SIST EN ISO 9556:2002
(Main)Steel and iron - Determination of total carbon content - Infrared absorption method after combustion in an induction furnace (ISO 9556:1989)
Steel and iron - Determination of total carbon content - Infrared absorption method after combustion in an induction furnace (ISO 9556:1989)
Routine method for multi-element determination of chemical composition of low alloy steel.
Stahl und Eisen - Bestimmung des Gesamtkohlenstoffgehalts - Verfahren mit Infrarotabsorption nach Verbrennung im Induktionsofen (ISO 9556:1989)
Diese Internationale Norm legt ein Verfahren mit Infrarotabsorption nach Verbrennung im Induktionsofen zur Bestimmung des Gesamtkohlenstoffgehalts in Stahl und Eisen fest.
Das Verfahren ist auf Kohlenstoffgehalte zwischen 0,003 % (m/m) und 4,5 % (m/m) anwendbar.
Aciers et fontes - Dosage du carbone total - Méthode par absorption dans l'infrarouge apres combustion dans un four a induction (ISO 9556:1989)
La présente Norme internationale prescrit une méthode de dosage du carbone total dans les aciers et les fontes par absorption dans l'infrarouge après combustion dans un four à induction. La méthode est applicable aux teneurs en carbone comprises entre 0,003 % (m/m) et 4,5 % (m/m).
Jeklo in železo - Določevanje celotnega ogljika - Infrardeča absorpcijska metoda po sežigu v indukcijski peči (ISO 9556:1989)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 9556:2002
01-september-2002
-HNORLQåHOH]R'RORþHYDQMHFHORWQHJDRJOMLND,QIUDUGHþDDEVRUSFLMVNDPHWRGD
SRVHåLJXYLQGXNFLMVNLSHþL ,62
Steel and iron - Determination of total carbon content - Infrared absorption method after
combustion in an induction furnace (ISO 9556:1989)
Stahl und Eisen - Bestimmung des Gesamtkohlenstoffgehalts - Verfahren mit
Infrarotabsorption nach Verbrennung im Induktionsofen (ISO 9556:1989)
Aciers et fontes - Dosage du carbone total - Méthode par absorption dans l'infrarouge
apres combustion dans un four a induction (ISO 9556:1989)
Ta slovenski standard je istoveten z: EN ISO 9556:2001
ICS:
77.040.30 Kemijska analiza kovin Chemical analysis of metals
SIST EN ISO 9556:2002 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 9556:2002
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SIST EN ISO 9556:2002
EUROPEAN STANDARD
EN ISO 9556
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2001
ICS 07.008.01
English version
Steel and iron - Determination of total carbon content - Infrared
absorption method after combustion in an induction furnace
(ISO 9556:1989)
Aciers et fontes - Dosage du carbone total - Méthode par Stahl und Eisen - Bestimmung des
absorption dans l'infrarouge après combustion dans un four Gesamtkohlenstoffgehalts - Verfahren mit
à induction (ISO 9556:1989) Infrarotabsorption nach Verbrennung im Induktionsofen
(ISO 9556:1989)
This European Standard was approved by CEN on 11 May 2001.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9556:2001 E
worldwide for CEN national Members.
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SIST EN ISO 9556:2002
Page 2
EN ISO 9556:2001
CORRECTED 2002-01-02
Foreword
The text of the International Standard from Technical Committee ISO/TC 17 "Steel" of the
International Organization for Standardization (ISO) has been taken over as a European
Standard by Technical Committee ECISS/TC 20 "Methods of chemical analysis of ferrous
products", 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 December 2001, and conflicting
national standards shall be withdrawn at the latest by December 2001.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United
Kingdom.
Endorsement notice
The text of the International Standard ISO 9556:1989 has been approved by CEN as a
European Standard without any modification.
NOTE Normative references to International Standards are listed in annex ZA (normative).
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SIST EN ISO 9556:2002
Page 3
EN ISO 9556:2001
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions
of -any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications,
indicated by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 377 1997 Steel and steel products - Location EN ISO 377 1997
and preparation of samples and test
pieces for mechanical testing
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SIST EN ISO 9556:2002
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SIST EN ISO 9556:2002
INTERNATIONAL
IS0
STANDARD 9556
First edition
1989-07-15
Corrected and
reprinted
1989-11-15
Steel and iron - Determination of total carbon
content - Infrared absorption method after
combustion in an induction furnace
Aciers et fon tes - Dosage du carbone total - M&hode par absorption dans
l’infrarouge apr& combustion dans un four ;i induction
Reference number
IS0 9556 : 1989 (E)
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SIST EN ISO 9556:2002
IS0 9556 :I989 (El
Foreword
IS0 (the lnternational Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 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, govern-
mental and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission (IEC) on all
matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
International Standard IS0 9556 was prepared by Technical Committee lSO/TC 17,
S tee/.
Annexes A, B and C of this International Standard are for information only.
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SIST EN ISO 9556:2002
IS0 9556 : 1989 (E)
INTERNATIONAL STANDARD
Determination of total carbon content -
Steel and iron -
Infrared absorption method after combustion in
an induction furnace
4 Reagents
1 Scope
During the analysis, unless otherwise stated, use only reagents
This International Standard specifies an infrared absorption
of recognized analytical grade and only distilled water or water
method after combustion in an induction furnace for the deter-
of equivalent purity.
mination of the tota; carbon content in steel and iron.
4.1 Water, free from carbon dioxide.
The method is applicable to carbon contents between 0,003 %
(m/m) and 4,5 % (m/m).
Boil water for 30 min, cool to room temperature and bubble
with oxygen (4.2) for 15 min. Prepare just before use.
2 Normative references
4.2 Oxygen, 99,5 % (m/m) minimum.
The following standards contain provisions which, through
An oxidation catalyst [copper oxide or platinum] tube heated
reference in this text, constitute provisions of this International
to a temperature above 450 OC must be used prior to a purify-
Standard. At the time of publication, the editions indicated
ing unit (see annex C), when the presence of organic con-
were valid. All standards are subject to revision, and parties to
taminants is suspected in the oxygen.
agreements based on this International Standard are encour-
aged to investigate the possibility of applying the most recent
4.3 Pure iron, of known low carbon content less than
editions of the standards listed below. Members of IEC and IS0
0,001 0 % (m/m).
maintain registers of currently valid International Standards.
4.4 Suitable solvent, appropriate for washing greasy or
IS0 377: 1985, Wrought steel - Selection andpreparation of
dirty test samples, for example, acetone.
samples and test pieces.
IS0 385-l : 1984, Laboratory glassware - Burettes - Part 7:
4.5 Magnesium perchlorate [Mg(Cl04)$, particle size :
General requirements.
from 0,7 mm to I,2 mm.
IS0 648 : 1977, Laboratory glassware - One-mark pipettes.
4.6 Barium carbonate
IS0 1042 : 1983, Laboratory glassware - One-mark volumetric
Dry barium carbonate (minimum assay : 99,5 %I at 105 OC to
flasks.
110 OC for 3 h and cool in a desiccator before use.
IS0 5725 : 1986, Precision of test methods - Determination of
4.7 Sodium carbonate
repeatability and reproducibility for a standard test method by
inter-laboratory tests.
Dry anhydrous sodium carbonate (minimum assay: 99,9 %) at
285 OC for 2 h and cool in a desiccator before use.
3 Principle 4.8 Accelerator: copper, tungsten-tin mixture or tungsten
of known low carbon content less than 0,001 0 % (m/m).
Combustion of a test portion with accelerator at a high
temperature in a high-frequency induction furnace in a current
4.9 Sucrose, standard solution, corresponding to 25 g of C
of pure oxygen. Transformation of carbon into carbon dioxide
per Iitre.
and/or carbon monoxide.
Weigh, to the nearest 1 mg, 14,843 g of sucrose (C12HZO11)
Measurement by infrared absorption of the carbon dioxide (analytical standards grade) previously dried at 100 OC to
and/or carbon monoxide carried by a current of oxygen. 105 OC for 2,5 h and cooled in a desiccator.
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SIST EN ISO 9556:2002
Is0 9556 : 1989 E)
7 Procedure
Dissolve in about 100 ml of water (4.1), transfer to a 250 ml
one-mark volumetric flask quantitatively, dilute to the mark
with water (4.1) and mix.
SAFETY INSTRUCTIONS - The risks related to combus-
tion analysis are mainly burns in pre-igniting the ceramic
1 ml of this standard solution contains 25 mg of C. crucibles and in the fusions. Use crucible tongs at all
times and suitable containers for the used crucibles. Nor-
mal precautions for handling oxygen cylinders shall be
4.10 Sodium carbonate, standard solution, corresponding
taken. Oxygen from the combustion process shall be
to 25 g of C per litre.
removed effectively from the apparatus since a high con-
centration of oxygen in a confined space can present a
Weigh, to the nearest 1 mg, 55,152 g of sodium carbonate
fire hazard.
(4.7), dissolve in about 200 ml of water (4.1), transfer to a
250 ml one-mark volumetric flask quantitatively, dilute to the
mark with water (4.1) and mix.
7.1 General operating instructions
1 ml of this standard solution contains 25 mg of C.
Purify the oxygen supply using tubes packed with the inert
ceramic (attapulgus clay) impregnated with sodium hydroxide
impregnated with (4.11) and magnesium perchlorate (4.51, and maintain a quies-
nert cera mic (attapulgus clay)
4.11 I
mm to 1,2 mm. cent flow rate whilst on standby. Maintain a glass wool filter or
sodium hydroxide, particle size : from 0,7
a stainless steel net as a dust collector. Clean and change as
necessary. The furnace chamber, pedestal post and filter trap
shall be cleaned frequently to remove oxide build-up.
5 Apparatus
Allow each item of equipment to stabilize for the time recom-
During the analysis, unless otherwise stated, use only ordinary
mended by the equipment manufacturers when the main
laboratory apparatus.
supply is switched on after being out of action for any length of
time.
All volumetric glassware shall be class A, in accordance with
IS0 385-1, IS0 648 or IS0 1042 as appropriate.
After cleaning the furnace chamber and/or changing filters or
after the equipment has been inoperative for a period, stabilize
The apparatus required for combustion in a high-frequency in-
the apparatus by burning several samples of similar type to the
duction furnace and the subsequent infrared absorption
samples to be analysed prior to setting up for analysis.
measurement of the evolved carbon dioxide and/or carbon
monoxide may be obtained commercially from a number of
Flush oxygen through the apparatus and adjust the instrument
manufacturers. Follow the manufacturer’s instructions for the
controls to give a zero reading.
operation of the instrument.
If the instrument used provides a direct reading in percentage
Features of commercial instruments are given in annex C.
of carbon, adjust the instrument reading for each calibration
range as follows.
5.1 Micropipette, 100 ~1, limit of error shall be less than
1 PI.
Select the certified reference material with a carbon content
close to the maximum carbon content in the calibration series,
measure the carbon content of the certified reference material
Tin capsule, about 6 mm in diameter, 18 mm in height,
5.2
in the manner specified in 7.4.
0,3 g in mass and approximately 0,4 ml in volume, of known
low carbon content less than 0,001 0 % (m/m).
Adjust the reading of the instrument to the certified value.
5.3 Ceramic crucible, capable of withstanding combustion
NOTE
- This adjustment shall be made before the calibration as
in an induction furnace.
specified in 7.5. It cannot replace or correct the calibration.
Ignite crucibles in an electric furnace in air or in a current of
oxygen for not less than 2 h at 1 100 OC and store in a desic-
7.2 Test portion
cator before use.
Degrease the test sample by washing in a suitable solvent (4.4).
NOTE - For the determination of low carbon contents it is advisable to
Evaporate the last traces of the washing liquid by heating.
ignite crucibles at 1 350 OC in a current of oxygen.
Weigh, to the nearest 1 mg, approximately 1 g of the test sam-
ple for carbon contents less than I,0 % (m/m) and approx-
6 Sampling
imately 0,5 g for carbon contents greater than 1,O % (m/m).
Carry out sampling in accordance with IS0 377 or appropriate
NOTE - The mass of the test portion may be dependent on the type of
national standards for iron,
instrument used.
2
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SIST EN ISO 9556:2002
ISO9556:1989 (E)
Using the micropipette (5.1), transfer 100 ~11 of each of the
7.3 Blank test
diluted solutions to five tin capsules (5.2) and dry at 90 OC for
2 h.
Prior to the determination, carry out the following blank tests in
duplicate.
Cool to room temperature in a desiccator.
...
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