079:2009 are intended for use at ambient temperatures, but can be extended to higher or lower temperatures by agreement. The test procedures proposed in ISO 28079:2009 are also intended for use in a normal laboratory-air environment. They are not intended for use in corrosive environments, such as strong acids or seawater.


General information 

  • Status
     : Published
    Publication date
     : 2009-07
  • Edition
     : 1
    Number of pages
     : 11
  • Technical Committee
     : ISO/TC 119/SC 4 Sampling and testing methods for hardmetals
  • ICS
     :
    77.160 Powder metallurgy
    77.040.10 Mechanical testing of metals

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