NEN-ISO 4491-2

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

inactive, Most Current
Organization: NEN
Publication Date: 1 June 1993
Status: inactive
Page Count: 12
ICS Code (Powder metallurgy): 77.160
scope:

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.

Document History

NEN-ISO 4491-2
June 1, 1993
Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
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....

References

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