ISO 4491-2:2023
Metallic powders — Determination of oxygen content by reduction methods — Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
- Standard No.
- ISO 4491-2:2023
- Release Date
- 2023
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 4491-2:2023
- 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.
ISO 4491-2:2023 history
- 2023 ISO 4491-2:2023 Metallic powders — Determination of oxygen content by reduction methods — Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
- 1997 ISO 4491-2:1997 Metallic powders - Determination of oxygen content by reduction methods - Part 2: Loss of mass on hydrogen reduction (hydrogen loss)
- 1989 ISO 4491-2:1989 Metallic powders; determination of oxygen content by reduction methods; part 2: loss of mass on hydrogen reduction (hydrogen loss)
