DIN EN ISO 13944
Lubricated metal-powder mixes - Determination of lubricant content - Soxhlet extraction method (ISO 13944:2012); German version EN ISO 13944:2012
Metallpulver mit Gleitmittelzusatz - Bestimmung des Gleitmittelanteils - Extraktionsverfahren nach Soxhlet (ISO 13944:2012); Deutsche Fassung EN ISO 13944:2012
Overview
The standard contains a method for the determination of the lubricant content of a powder mix. It can also be used for measuring the content of elements, for instance graphite and oxygen, the determination of which is interfered with by the presence of a lubricant. A condition of the application of the method is that a suitable solvent for the lubricant concerned is known and available. The lubricant is extracted from a weighed test portion using a suitable solvent. The test portion is reweighed after the extraction and the percentage mass loss is calculated. This represents the extracted lubricant. The extracted test portion remaining can then be used to determine, by the normal methods, the content of other constituents, without any interference from the lubricant. The International Standard has been prepared by ISO/TC 119/SC 2 "Sampling and testing methods for powders (including powders for hardmetals)". The national mirror committee is the Working Committee of the same name, NA 145-01-02 AA, of the Technology of Materials Standards Committee (NWT) at DIN.
Responsible national committee
NA 145-01-06 AA - Powder metallurgy
