GB/T 5158.4-2011: Metallic powders -- Determination of oxygen content by reduction methods -- Part 4: Total oxygen by reduction-extraction

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Scope

This Part of GB/T 5158 specifies a method for the determination of the total oxygen
content of metallic powders in concentrations up to 2 % (mass fraction) 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.
This Part is applicable to all powders of metals, alloys, carbides (hard alloys) 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.
This Part shall be used in conjunction with GB/T 5158.1.

Basic Data

Standard ID	GB/T 5158.4-2011 (GB/T5158.4-2011)
Description (Translated English)	Metallic powders -- Determination of oxygen content by reduction methods -- Part 4: Total oxygen by reduction-extraction
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H16
Classification of International Standard	77.160
Word Count Estimation	9,972
Date of Issue	2011-05-12
Date of Implementation	2012-02-01
Older Standard (superseded by this standard)	GB/T 5158.4-2001
Quoted Standard	GB/T 5158.1
Adopted Standard	ISO 4491-4-1989, IDT
Regulation (derived from)	Announcement of Newly Approved National Standards No. 6 of 2011
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the high temperature reduction Determination of extracted metal powder is not more than 2% (mass fraction) of the total oxygen content approach. By agreement, sintered metal can be used to determine the total oxygen content material. This section applies to a variety of metals, alloys, carbides (carbide) as well as in non- volatile components under test conditions a mixture of powder. Samples may be in powder form, it can be pressed pieces.