Norm

NEN-ISO 4491-2:1993 en

Poeders van metalen - Bepaling van het gehalte aan zuurstof door de reductiemethode - Deel 2: Massaverlies door waterstofreductie

  • Deze norm is ingetrokken sinds 31-01-2000

31,57

Over deze norm

Status Ingetrokken
Aantal pagina's 5
Gepubliceerd op 01-06-1993
Taal Engels
This part of ISO 4491 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 specififc elements. The test method is applicable to unalloyed, partially alloyed and completely alloyed powders of the metals listed in table 1. It is not applicable to lubricated powders or to mixtures of metal powders. The results can be influenced by the presence of reducible, oxidizable or volatile metals, metalloids or compounds (see annex A). The results obtained on such powders shall be used wich caution and their interpretation shall be subject to agreement between supplier and user.

Details

ICS-code 77.160
Nederlandse titel Poeders van metalen - Bepaling van het gehalte aan zuurstof door de reductiemethode - Deel 2: Massaverlies door waterstofreductie
Engelse titel Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
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