EN ISO 4829-2:2016

SLOVENSKI STANDARD
01-maj-2016
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SIST EN 24829-2:1998
SIST EN 24829-2:1998/AC1:1998
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Steel and iron - Determination of total silicon content - Reduced molybdosilicate
spectrophotometric method - Part 2: Silicon contents between 0,01 and 0,05 % (ISO
4829-2:2016)
Stahl - Bestimmung des Gesamtsiliciumanteils - Spektrophotometrische Methode mit
reduziertem Molybdatosilicat - Teil 2: Siliciumanteile zwischen 0,01 und 0,05 % (ISO
4829-2:2016)
Aciers et fontes - Dosage du silicium total - Méthode spectrophotométrique au
molybdosilicate réduit - Partie 2: Teneurs en silicium comprises entre 0,01 et 0,05 %
(ISO 4829-2:2016)
Ta slovenski standard je istoveten z: EN ISO 4829-2:2016
ICS:
77.040.30 Kemijska analiza kovin Chemical analysis of metals
77.080.01 Železne kovine na splošno Ferrous metals in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 4829-2
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2016
EUROPÄISCHE NORM
ICS 77.080.01 Supersedes EN 24829-2:1990
English Version
Steels - Determination of total silicon contents - Reduced
molybdosilicate spectrophotometric method - Part 2:
Silicon contents between 0,01 % and 0,05 % (ISO 4829-
2:2016)
Aciers - Détermination du silicium total - Méthode Stahl - Bestimmung des Gesamtsiliciumanteils -
spectrophotométrique au silicomolybdate réduit - Spektrophotometrische Methode mit reduziertem
Partie 2: Teneurs en silicium comprises entre 0,01 % et Molybdatosilicat - Teil 2: Siliciumanteile zwischen 0,01
0,05 % (ISO 4829-2:2016) % und 0,05 % (ISO 4829-2:2016)
This European Standard was approved by CEN on 21 November 2015.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4829-2:2016 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 4829-2:2016) has been prepared by Technical Committee ISO/TC 17 “Steel” in
collaboration with Technical Committee ECISS/TC 102 “Methods of chemical analysis for iron and steel”
the secretariat of which is held by SIS.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2016, and conflicting national standards
shall be withdrawn at the latest by September 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN 24829-2:1990.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 4829-2:2016 has been approved by CEN as EN ISO 4829-2:2016 without any
modification.
INTERNATIONAL ISO
STANDARD 4829-2
Second edition
2016-02-15
Steels — Determination of total silicon
contents — Reduced molybdosilicate
spectrophotometric method —
Part 2:
Silicon contents between 0,01 % and
0,05 %
Aciers — Détermination du silicium total — Méthode
spectrophotométrique au silicomolybdate réduit —
Partie 2: Teneurs en silicium comprises entre 0,01 % et 0,05 %
Reference number
ISO 4829-2:2016(E)
©
ISO 2016
ISO 4829-2:2016(E)
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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ii © ISO 2016 – All rights reserved

ISO 4829-2:2016(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Reagents . 1
5 Apparatus . 3
6 Sampling . 4
7 Procedure. 4
7.1 Test portion . 4
7.2 Blank test . 4
7.3 Determination . 4
7.3.1 Dissolution of the test portion . 4
7.3.2 Treatment of insoluble residue . 4
7.3.3 Preparation of the test solution . 4
7.3.4 Development of the colour . 5
7.3.5 Spectrophotometric measurements . 5
7.4 Establishment of the calibration curve . 6
7.4.1 Preparation of the calibration solutions . 6
7.4.2 Spectrophotometric measurements . 6
7.4.3 Plotting of the calibration curve . 6
8 Expression of results . 6
8.1 Method of calculation . 6
8.2 Precision . 7
9 Test report . 7
Annex A (informative) Additional information on the interlaboratory test .9
Bibliography .10
ISO 4829-2:2016(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.
The committee responsible for this document is ISO/TC 17, Steel, Subcommittee SC 1, Methods of
determination of chemical composition.
This second edition cancels and replaces the first edition (ISO 4829-2:1988), which has been
technically revised.
ISO 4829 consists of the following parts, under the general title Steels — Determination of total silicon
contents — Reduced molybdosilicate spectrophotometric method:
— Part 1: Silicon contents between 0,05 % and 1,0 %
— Part 2: Silicon contents between 0,01 % and 0,05 %
iv © ISO 2016 – All rights reserved

INTERNATIONAL STANDARD ISO 4829-2:2016(E)
Steels — Determination of total silicon contents —
Reduced molybdosilicate spectrophotometric method —
Part 2:
Silicon contents between 0,01 % and 0,05 %
1 Scope
This part of ISO 4829 specifies a spectrophotometric method for the determinatio
...