Norm

NEN-ISO 28079:2009 en

Hardmetalen - Palmquist taaiheidsbeproeving

52,53

Over deze norm

Status Definitief
Aantal pagina's 11
Commissie Metalen algemeen
Gepubliceerd op 01-07-2009
Taal Engels
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.

Details

ICS-code 77.040.10
77.160
Nederlandse titel Hardmetalen - Palmquist taaiheidsbeproeving
Engelse titel Hardmetals - Palmqvist toughness test

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