GSO ISO 28079:2017
Gulf Standard
Current Edition
·
Approved on
03 October 2017
·
Hardmetals -- Palmqvist toughness test
GSO ISO 28079:2017 Files
English
11 Pages
Current Edition
Reference Language
27.14 BHD
GSO ISO 28079:2017 Scope
This International Standard specifies a method for measuring the Palmqvist toughness of hardmetals and cermets at room temperature by an indentation method. This International Standard 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 International Standard are intended for use at ambient temperatures, but can be extended to higher or lower temperatures by agreement. The test procedures proposed in this International Standard 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.
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