1、BRITISH STANDARD BS EN ISO 15349-2:2003 Unalloyed steel Determination of low carbon content Part 2: Infrared absorption method after combustion in an induction furnace (with preheating) The European Standard EN ISO 15349-2:2003 has the status of a British Standard ICS 77.040.30 BS EN ISO 15349-2:200
2、3 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 25 June 2003 BSI 25 June 2003 ISBN 0 580 42089 2 National foreword This British Standard is the official English language version of EN ISO 15349-2:2003. It is identical with ISO 15349-2:1999.
3、 The UK participation in its preparation was entrusted to Technical Committee ISE/18, Sampling and analysis of iron and steel, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards wh
4、ich implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This public
5、ation does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible internationa
6、l/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO titl
7、e page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 14, the Annex ZA page and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEURO
8、PENNE EUROPISCHENORM ENISO153492 June2003 ICS77.040.30 Englishversion UnalloyedsteelDeterminationoflowcarboncontentPart2: Infraredabsorptionmethodaftercombustioninaninduction furnace(withpreheating)(ISO153492:1999) AciernonalliDterminationdesfaiblesteneursen carbonePartie2:Mthodeparabsorptiondans li
9、nfrarougeaprscombustiondansunfourinduction (avecprchauffage)(ISO153492:1999) UnlegierterStahlBestimmungniedriger KohlenstoffgehalteTeil2:VerfahrenmitInfrarotabsorption nachVerbrennungimInduktionsofen(mitVorwrmung) (ISO153492:1999) ThisEuropeanStandardwasapprovedbyCENon16May2003. CENmembersareboundto
10、complywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropea
11、nStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepubl
12、ic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050
13、Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO153492:2003EForeword ThetextofISO153492:1999hasbeenpreparedbyTechnicalCommitteeISO/TC17“Steel”of theInternationalOrganizationforStandardization(ISO)andhasbeentakenoverasENISO 153492:200
14、3byTechnicalCommitteeECISS/TC20“Methodsofchemicalanalysis“,the secretariatofwhichisheldbySIS. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationof anidenticaltextorbyendorsement,atthelatestbyDecember2003,andconflictingnational standardsshallbewithdrawnatthelatestbyDecem
15、ber2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy, Luxembourg,Malta,Netherlands,Norway,Portugal,Slov
16、akia,Spain,Sweden,Switzerlandand theUnitedKingdom. Endorsementnotice ThetextofISO153492:1999hasbeenapprovedbyCENasENISO153492:2003withoutany modifications. NOTENormativereferencestoInternationalStandardsarelistedinAnnexZA(normative). ENISO153492:2003Reference number ISO 15349-2:1999(E) INTERNATIONAL
17、 STANDARD ISO 15349-2 First edition 1999-12-01 Unalloyed steel Determination of low carbon content Part 2: Infrared absorption method after combustion in an induction furnace (with preheating) Acier non alli Dtermination des faibles teneurs en carbone Partie 2: Mthode par absorption dans linfrarouge
18、 aprs combustion dans un four induction (avec prchauffage) ENISO153492:2003ISO -943512:(9991E) DPF dlcsiremia ihTs PDF file mya ctnoain emdeddeb tyfepcaes. In acccnadroe with Aebods licnesign lopic,y this file may be pirntde ro ivwede tub shall ton eb ideted lnuess teh tyfepacse which aer emdeddeb e
19、ra licnesed to dna intslaled on teh computre freporming teh idetign. In wodlnidaogn this f,eli trapies accept tniereh teh sersnoptilibiy of ton nifrgnigni Asebod licsnegni ilopcy. ehT ISO tneClar Secteraairt accepts no lilibaity ni this .aera Aebod is a tedarmakr fo Aebod Stsyems Icntaropro.de teDai
20、ls fo the sfotwera pcudorts sude to crtaee tihs PFD file can be fdnuo in the Glarene Info leratiev to the fil;e the Pc-FDaertion arapmteres were tpoimizde for pirtning. Evyre cera sah neeb taken to enseru taht teh file is suitlbae fro sue by ISO memreb idob.se In teh lnuikley etnev ttah a plborem le
21、ratign to it is f,dnuo lpsaee ifnrom teh tneClar Sceterairat at the sserdda givne lebwo. ISO 9991 All rhgits rsevre.de elnUss towrehise scepfidei, on trap of tihs cilbuptanoi mya eb cudorperde ro utzilide ni yna form ro yb yna snaem, eelctinorc ro mecinahcal, inclidugn tohpociypong dna micrfoilm, wi
22、ttuoh repmissino in writing form eitreh ISO at teh erddass lebwo ro ISOs memreb ydob in the ctnuoyr of the rtseuqee.r ISO cirypothg fofice saCe tsopale 65 1121-HC aveneG 20 leT. + 41 22 947 10 11 xaF + 14 22 437 01 97 E-mail cirypothgiso.ch eWb www.iso.ch Printed in Switzlredna ii ENISO153492:2003ii
23、i Contents Page 1 Scope 1 2 Normative references 1 3 Principle1 4 Reagents.2 5 Apparatus .3 6 Sampling and preparation of the test samples.4 7 Procedure .4 8 Expression of results 7 Annex A (informative) Features of commercial high-frequency induction furnaces and infrared carbon analysers 9 Annex B
24、 (informative) Additional information on international cooperative tests.11 Annex C (informative) Graphical representation of precision data .14 ENISO153492:2003iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bod
25、ies). 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
26、 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives,
27、Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements o
28、f this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 15349 was prepared by Technical Committee ISO/TC 17, Steel, Subcommittee SC 1, Methods of determination of chemical compositi
29、on. ISO 15349 consists of the following parts, under the general title Unalloyed steel Determination of low carbon content: Part 1: Infrared absorption method after combustion in an electric resistance furnace (by peak separation) Technical Report Part 2: Infrared absorption method after combustion
30、in an induction furnace (with preheating) Part 3: Infrared absorption method after combustion in an electric resistance furnace (with preheating) Technical Report Annexes A, B and C of this part of ISO 15349 are for information only. ENISO153492:2003INTENRAITONAL TSANDADR ISO -943512:(9991E) 1 Unall
31、oyed steel Determination of low carbon content Part 2: Infrared absorption method after combustion in an induction furnace (with preheating) 1 Scope This part of ISO 15349 specifies an infrared absorption method after combustion in an induction furnace for the determination of the low carbon content
32、 in unalloyed steel. The method is applicable to carbon contents between 0,000 3 % (m/m) and 0,010 % (m/m). 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 15349. For dated references, subseq
33、uent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 15349 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the lates
34、t edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 648:1977, Laboratory glassware One-mark pipettes. ISO 1042:1998, Laboratory glassware One-mark volumetric flasks. ISO 3696:1987, Water for analytical lab
35、oratory use Specification and test methods. ISO 5725-1:1994, Accuracy (trueness and precision) of measurement methods and results Part 1: General principles and definitions. ISO 5725-2:1994, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determinati
36、on of repeatability and reproducibility of a standard measurement method. ISO 5725-3:1994, Accuracy (trueness and precision) of measurement methods and results Part 3: Intermediate measures of the precision of a standard measurement method. ISO 14284:1996, Steel and iron Sampling and preparation of
37、samples for the determination of chemical composition. 3P r i n c i p l e Preheating of a test portion at low temperature and combustion of a test portion with accelerator at a high temperature in an induction furnace in a current of pure oxygen. Transformation of carbon into carbon dioxide and/or c
38、arbon monoxide. ENISO153492:20032 Measurement of infrared absorption of the carbon dioxide or carbon dioxide/carbon monoxide evolved from steel and carried by a current of pure oxygen. Calibration graph is established using sucrose or calcium carbonate. 4 Reagents During the analysis, unless otherwi
39、se stated, use only reagents of recognized analytical grade and only grade 3 water as specified in ISO 3696. 4.1 Water, free from carbon dioxide. Boil water for 30 min, bubble with oxygen (4.2) while cooling to room temperature for 15 min. Prepare just before use. 4.2 Oxygen, 99,95 % (m/m) minimum.
40、An oxidation catalyst copper(II) oxide or platinum tube heated to a temperature above 450 C shall be used prior to a purifying unit, when the presence of organic contaminants in the oxygen is suspected. 4.3 Pure iron, of known very low carbon content less than 0,000 3 % (m/m). 4.4 Suitable solvent,
41、appropriate for washing greasy or dirty test samples, e.g., acetone. 4.5 Accelerator, copper plate (see NOTE 1) or pellet type tin and granular tungsten mixture (see NOTE 2) of known very low carbon content less than 0,000 3% (m/m). NOTE 1 Copper plate (about 0,1 g/plate) should be used after the fo
42、llowing treatment. Heat the copper plate at 450 Ct o 600 C for 10 min in a current of oxygen or air and cool in a desiccator without grease. This treatment shall be carried out just before use. NOTE 2 Pellet type tin (about 0,2 g/pellet) and granular tungsten (only LECOCEL I is applicable) should be
43、 used after the following treatment. Heat the tungsten at 450 C in air for 10 min and cool in a desiccator without grease. Clean the tin for more than 5 min by use of hydrochloric acid in an ultrasonic cleaner, rinse in water and dry in air. These treatments shall be carried out just before use. 4.6
44、 Standard substances 4.6.1 Sucrose, standard solution. Weigh, to the nearest 0,1 mg, the seven masses of sucrose (C 12 H 22 O 11 ) (analytical standard grade) previously dried at 100 Ct o1 0 5 C for 2,5 h and cooled in a desiccator, indicated in Table 1 and transfer to seven 100 ml beakers. Add 30 m
45、l of water (4.1) to dissolve, transfer to seven 100 ml one-mark volumetric flasks quantitatively, dilute to the mark with water (4.1) and mix. ENISO153492:20033 Table 1 Standard solution series of sucrose Mass of sucrose Corresponding mass of added carbon Carbon content in 1 g of the test portion St
46、andard solution reference number g g% ( m/m) 10 a 00 2 0,010 0 4,21 0,000 42 3 0,025 0 10,53 0,001 05 4 0,060 0 25,26 0,002 53 5 0,120 0 50,53 0,005 05 6 0,180 0 75,79 0,007 58 7 0,240 0 101,1 0,010 11 a Zero member. 4.6.2 Calcium carbonate Dry calcium carbonate minimum assay: 99,9 % (m/m) at 180 C
47、for 1 h and cool in a desiccator before use. 4.7 Magnesium perchlorate Mg(ClO 4 ) 2 , particle size: from 0,7 mm to 1,2 mm. 4.8 Inert ceramic (attapulgus clay) impregnated with sodium hydroxide, particle size: from 0,7 mm to 1,2 mm. 5 Apparatus During the analysis, unless otherwise stated, use only ordinary laboratory apparatus. All laboratory glassware shall be class A, in accordance with ISO 648 or ISO 1042 as appropriate. The apparatus required for combustion in a high-frequency induction furnace and the subsequent infrared absorption measurement of the evolved carbon dioxide and/or ca
