NF EN ISO 4491-1, A95-181-1 (04/2023)

This document is the first part of a series of standards that deal with the reduction dosing of oxygen in metal powders. It gives general guidelines for the use of reduction methods and recommendations for the correct interpretation of the results obtained. The test methods are generally applicable to all powders of metals, alloys, carbides and mixtures of these elements. The powder constituents must be non-volatile under the test conditions. The powder must not contain any lubricant or organic binder. There are nevertheless certain limits linked to the nature of the metal analyzed. These limits are studied in Article 4.
(Automatic translation from French)