SIST EN 10276-2:2004
(Main)Chemical analysis of ferrous materials - Determination of oxygen content in steel and iron - Part 2: Infrared method after fusion under inert gas
Chemical analysis of ferrous materials - Determination of oxygen content in steel and iron - Part 2: Infrared method after fusion under inert gas
This European Standard specifies an infrared method after fusion under inert gas for the determination of oxygen in steel and iron.
The method is applicable to oxygen contents between 0,0005 % (m/m) and 0,01 % (m/m).
Chemische Analyse von Eisenwerkstoffen - Bestimmung des Sauerstoffgehalts von Stahl und Eisen - Teil 2: Messung der Infrarotabsorption nach Aufschmelzen unter Inertgas
Diese Europäische Norm legt ein Verfahren zur Messung der Infrarotabsorption nach Aufschmelzen unter Inertgas zur Bestimmung des Sauerstoffgehaltes von Eisenwerkstoffen fest.
Das Verfahren ist bei Sauerstoffanteilen zwischen 0,000 5 % (m/m) und 0,01 % (m/m) anwendbar.
Analyse chimique des matériaux ferreux - Détermination de la teneur en oxygene de l'acier et de la fonte - Partie 2: Méthode par absorption dans l'infrarouge apres fusion sous gaz inerte
La présente Norme européenne spécifie une méthode de détermination de la teneur en oxygene de l'acier et de la fonte, par absorption dans l'infrarouge apres fusion sous gaz inerte.
La méthode est applicable a des teneurs en oxygene comprises entre 0,0005 % (m/m) et 0,01 % (m/m).
Chemical analysis of ferrous materials - Determination of oxygen content in steel and iron - Part 2: Infrared method after fusion under inert gas
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Chemical analysis of ferrous materials - Determination of oxygen content in steel and iron - Part 2: Infrared method after fusion under inert gasChemische Analyse von Eisenwerkstoffen - Bestimmung des Sauerstoffgehalts von Stahl und Eisen - Teil 2: Messung der Infrarotabsorption nach Aufschmelzen unter InertgasAnalyse chimique des matériaux ferreux - Détermination de la teneur en oxygene de l'acier et de la fonte - Partie 2: Méthode par absorption dans l'infrarouge apres fusion sous gaz inerteChemical analysis of ferrous materials - Determination of oxygen content in steel and iron - Part 2: Infrared method after fusion under inert gas77.040.30Kemijska analiza kovinChemical analysis of metalsICS:Ta slovenski standard je istoveten z:EN 10276-2:2003SIST EN 10276-2:2004en01-junij-2004SIST EN 10276-2:2004SLOVENSKI
STANDARD
SIST EN 10276-2:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10276-2July 2003ICS 77.040.30English versionChemical analysis of ferrous materials - Determination of oxygencontent in steel and iron - Part 2: Infrared method after fusionunder inert gasAnalyse chimique des matériaux ferreux - Détermination dela teneur en oxygène de l'acier et de la fonte - Partie 2:Méthode par absorption dans l'infrarouge après fusion sousgaz inerteChemische Analyse von Eisenwerkstoffen - Bestimmungdes Sauerstoffgehalts von Stahl und Eisen - Teil 2:Messung der Infrarotabsorption nach Aufschmelzen unterInertgasThis European Standard was approved by CEN on 7 May 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10276-2:2003 ESIST EN 10276-2:2004
EN 10276-2:2003 (E)2ContentsForeword.31Scope.42Normative references.43Principle.44Reagents and materials.45Apparatus.66Sampling.67Procedure.77.1General.77.2General instructions.77.3Test portion.77.4Blank test.77.5Calibration.87.6Preparation test.87.7Determination.87.7.1Method 1.87.7.2Method 2.88Expression of results.98.1Method of calculation.98.2Precision.109Test report.12Bibliography.13SIST EN 10276-2:2004
EN 10276-2:2003 (E)3ForewordThis document EN 10276-2:2003 has been prepared by Technical Committee ECISS/TC 20 “Methods ofchemical 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 identicaltext or by endorsement, at the latest by January 2004, and conflicting national standards shall be withdrawn atthe latest by January 2004.This document includes a Bibliography.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 10276-2:2004
EN 10276-2:2003 (E)41 ScopeThis European Standard specifies an infrared method after fusion under inert gas for the determination ofoxygen in steel and iron.The method is applicable to oxygen contents between 0,0005 % (m/m) and 0,01 % (m/m).2 Normative referencesThis 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 listedhereafter. For dated references, subsequent amendments to or revisions of any of these publications apply tothis European Standard only when incorporated in it by amendment or revision. For undated references thelatest edition of the publication referred to applies (including amendments).EN 10276-1Chemical analysis of ferrous materials – Determination of oxygenin steel and iron – Part 1: Sampling and preparation of steelsamples for oxygen determination.EN ISO 14284Steel and iron – Sampling and preparation of samples for thedetermination of chemical composition (ISO 14284:1996).3 PrincipleFusion of a test portion in a single-use graphite crucible under helium gas at a minimum temperature of2000° C. Combination of the oxygen from the sample with carbon from the crucible to form carbon monoxide.Eventually transformation of carbon monoxide into carbon dioxide.Measurement of infrared absorption of the carbon monoxide or dioxide and use of a calibration curve plottedusing the measurements obtained with potassium nitrate.4 Reagents and materialsDuring the analysis, unless otherwise stated, only reagents of recognised analytical grade shall be used. Thefollowing reagents and materials shall be used:4.1 Helium, high purity, total impurity content 0,0005 % (m/m).An oxidation catalyst [copper (II) oxide or platinum] tube heated to a temperature above 450 °C shall be usedprior to a purifying unit, when the presence of organic contaminants is suspected in the helium.4.2 Magnesium perchlorate, Mg (ClO4)2, (commercial designation: anhydrone), particle size from 1,2mm to 2,0 mm, or Anhydrous Calcium sulphate, (CaSO4), (commercial designation: drierite), particlesize from 0,6 mm to 0,85 mm.4.3 Sodium hydroxide on granulated support, (NaOH), (commercial designation: ascarite), particlesize from 0,7 mm to 1,2 mm.4.4 Copper oxide, CuO4.5 Platinum, PtSIST EN 10276-2:2004
EN 10276-2:2003 (E)54.6 Tin or nickel capsules, For example Æ 5 mm, length 13 mm, weight 160 mg, with low oxygen content,less than 0,1 mg/mg of oxygen.Cut off the upper part of the tin capsule to reduce the weight to 50 mg or the length to 8 mm.4.7 Water, high purity, deionized, prepared just before use.4.8 Potassium nitrate, KNO3, high purity, maximum total impurity content 0,0005 % (m/m).Dry before use at 100 °C to 105 °C for 2 h and allow to cool in a dessicator.4.9 Potassium nitrate stock solution, corresponding to 4 mg/ml of oxygen.Weigh, to the nearest 0,1 mg, 8,416 g of potassium nitrate (4.8).Place in a 100 ml beaker and dissolve in about 50 ml of water (4.7).Transfer quantitatively to a 1000 ml volumetric flask, dilute to the mark with water (4.7), and mix.1 ml of the potassium nitrate stock solution contains 4 mg of oxygen as potassium nitrate.4.10 Potassium nitrate diluted stock solution, corresponding to 0,4 mg/ml of oxygen.This solution shall be prepared freshly before use.Transfer 10 ml of the potassium nitrate stock solution in a 100 ml volumetric flask, dilute to the mark withwater (4.7), and mix.1 ml of the potassium nitrate stock solution contains 0,4 mg of oxygen as potassium nitrate.4.11 Potassium nitrate standard solutions.These solutions shall be prepared freshly before use.Transfer the volume listed in Table 1 of the potassium nitrate stock solution (4.9) and of the potassium nitratediluted stock solution (4.10) in a series of nine 100 ml volumetric flasks, dilute to the mark with water (4.7),and mix.100 ml of each of the potassium nitrate standard solutions contain the mass of oxygen (as potassium nitrate)listed in the last column of Table 1.SIST EN 10276-2:2004
EN 10276-2:2003 (E)6Table 1 — Potassium nitrate standard solutionsPotassium nitrat
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