NF EN ISO 642

NF EN ISO 642

September 2024
Standard Current

Steel - Hardenability test by end quenching (Jominy test)

This document specifies a method for determining the hardenability of steel by end quenching (Jominy test) by using a test piece 25 mm in diameter and at least 100 mm long.By agreement and for a defined field of application, the test described in this document can be replaced by the calculation of the Jominy curve according to an accepted mathematical model.

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Main informations

Collections

National standards and national normative documents

Publication date

September 2024

Number of pages

32 p.

Reference

NF EN ISO 642

ICS Codes

77.040.99   Other methods of testing of metals

Classification index

A04-303

Print number

1

International kinship

ISO 642:2024

European kinship

EN ISO 642:2024
Sumary
Steel - Hardenability test by end quenching (Jominy test)

This document specifies a method for determining the hardenability of steel by end quenching (Jominy test) by using a test piece 25 mm in diameter and at least 100 mm long.

By agreement and for a defined field of application, the test described in this document can be replaced by the calculation of the Jominy curve according to an accepted mathematical model.

Replaced standards (1)
NF EN ISO 642
October 1999
Standard Cancelled
Steel - Hardenability test by end quenching (Jominy test)

La présente Norme internationale spécifie la méthode de détermination de la trempabilité de l'acier par trempe en bout (essai Jominy), à l'aide d'une éprouvette de 25 mm de diamètre et 100 mm de longueur.NOTE Par accord et pour un domaine donné d'application, l'essai décrit dans la présente Norme internationale peut être remplacé par le calcul de la courbe Jominy conformément à un modèle mathématique accepté (voir annexe C). En cas de litige, l'essai doit être effectué.

Table of contents
  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Symboles et désignations
  • 5 Principe
  • 6 Forme et préparation des éprouvettes
  • 7 Appareillage
  • 8 Chauffage et trempe de l'éprouvette
  • 9 Mesurage de la dureté après trempe
  • 10 Expression des résultats
  • 11 Rapport d'essai
  • A Spécification de la trempabilité d'un produit
  • B Informations complémentaires à l'Article
    11
  • C Modèles de calcul pour la détermination de la trempabilité
  • Bibliographie
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