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Reference | EN ISO 4491-4:2019 |
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Title | Metallic powders - Determination of oxygen content by reduction methods - Part 4: Total oxygen by reduction-extraction (ISO 4491-4:2019) |
Work Item Number | CSM11109 |
Abstract/Scope | This document 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 can 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 document is to be read in conjunction with ISO 4491-1. |
Status |
Published
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Reference Document |
ISO 4491-4:2019 (EQV)
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date of Availability (DAV) | 2019-05-01 |
ICS | 77.160 - Powder metallurgy |
A-Deviation(s) | |
Special National Condition(s) |
Directive(s) | |
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Mandate(s) | |
Citation in OJEU |
date of Ratification (DOR) (1) | 2019-04-25 |
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date of Availability (DAV) (2) | 2019-05-01 |
date of Announcement (DOA) (3) | 2019-08-31 |
date of Publication (DOP) (4) | 2019-11-30 |
date of Withdrawal (DOW) (5) | 2019-11-30 |
Supersedes | EN ISO 4491-4:2013 |
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Superseded by | |
Normative reference (6) |
ISO 4491-1
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Sales Points |
(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
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In the case of series, a link to each standard identified in the series is provided.
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