Projet
Norme internationale
ISO/DIS 28079
Métaux-durs — Essai de ténacité de Palmqvist
Numéro de référence
ISO/DIS 28079
Edition 2
Projet Norme internationale
Prévisualiser
ISO/DIS 28079
85769
Projet de Norme internationale au stade enquête auprès des membres de l’ISO.
Remplacera ISO 28079:2009

ISO/DIS 28079

ISO/DIS 28079
85769
Langue
Format
CHF 63
Convertir les francs suisses (CHF) dans une autre devise

Résumé

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.

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