Abstract

This document specifies a method for measuring the Palmqvist toughness of hardmetals and cermets at room temperature by an indentation method. This document 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 this document are intended for use at ambient temperatures, but can be extended to higher or lower temperatures by agreement. The test procedures proposed in this document are also intended for use in a normal laboratoryair environment. They are not intended for use in corrosive environments, such as strong acids or seawater.

Begin

2023-01-02

WI

CSM11124

Planned document number

DIN EN ISO 28079

Project number

14500226

Responsible national committee

NA 145-01-06 AA - Powder metallurgy  

Responsible european committee

CEN/BT - BT Technical Board  

Responsible international committee

ISO/TC 119/SC 4 - Sampling and testing methods for hardmetals  

draft standard

Hardmetals - Palmqvist toughness test (ISO/DIS 28079:2024); German and English version prEN ISO 28079:2024
2024-08
Order from DIN Media