95.99 Withdrawal of Standard Apr 1, 2019
ISO
ISO/TC 119/SC 2 Sampling and testing methods for powders (including powders for hardmetals)
International Standard
77.160 Powder metallurgy
ISO 4491-4:2013 specifies a method for the determination of the total oxygen content of metallic powders by reduction-extraction at high temperature.
By agreement, this method is also applicable to the determination of the total oxygen content of sintered metal materials.
The method is applicable to all powders of metals, alloys, carbides, and mixtures thereof which are non-volatile under the test conditions. The sample may be in powder or compact form.
The analysis is carried out on the powder as supplied, but the method is not applicable if the powder contains a lubricant or binder. If such substances are present, the method may be used only if they can first be completely removed by a method not affecting the oxygen content of the powder.
ISO 4491-4:2013 is to be read in conjunction with ISO 4491-1.
WITHDRAWN
ISO 4491-4:1989
WITHDRAWN
ISO 4491-4:2013
95.99
Withdrawal of Standard
Apr 1, 2019
PUBLISHED
ISO 4491-4:2019