EN ISO 4491-2:1999
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss) (ISO 4491-2:1997)
31-01-2000
21-07-1999
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Withdrawn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 |
| 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) |
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