EN ISO 4491-2:2023

Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:2023)

This document specifies a method for the determination of the relative loss of mass which a metallic powder undergoes when heated in a stream of pure dry hydrogen under specified conditions.
The purpose of this test is to evaluate a chemical powder characteristic which is of importance to the powder metallurgical industry. The test is not intended as a means for the determination of the content of specific elements (see Annex A and ISO 4491-1).
The test method is applicable to unalloyed, partially alloyed and completely alloyed powders of the metals listed in Table 1 (see 7.2.1). It is not applicable to lubricated powders or to mixtures of metal powders.

Metallpulver - Bestimmung des Sauerstoffanteils durch Reduktionsverfahren - Teil 2: Masseverlust durch Reduktion mit Wasserstoff (ISO 4491-2:2023)

Dieses Dokument legt ein Verfahren zur Bestimmung des relativen Masseverlustes fest, den ein Metallpulver erfährt, wenn es unter festgelegten Bedingungen in einem Strom von reinem trockenem Wasserstoff erhitzt wird.
Zweck dieser Prüfung ist die Bewertung einer chemischen Pulvereigenschaft, die für die pulvermetallurgische Industrie von Bedeutung ist. Die Prüfung ist nicht als Mittel zur Bestimmung des Gehalts an bestimmten Ele
menten gedacht (siehe AnhangA und ISO4491-1).
Das Prüfverfahren ist anwendbar auf unlegierte, teillegierte und fertiglegierte Pulver der in Tabelle1 aufge
führten Metalle (siehe 7.2.1). Es ist nicht anwendbar auf geschmierte Pulver oder auf Mischungen von Metall
pulvern.

Poudres métalliques - Dosage de l'oxygène par les méthodes de réduction - Partie 2: Perte de masse par réduction dans l'hydrogène (perte dans l'hydrogène) (ISO 4491-2:2023)

Le présent document spécifie une méthode pour la détermination de la perte de masse relative que subit une poudre métallique quand elle est chauffée dans un courant d’hydrogène pur et sec dans des conditions spécifiées.
Cet essai permet d’évaluer une caractéristique chimique des poudres qui est importante dans l’industrie de la métallurgie des poudres. L’essai n’a pas pour objet de déterminer la teneur en certains éléments spécifiques (voir l’Annexe A et l’ISO 4491-1).
La présente méthode d’essai est applicable aux poudres non alliées, partiellement ou complètement alliées, à base des métaux indiqués dans le Tableau 1 (voir 7.2.1). Elle n’est pas applicable aux poudres contenant du lubrifiant ou aux mélanges de poudres métalliques.

Kovinski praški - Ugotavljanje deleža kisika z redukcijskimi metodami - 2. del: Izguba mase pri redukciji vodika (izguba vodika) (ISO 4491-2:2023)

Ta dokument opisuje metodo za določanje sorazmerne izgube mase kovinskega praška pri segrevanju v toku čistega suhega vodika pod določenimi pogoji.
Namen tega preskusa je oceniti lastnosti kemičnih praškov, ki so pomembne za praškovno metalurško industrijo. Preskus ni namenjen kot sredstvo za ugotavljanje deleža določenih elementov (glej dodatek A in standard ISO 4491-1).
Preskusna metoda se uporablja za nelegirane, delno legirane in v celoti legirane praške kovin iz preglednice 1 (glej točko 7.2.1). Ne uporablja se za lubricirane praške ali mešanice kovinskih praškov.

General Information

• Status: Published
• Publication Date: 25-Apr-2023
• ICS: 77.160 - Powder metallurgy
• Technical Committee: CEN/SS M11 - Powder metallurgy
• Drafting Committee: CEN/SS M11 - Powder metallurgy
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 26-Apr-2023
• Completion Date: 26-Apr-2023
• Ref Project: SIST EN ISO 4491-2:2023 - Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:2023)

Relations

• Replaces: EN ISO 4491-2:1999 - Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1997)
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 4491-2:2023
01-julij-2023
Kovinski praški - Ugotavljanje deleža kisika z redukcijskimi metodami - 2. del:
Izguba mase pri redukciji vodika (izguba vodika) (ISO 4491-2:2023)
Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss
of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:2023)
Metallpulver - Bestimmung des Sauerstoffanteils durch Reduktionsverfahren - Teil 2:
Masseverlust durch Reduktion mit Wasserstoff (ISO 4491-2:2023)
Poudres métalliques - Dosage de l'oxygène par les méthodes de réduction - Partie 2:
Perte de masse par réduction dans l'hydrogène (perte dans l'hydrogène) (ISO 4491-
2:2023)
Ta slovenski standard je istoveten z: EN ISO 4491-2:2023
ICS:
77.160 Metalurgija prahov Powder metallurgy
SIST EN ISO 4491-2:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 4491-2:2023

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SIST EN ISO 4491-2:2023


EN ISO 4491-2
EUROPEAN STANDARD

NORME EUROPÉENNE

April 2023
EUROPÄISCHE NORM
ICS 77.160 Supersedes EN ISO 4491-2:1999
English Version

Metallic powders - Determination of oxygen content by
reduction methods - Part 2: Loss of mass on hydrogen
reduction (hydrogen loss) (ISO 4491-2:2023)
Poudres métalliques - Dosage de l'oxygène par les Metallpulver - Bestimmung des Sauerstoffanteils durch
méthodes de réduction - Partie 2: Perte de masse par Reduktionsverfahren - Teil 2: Masseverlust durch
réduction dans l'hydrogène (perte dans l'hydrogène) Reduktion mit Wasserstoff (ISO 4491-2:2023)
(ISO 4491-2:2023)
This European Standard was approved by CEN on 16 April 2023.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4491-2:2023 E
worldwide for CEN national Members.

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SIST EN ISO 4491-2:2023
EN ISO 4491-2:2023 (E)
Contents Page
European foreword . 3

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SIST EN ISO 4491-2:2023
EN ISO 4491-2:2023 (E)
European foreword
This document (EN ISO 4491-2:2023) has been prepared by Technical Committee ISO/TC 119 "Powder
metallurgy" in collaboration with CCMC.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by October 2023, and conflicting national standards shall
be withdrawn at the latest by October 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 4491-2:1999.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The
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