ONORM EN ISO 4491-2 : 1999
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
METALLIC POWDERS - DETERMINATION OF OXYGEN CONTENT BY REDUCTION METHODS - LOSS OF MASS ON HYDROGEN REDUCTION (HYDROGEN LOSS)
31-10-2023
12-01-2013
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.
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