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ISO 4491-2:2023

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

Publication date:   Apr 19, 2023

General information

60.60 Standard published   Apr 19, 2023

ISO

ISO/TC 119/SC 2 Sampling and testing methods for powders (including powders for hardmetals)

International Standard

77.160   Powder metallurgy

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Scope

This document 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 specific elements (see Annex A and ISO 4491-1).
The test method is applicable to unalloyed, partially alloyed and completely alloyed powders of the metals listed in Table 1 (see 7.2.1). It is not applicable to lubricated powders or to mixtures of metal powders.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 4491-2:1997

NOW

PUBLISHED
ISO 4491-2:2023
60.60 Standard published
Apr 19, 2023