Indisponible en français

Résumé Preview

ISO 13947:2011 specifies a metallographic method for determining the non-metallic inclusion level in metal powders using a powder-forged specimen. The test method covers repress powder-forged test specimens in which there has been minimal lateral flow (< 1 %). The core region of the powder-forged test specimen contains no porosity detectable at 100 ´ magnification.

This test method can also be used to determine the non-metallic inclusion content of powder-forged steel parts. However, in parts where there has been a significant amount of material flow, the near-neighbour separation distance needs to be changed, or the inclusion sizes agreed between the parties need to be adjusted.

This test method is not suitable for determining the non-metallic inclusion level of parts that have been forged such that the core region contains porosity. At the magnification used for this test method, residual porosity is hard to distinguish from inclusions. Too much residual porosity makes a meaningful assessment of the inclusion population impossible.

This test method can be applied to materials that contain manganese suifide (admixed or prealloyed), provided the near-neighbour separation distance is changed from 30 µm to 15 µm.


Informations générales

  • État actuel :  Publiée
    Date de publication : 2011-12
  • Edition : 2
  • :
    ISO/TC 119/SC 2
    Échantillonnage et méthodes d'essais des poudres (y compris les poudres pour métaux-durs)
  • 77.160
    Métallurgie des poudres

Acheter cette norme

Format Langue
PDF
Papier
  • CHF38

Vous avez une question?

Consulter notre FAQ

Service à la clientèle
+41 22 749 08 88

Horaires d’ouverture:
De lundi à vendredi - 09:00-12:00, 14:00-17:00 (UTC+1)

Suivez l'actualité de l'ISO

Inscrivez-vous à notre Newsletter (en anglais) pour suivre nos actualités, points de vue et informations sur nos produits.