EN ISO 4491-2:1999

Name: EN ISO 4491-2:1999
Brand: CEN

Withdrawn

Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1997)

Withdrawn date

31-01-2000

Published date

21-07-1999

Publisher

Comite Europeen de Normalisation

Foreword
1 Scope
2 Normative references
3 Reagents and materials
4 Apparatus
5 Sampling
6 Procedure
7 Calculation and expression of test results
8 Test report
Annex A (normative) Interpretation of results
Annex ZA (normative) Normative references to international
publications with their relevant
European publications

Gives a method to determine the relative loss of mass which a metallic powder undergoes when heated in a stream of pure dry hydrogen under specific conditions. The test purpose is to evaluate a chemical powder characteristic which is of importance to the powder metallurgical industry. The test is not meant as a means to determine the content of specific elements. Applies to completely alloyed, partially alloyed and unalloyed powders of the metals listed. Does not apply to lubricated powders or mixtures of metal powders.

Committee	CEN/BT
DevelopmentNote	Supersedes EN 24491-2 (08/1999)
DocumentType	Standard
PublisherName	Comite Europeen de Normalisation
Status	Withdrawn
Supersedes	EN 24491-2 : 1993

Standards	Relationship
DS EN ISO 4491-2 : 2000	Identical
ONORM EN ISO 4491-2 : 1999	Identical
PN EN ISO 4491-2 : 2002	Identical
UNE-EN ISO 4491-2:2000	Identical
SN EN ISO 4491-2 : 1999	Identical
NBN EN ISO 4491-2 : 2ED 99	Identical
BS EN ISO 4491-2:1999	Identical
UNI EN ISO 4491-2 : 2001	Identical
ISO 4491-2:1997	Identical
NS EN ISO 4491-2 : 1ED 1999	Identical
NEN EN ISO 4491-2 : 1999	Identical
I.S. EN ISO 4491-2:1999	Identical
NF EN ISO 4491-2 : 1999	Identical

ISO 4491-1:1989	Metallic powders — Determination of oxygen content by reduction methods — Part 1: General guidelines
EN 24491-1:1993	Metallic powders - Determination of oxygen content by reduction methods - Part 1: General guidelines (ISO 4491-1:1989)