NF EN ISO 945-1

NF EN ISO 945-1

May 2009
Standard Cancelled

Microstructure of cast irons - Part 1 : graphite classification by visual analysis

ISO 945-1:2008 specifies a method of classifying the microstructure of graphite in cast irons by comparative visual analysis.The purpose of this part of ISO 945 is to provide information about the method of graphite classification. It is not intended to give information on the suitability of cast-iron types and grades for any particular application.The particular material grade is specified by results from tensile tests or hardness testing and, in the case of austenitic cast irons, by their chemical composition. The interpretation of graphite form and size does not allow a statistically valid statement on the fulfilment of the requirements specified in the relevant material standard. The structure of the metallic matrix (e.g. ferrite, pearlite) has a significant effect on the material properties. Such an interpretation is not the purpose of this part of ISO 945.

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Main informations

Collections

National standards and national normative documents

Publication date

May 2009

Number of pages

30 p.

Reference

NF EN ISO 945-1

ICS Codes

77.080.10   Irons

Classification index

A32-100-1

Print number

2 - 01/05/2010

International kinship

ISO 945-1:2008

European kinship

EN ISO 945-1:2008
Sumary
Microstructure of cast irons - Part 1 : graphite classification by visual analysis

ISO 945-1:2008 specifies a method of classifying the microstructure of graphite in cast irons by comparative visual analysis.

The purpose of this part of ISO 945 is to provide information about the method of graphite classification. It is not intended to give information on the suitability of cast-iron types and grades for any particular application.

The particular material grade is specified by results from tensile tests or hardness testing and, in the case of austenitic cast irons, by their chemical composition. The interpretation of graphite form and size does not allow a statistically valid statement on the fulfilment of the requirements specified in the relevant material standard. The structure of the metallic matrix (e.g. ferrite, pearlite) has a significant effect on the material properties. Such an interpretation is not the purpose of this part of ISO 945.

Standard replaced by (1)
NF EN ISO 945-1
February 2018
Standard Cancelled
Microstructure of cast irons - Part 1 : graphite classification by visual analysis

ISO 945-1:2017 specifies a method of classifying the microstructure of graphite in cast irons by comparative visual analysis. The purpose of this document is to provide information about the method of graphite classification. It is not intended to give information on the suitability of cast-iron types and grades for any particular application. The particular material grades are specified mainly by mechanical properties and, in the case of austenitic and abrasion resistant cast irons, by their chemical composition. The interpretation of graphite form and size does not allow a statistically valid statement on the fulfilment of the requirements specified in the relevant material standard.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Généralités
    1
  • 2.1 Système de désignation pour la classification du graphite dans les fontes
    1
  • 2.2 Classification visuelle du graphite
    9
  • 3 Échantillonnage et préparation des échantillons
    10
  • 3.1 Échantillons découpés dans une pièce moulée
    10
  • 3.2 Préparation de l'échantillon
    10
  • 4 Mode opératoire pour la classification du graphite
    10
  • 4.1 Mode opératoire pour la classification visuelle du graphite
    10
  • 4.2 Évaluation des résultats de l'examen
    11
  • 5 Images de référence
    11
  • 5.1 Généralités
    11
  • 5.2 Images de référence pour la forme du graphite
    11
  • 5.3 Images de référence pour la répartition du graphite (forme I)
    11
  • 5.4 Images de référence pour la taille du graphite
    11
  • 6 Désignation du graphite par sa forme, sa répartition et sa taille
    12
  • 6.1 Système de désignation
    12
  • 6.2 Désignation de taille de graphite intermédiaire
    12
  • 6.3 Désignation de microstructures complexes à graphite de formes, répartitions et tailles différentes
    13
  • 6.4 Dénombrement des nodules
    13
  • 7 Rapport
    14
  • Annexe A (informative) Formes typiques du graphite dans les fontes (Exemples de micrographies)
    15
  • Annexe B (informative) Répartition des lamelles de graphite (forme I) (Exemples de micrographies)
    16
  • Annexe C (informative) Terminologie usuelle et principales conditions d'apparition des différents types de graphite dans les fontes
    17
  • Bibliographie
    19
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