Permeable sintered metal materials - Determination of bubble test pore size (ISO 4003:1977)

Specifies a method for the detrmination of the pore size of filters, porous bearings, porous electrodes and other parts with interconnected porosity. The bubble test shall be considered as a quality control test and not as a test for defining filter grades of determining exact pore size and pore size distribution.

Durchlässige Sintermetalle - Ermittlung der Porengröße mittels Gasblasentest (ISO 4003:1977)

Diese Internationale Norm beschreibt ein Verfahren, bekannt als Gasblasentest (bubbie-test), zur Ermittlung der Porengrösse von durchlässigen, gesinterten pulvermetallurgischen Werkstoffen, d.h. Sinterwerkstoffen für Filter, Sinterlager, poröse Elektroden und andere Teile mit untereinander verbundener Porosität.

Matériaux en métal fritté perméable - Détermination de la dimension des pores - Méthode bulloscopique (ISO 4003:1977)

La présente Norme internationale spécifie une méthode d'essai, dite bulloscopique, pour déterminer la dimension des pores dans les matériaux perméables frittés de la métallurgie des poudres, c'est-à-dire les filtres, les coussinets autolubrifiants, les électrodes poreuses et autres pièces à porosité interconnectée.  
NOTE -- L'essai bulloscopique doit être considéré comme un essai de contrôle de qualité et non comme une méthode pour définir des nuances de filtres ou pour déterminer les dimensions exactes des pores et la distribution de ces dimensions.

Permeable sintered metal materials - Determination of bubble test pore size (ISO 4003:1977)

General Information

Status
Published
Publication Date
06-Apr-1993
Withdrawal Date
30-Oct-1993
ICS
77.160 - Powder metallurgy
Technical Committee
CEN/SS M11 - Powder metallurgy
Drafting Committee
CEN/SS M11 - Powder metallurgy
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
13-Oct-1999
Completion Date
13-Oct-1999
Ref Project
SIST EN 24003:2000 - Permeable sintered metal materials - Determination of bubble test pore size (ISO 4003:1977)

Overview

EN 24003:1993 (Permeable sintered metal materials - Determination of bubble test pore size) is a CEN standard that adopts ISO 4003:1977 and specifies the bubble test method for assessing pore size in sintered metal parts with interconnected porosity. The standard is intended as a quality control procedure for components such as filters, porous bearings and porous electrodes. It is explicitly not intended as a definitive method for assigning filter grades or for determining exact pore size distributions.

Key topics and requirements

  • Scope: Applies to permeable sintered metal materials where porosity is interconnected (flow-through structures).
  • Test method: Defines the use of the bubble (bubble-point) test principle to determine a characteristic pore size representative for QC purposes.
  • Purpose: Emphasizes the bubble test as a quality control test, suitable for routine inspection and acceptance testing rather than detailed pore characterization.
  • Materials covered: Filters, porous bearings, porous electrodes and other sintered metal parts produced by powder metallurgy techniques.
  • Limitations: The standard states the bubble test should not be used to define filter grades or to establish exact pore size distribution - it gives a practical, comparative pore-size value.

Applications

EN 24003:1993 is useful for organizations needing a standardized, repeatable pore-size check on sintered metal products:

  • Manufacturers of sintered metal filters, porous bearings, fuel filters, hydraulic components and porous electrodes who require routine production QC.
  • Quality control laboratories conducting batch acceptance, in-process checks, or final inspection.
  • R&D and process engineering groups that need a simple comparative method to monitor manufacturing changes or sintering process adjustments.
  • Supply chain and purchasing teams who require a standard test definition for contract or conformity verification.

Practical benefits include faster acceptance testing, straightforward correlation between batches, and a standardized approach to detecting gross changes in average pore size or permeability during production.

Related standards

  • ISO 4003:1977 - the international method on which EN 24003:1993 is based.
  • Other standards on porous media testing and filter classification may be used in combination when a detailed pore size distribution or specific filter grading is required (consult relevant ISO/CEN documents for full characterization methods).

Keywords: EN 24003:1993, permeable sintered metal materials, bubble test, pore size determination, sintered metal filters, quality control, ISO 4003:1977, powder metallurgy.

Frequently Asked Questions

EN 24003:1993 is a standard published by the European Committee for Standardization (CEN). Its full title is "Permeable sintered metal materials - Determination of bubble test pore size (ISO 4003:1977)". This standard covers: Specifies a method for the detrmination of the pore size of filters, porous bearings, porous electrodes and other parts with interconnected porosity. The bubble test shall be considered as a quality control test and not as a test for defining filter grades of determining exact pore size and pore size distribution.

Specifies a method for the detrmination of the pore size of filters, porous bearings, porous electrodes and other parts with interconnected porosity. The bubble test shall be considered as a quality control test and not as a test for defining filter grades of determining exact pore size and pore size distribution.

EN 24003:1993 is classified under the following ICS (International Classification for Standards) categories: 77.160 - Powder metallurgy. The ICS classification helps identify the subject area and facilitates finding related standards.

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Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Permeable sintered metal materials - Determination of bubble test pore size (ISO 4003:1977)Durchlässige Sintermetalle - Ermittlung der Porengröße mittels Gasblasentest (ISO 4003:1977)Matériaux en métal fritté perméable - Détermination de la dimension des pores - Méthode bulloscopique (ISO 4003:1977)Permeable sintered metal materials
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