NA 145

DIN Standards Committee Technology of Materials

Project

Hardmetals - Palmqvist toughness test (ISO/DIS 28079:2024)

Abstract

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.

Begin

2022-12-12

WI

CSM11124

Planned document number

prEN ISO 28079

Responsible national committee

NA 145-01-06 AA - Powder metallurgy  

Responsible european committee

CEN/BT - BT Technical Board  

Contact

Stephanie Terbrack

Am DIN-Platz, Burggrafenstr. 6
10787 Berlin

Tel.: +49 30 2601-2423
Fax: +49 30 2601-42423

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