NF EN ISO 4498

NF EN ISO 4498

August 2010
Standard Current

Sintered metal materials, excluding hardmetals - Determination of apparent hardness and microhardness

ISO 4498:2010 specifies methods of hardness testing of sintered metal materials, excluding hardmetals.Procedure 1 determines the apparent hardness of the whole material.Procedure 1applies to sintered metal materials which have either not been subjected to any heat treatment, or which have been heat treated in such a way that the hardness is essentially uniform to a depth of at least 5 mm below the surface,applies to the surfaces of sintered metal materials which have been treated in such a way that the hardness is not uniform in the section to a depth of 5 mm below the surface, therefore applies to materials in which the hardness is obtained essentially by surface enrichment by carbon, or by carbon and nitrogen (for example, by carburizing, carbonitriding, nitrocarburizing or sulphidizing), andapplies to materials which have been induction hardened.Procedure 2 determines the microhardness of the metal phase.Procedure 2applies to all types of sintered metal materials,is used, in particular, to determine the hardness profile of case‑hardened or carbonitrided materials in accordance with the method described in ISO 4507, andalso applies to any sintered metallic materials which have been subjected to surface treatments such as electrodeposited plating, chemical coating, chemical vapour deposition (CVD), physical vapour deposition (PVD), laser, ion bombardment, etc. To determine the microhardness of treated surfaces, Procedure 2 applies.

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Main informations

Collections

National standards and national normative documents

Publication date

August 2010

Number of pages

20 p.

Reference

NF EN ISO 4498

ICS Codes

77.040.10   Mechanical testing of metals
77.160   Powder metallurgy

Classification index

A95-321

Print number

1 - 05/08/2010

International kinship

ISO 4498:2010

European kinship

EN ISO 4498:2010
Sumary
Sintered metal materials, excluding hardmetals - Determination of apparent hardness and microhardness

ISO 4498:2010 specifies methods of hardness testing of sintered metal materials, excluding hardmetals.

Procedure 1 determines the apparent hardness of the whole material.

Procedure 1

  • applies to sintered metal materials which have either not been subjected to any heat treatment, or which have been heat treated in such a way that the hardness is essentially uniform to a depth of at least 5 mm below the surface,
  • applies to the surfaces of sintered metal materials which have been treated in such a way that the hardness is not uniform in the section to a depth of 5 mm below the surface,
  • therefore applies to materials in which the hardness is obtained essentially by surface enrichment by carbon, or by carbon and nitrogen (for example, by carburizing, carbonitriding, nitrocarburizing or sulphidizing), and
  • applies to materials which have been induction hardened.

Procedure 2 determines the microhardness of the metal phase.

Procedure 2

  • applies to all types of sintered metal materials,
  • is used, in particular, to determine the hardness profile of case‑hardened or carbonitrided materials in accordance with the method described in ISO 4507, and

also applies to any sintered metallic materials which have been subjected to surface treatments such as electrodeposited plating, chemical coating, chemical vapour deposition (CVD), physical vapour deposition (PVD), laser, ion bombardment, etc. To determine the microhardness of treated surfaces, Procedure 2 applies.

Replaced standards (1)
NF EN ISO 4498
February 2008
Standard Cancelled
Sintered metal materials, excluding hardmetals - Determination of apparent hardness and microhardness

Le présent document spécifie les méthodes d'essai de la dureté des matériaux frittés, à l'exclusion des métaux-durs.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Appareillage
    2
  • 4 Échantillonnage et préparation des éprouvettes
    2
  • 5 Méthodes d'essai
    3
  • 5.1 Mode opératoire 1 - Détermination de la dureté apparente
    3
  • 5.2 Mode opératoire 2 - Détermination de la microdureté
    4
  • 6 Expression des résultats
    6
  • 6.1 Dureté apparente
    6
  • 6.2 Microdureté
    6
  • 7 Répétabilité et reproductibilité
    6
  • 7.1 Dureté apparente Vickers
    6
  • 7.2 Dureté apparente Rockwell
    6
  • 7.3 Microdureté Vickers
    6
  • 7.4 Déclaration de fidélité
    6
  • 8 Rapport d'essai
    7
  • Annexe A (normative) Conditions d'essai, charges d'essai ainsi que symboles et désignations pour les valeurs de microdureté
    8
  • Annexe B (informative) Répétabilité et reproductibilité
    10
  • Bibliographie
    12
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