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ISO 28079:2009

Hardmetals — Palmqvist toughness test ISO 28079:2009

Publication date:   Jul 14, 2009

General information

90.92 Standard to be revised   Oct 7, 2022

ISO

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

International Standard

77.040.10   Mechanical testing of metals | 77.160   Powder metallurgy

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 28079:2009
90.92 Standard to be revised
Oct 7, 2022

REVISED BY

IN_DEVELOPMENT
ISO/CD 28079