SIST EN 10200:2013
(Main)Chemical analysis of ferrous materials - Determination of boron in steel - Spectrophotometric method
Chemical analysis of ferrous materials - Determination of boron in steel - Spectrophotometric method
This European Standard specifies a spectrophotometric method for the determination of boron in steel. The method is applicable to non-alloyed and alloyed steels with boron contents of 0,000 4 to 0,0120 % (m/m).
Chemische Analyse von Eisenwerkstoffen - Bestimmung von Bor in Stahl - Spektrophotometrisches Verfahren
Diese Europäische Norm legt ein spektralphotometrisches Verfahren zur Bestimmung von Bor in Stahl fest. Das Verfahren ist auf unlegierte und legierte Stähle mit Boranteilen von 0,000 4 % bis 0,012 0 % (m/m) anwendbar.
Analyse chimique des matériaux ferreux - Détermination du bore dans les aciers - Méthode spectrophotométrique
La présente Norme européenne spécifie une méthode pour la détermination de la teneur en bore dans les aciers par spectrophotométrie. La méthode est applicable aux aciers non alliés et aux aciers alliés avec des teneurs en bore de 0,000 4 à 0,012 0 % (m/m).
Kemična analiza železovih materialov - Določevanje bora in jekla - Spektrofotometrična metoda
Ta evropski standard določa spektrofotometrično metodo za določevanje bora v jeklu. Metoda se uporablja za nelegirana in legirana jekla z vsebnostjo bora od 0,0004 do 0,0120 % (m/m).
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Chemische Analyse von Eisenwerkstoffen - Bestimmung von Bor in Stahl - Spektrophotometrisches VerfahrenAnalyse chimique des matériaux ferreux - Détermination du bore dans les aciers - Méthode spectrophotométriqueChemical analysis of ferrous materials - Determination of boron in steel - Spectrophotometric method77.080.01Železne kovine na splošnoFerrous metals in general77.040.30Kemijska analiza kovinChemical analysis of metalsICS:Ta slovenski standard je istoveten z:EN 10200:2012SIST EN 10200:2013en,fr,de01-april-2013SIST EN 10200:2013SLOVENSKI
STANDARDSIST EN 10200:1991:2007-041DGRPHãþD
SIST EN 10200:2013
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10200
October 2012 ICS 77.040.30 Supersedes EN 10200:1991English Version
Chemical analysis of ferrous materials - Determination of boron in steels - Spectrophotometric method
Analyse chimique des matériaux ferreux - Détermination du bore dans les aciers - Méthode spectrophotométrique
Chemische Analyse von Eisenwerkstoffen - Bestimmung von Bor in Stahl - Spektrophotometrisches Verfahren This European Standard was approved by CEN on 17 August 2012.
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.
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B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10200:2012: ESIST EN 10200:2013
EN 10200:2012 (E) 2 Contents Page Foreword .3Introduction .41Scope .52Normative references .53Principle .54Reagents .55Apparatus .66Sampling .87Procedure .88Expression of results . 119Test report . 11Annex A (informative)
Precision data . 13Bibliography . 15 SIST EN 10200:2013
EN 10200:2012 (E) 3 Foreword This document (EN 10200:2012) has been prepared by 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 April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified above. CEN [and/or] CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 10200:1991. Since the previous edition, no technical changes have been made, but the text has been editorially revised. According to the CEN/CENELEC Internal Regulations, the national standards organisations 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. SIST EN 10200:2013
EN 10200:2012 (E) 4 Introduction The development of the method was carried out by a working group under French convenorship. The results of the inter-laboratory tests have shown that the determination of lower limit application of the method should be 0,000 4 % (m/m) boron, based on a relative deviation not exceeding 10 % within 66 % confidence limits. However, further work has shown that the method may be used for lower boron contents if a higher relative deviation is acceptable. SIST EN 10200:2013
EN 10200:2012 (E) 5 1 Scope This European Standard specifies a spectrophotometric method for the determination of boron in steels. The method is applicable to non-alloyed and alloyed steels with boron contents of 0,000 4 to 0,012 0 % (m/m). 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical composition (ISO 14284) 3 Principle Dissolution of a test portion in hydrochloric and nitric acids. Decomposition of boron compounds (nitrides, etc.) with orthophosphoric and sulphuric acids at 290 °C. Spectrophotometric measurement at a wavelength of 543 nm of the complex formed between boric acid and curcumin in buffered acetic medium. 4 Reagents During the analysis, use only reagents of recognised analytical grade and distilled water or water of equivalent purity. 4.1 Pure iron, free of boron or of known low boron content. 4.2. Crystalline sodium hypophosphite monohydrate (NaH2PO2.H2O). 4.3 Hydrochloric acid, HCl (ρ20 = 1,19 g/ml). 4.4 Nitric acid, HNO3 (ρ20 = 1,40 g/ml). 4.5 Sulphuric acid, H2SO4 (ρ20= 1,84 g/ml). 4.6 Orthophosphoric acid, H3PO4 (ρ20= 1,71g/ml). 4.7 Acetic acid free of aldehyde, CH3COOH (ρ20= 1,05 g/ml). Test for absence of aldehyde: Place 20 ml of the acetic acid (4.7) to be tested and 1 ml of a 1 g/l solution of potassium permanganate (KMnO4) into a 50 ml beaker. In the absence of aldehyde, the initial violet colour of the potassium permanganate will persist; otherwise the solution will become brown, easily identifiable after 15 min. SIST EN 10200:2013
EN 10200:2012 (E) 6 4.8 Mixture of acetic and sulphuric acids. Add in small portions whilst cooling under water and swirling, a volume of sulphuric acid (4.5) to an equal volume of acetic acid (4.7). 4.9 Acetic buffer solution. Dissolve 225 g of ammonium acetate in 400 ml of water. Add 300 ml of acetic acid (4.7). Filter the solution obtained into a 1 000 ml polyethylene one-mark volumetric flask. Dilute to the mark with water and mix. 4.10 Sodium fluoride, 40 g/l solution. 4.11 Boron, 100 mg/l standard solution. Dissolve 0,285 8 g of boric acid in water in a 500 ml one-mark volumetric flask. Dilute to the mark with water and mix. Store this solution in a polyethylene flask. 1 ml of this solution contains 0,1 mg of boron. 4.12 Boron, 2 mg/l standard solution. Transfer 20 ml of the boron standard solution (4.11) into a 1 000 ml one-mark volumetric flask. Dilute to the mark with water and mix. Store this solution in a polyethylene flask. 1 ml of this solution contains 2 µg of boron. 4.13 Curcumin, 1,25 g/l acetic solution (prepared immediately before use). Dissolve 0,125 g of curcumin in 60 ml of acetic acid (4.7) in a polyethylene or quartz vessel. Heat at 40 °C in a water bath and stir with a magnetic stirrer. After dissolution, cool and transfer into a 100 ml polyethylene one-mark volumetric flask. Dilute to the mark with acetic acid (4.7) and mix. 5 Apparatus Glassware containing boron shall not be used and shall be replaced by polyethylene and quartz vessel rinsed with acetic acid (4.7), then with water and finally dried. 5.1 100 ml quartz beakers, with quartz covers (outside dimensions: 51 mm diameter and 70 mm height). 5.2 Aluminium alloy blocks, allowing a temperature of 290 °C to be achieved and maintained in the test solutions throughout the fuming period. The block has holes designed to allow the location of the 100 ml quartz beakers and is heated by surface contact with a hotplate.
NOTE Diagrams of these blocks are shown in Figures 1 and 2. The dimensions of the holes should be adapted to the dimensions of the quartz beakers available.
5.3 50 ml polyethylene one-mark volumetric flasks. 5.4 100 ml polyethylene flasks. 5.5 Spectrophotometer, suitable for measuring absorbance at a wavelength of 543 nm, with 20 mm cells. SIST EN 10200:2013
EN 10200:2012 (E) 7 Dimensions in millimetres
NOTE Adapt the dimensions of the holes according to the dimensions of the beakers available. Figure 1 — Example of circular aluminium alloy heating block SIST EN 10200:2013
EN 10200:2012 (E) 8 Dimensions in millimetres
NOTE
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