CEN TR 10317-2013 European certified reference materials (EURONORM-CRMs) for the determination of the chemical composition of iron and steel products prepared under the auspices ofa.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationPD CEN/TR 10317:2013European certified referencematerials (EURONORM-CRMs)for the determination of thechemical composition of ironand steel products preparedunder the auspices of

2、theEuropean Committee for Ironand Steel Standardization(ECISS)Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD CEN/TR 10317:2013 PUBLISHED DOCUMENTNational forewordThis Publish

3、ed Document is the UK implementation ofCEN/TR 10317:2013. It supersedes PD CEN/TR 10317:2009 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/102, Methods of Chemical Analysis for Iron and Steel. A list of organizations represented on this committee c

4、an beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013.Published by BSI Standards Limited 2013.ISBN 978 0 580 78124 7 ICS 71.040.30; 77.

5、150.10 Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 31 March 2013. Amendments issued since publicationDate T e x t a f f e c t e dCopyright European Committee

6、 for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD CEN/TR 10317:2013TECHNICAL REPORT RAPPORT TECHNIQUE TECHNISCHER BERICHT CEN/TR 10317 February 2013 ICS 71.040.30; 77.150.10 Supersedes CEN/TR 10317:2009Eng

7、lish Version European certified reference materials (EURONORM-CRMs) for the determination of the chemical composition of iron and steel products prepared under the auspices of the European Committee for Iron and Steel Standardization (ECISS) Matriaux de rfrence certifis europens (EURONORM-MRC) desti

8、ns la dtermination de la composition chimique des produits en acier et en fonte prpars sous les auspices du comit europen de normalisation du fer et de lacier (ECISS) Europische zertifizierte Referenzmaterialien (EURONORM-ZRMs) fr die Bestimmung der chemischen Zusammensetzung von Eisen- und Stahlerz

9、eugnissen, hergestellt unter der Schirmherrschaft des Europischen Komitees fr Eisen- und Stahlnormung (ECISS) This Technical Report was approved by CEN on 27 August 2012. It has been drawn up by the Technical Committee ECISS/TC 102. CEN members are the national standards bodies of Austria, Belgium,

10、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

11、, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No

12、. CEN/TR 10317:2013: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD CEN/TR 10317:2013CEN/TR 10317:2013 (E) 2 Contents Page Foreword . 3 Introduction 4 1 Scope 5 2 Classifica

13、tion of EURONORM-CRMs . 5 3 Preparation of the samples 6 3.1 EURONORM-CRMs of cast and wrought materials 6 3.2 EURONORM-CRMs of non-metallic materials . 7 4 Certification 7 4.1 Main rules . 7 4.2 Main content of the certificates . 7 5 Sample presentation 9 6 Distribution of EURONORM-CRMs 9 7 Details

14、 of current EURONORM-CRMs . 10 Bibliography 11 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD CEN/TR 10317:2013CEN/TR 10317:2013 (E) 3 Foreword This document (CEN/TR 10317:20

15、13) 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. 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

16、held responsible for identifying any or all such patent rights. This document supersedes CEN/TR 10317:2009. In comparison with the previous edition of CEN/TR 10317:2009, the following significant technical changes were made: Clause 2, definition of Certified Reference Material; in 5.1, change of the

17、 procedure how to carry out the four required determination. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD CEN/TR 10317:2013CEN/TR 10317:2013 (E) 4 Introduction ln accordanc

18、e with the definition in ISO Guide 30, Amendment 1:2008, a Certified Reference Material (CRM) described in this CEN Technical Report is a “reference material characterized by a metrologically valid procedure for one or more specified properties, accompanied by a certificate that provides the value o

19、f the specified property, its associated uncertainty, and a statement of metrological traceability“. Furthermore, it is accompanied by a certificate issued by the producing organisation on behalf of the Co-ordinating Committee (COCOR) of ECISS after approval by the participating laboratories and all

20、 the producing organisations: a) France: 1) ArcelorMittal Maizires former Institut de Recherches de la Sidrurgie Franaise (IRSID), 2) Centre Technique des Industries de la Fonderie (CTIF); b) Germany: Iron and Steel CRM Working Group (AGZRM) comprising: 1) BAM Bundesanstalt fr Materialforschung und

21、-prfung, 2) Max-Planck-Institut fr Eisenforschung (MPI), 3) Stahlinstitut VDEh; c) Nordic Countries: Nordic CRM Working Group, (NCRMWG) comprising: 1) Swerea KIMAB former Swedish Institute for Metals Research (SIMR), 2) Jernkontoret; d) United Kingdom: Bureau of Analysed Samples Limited (BAS). Since

22、 1968 EURONORM-CRMs have been analysed by laboratories in most countries in the European Union (EU) or former European Community (EC). Pending their eventual replacement by EURONORM-CRMs, a number of former national CRMs prepared, analysed and certified by laboratories in Germany, France and the Uni

23、ted Kingdom respectively, were accepted as EURONORM-CRMs after their accuracy had been checked by other European laboratories. This procedure ceased in 1990. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted w

24、ithout license from IHS-,-,-PD CEN/TR 10317:2013CEN/TR 10317:2013 (E) 5 1 Scope This Technical Report describes the classification, method of sample preparation, certification main rules and certificate content of the EURONORM-CRMs. It also lists the sample presentation of the corresponding producer

25、s organisations and the distributing sources. 2 Classification of EURONORM-CRMs EURONORM-CRMs, prepared under the auspices of ECISS, are classified into two main groups: cast and wrought materials: irons, steels, special alloys and ferro-alloys; non-metallic materials: raw materials (ores, concentra

26、tes, additives and refractories) and by-products (slags, dusts and similar materials). Besides this first generic classification, EURONORM-CRMs are grouped into the following categories: a) From 001 to 099 high purity irons and unalloyed steels Normally no element has a mass content greater than the

27、 limit values in the following list: 1) silicon, limit value 1,0 %; 2) manganese, limit value 1,5 %; 3) chromium and nickel, limit value for each 0,5 %; 4) cobalt, copper and tungsten, limit value for each 0,3 %; 5) other elements, limit value for each 0,10 %; 6) boron, carbon, phosphorus, lead and

28、sulphur, no limit value. b) From 101 to 199 low alloy steels The content of one or more elements is greater than the limit for unalloyed steels but none exceeds 5 %. The sum of these alloying elements remains under 10 %. c) From 201 299 highly alloyed steels The content of one or more elements is gr

29、eater than 5 % or the sum of all these alloying elements is at least 10 %. Nevertheless the iron content will normally be greater than 50 %. d) From 301 to 399 - special alloys The iron content is less than 50 %. e) From 401 to 499 pig irons and cast irons f) From 501 to 599 ferro-alloys g) From 601

30、 to 699 ores, concentrates, sinters and miscellaneous materials Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD CEN/TR 10317:2013CEN/TR 10317:2013 (E) 6 h) From 701 to 799 add

31、itives and refractories i) From 801 to 899 by-products, such as slags, dusts and similar materials The expression “-1“ after a CRM number refers to the first issue of a CRM and “-2“, “-3“ etc. refer to replacement CRMs of generally similar composition, but not to a further bottling of the original C

32、RM. NOTE This classification is used as a simple and convenient method of differentiating between samples of different types of materials. It has no other objective and does not replace existing European or International product specifications for metallic materials. 3 Preparation of the samples 3.1

33、 EURONORM-CRMs of cast and wrought materials 3.1.1 High purity irons, steels and special alloys The material is obtained as cylindrical, square or rectangular billets or slabs. After the homogeneity has been verified, it is machined dry (avoiding excessive heat generation) on a suitable lathe or mil

34、ling machine in order to produce short chips; the chips are screened so that the fines can be removed. Some steel samples are produced by atomisation of the liquid metal. The whole preparation process provides a batch of generally more than 100 kg. This is blended in a cylindrical or cube shaped mix

35、er before certification analysis. Samples supplied in disc form are prepared from the most homogeneous parts of the rolled or forged material. If the finely divided sample is prepared by atomisation of the liquid metal, disc samples may be prepared by hot isostatic pressing of the powder. This proce

36、ss has been used where it is difficult to obtain homogeneous solid material for spectroscopic analysis by casting or forging. In all cases it is verified that the solid and finely divided samples are identical in chemical composition. 3.1.2 Pig irons and cast irons The metal in the form of solid or

37、hollow cylinders is descaled; its homogeneity is verified and then it is dry machined on a lathe. The turnings are separated into three sieve fractions, the dust being continually drawn off. Only the middle fraction is retained and homogenised before certification analysis and bottling. Some iron sa

38、mples are produced by crushing the solid material or by atomisation of the liquid metal. 3.1.3 Ferro-alloys A bulk supply (usually more than 100 kg) of ferro-alloy material taken from production is crushed and ground to a suitable particle size. As there is the possibility with such material for the

39、 composition to vary with particle size, homogeneity checks are carried out on several size fractions of the bulk material. Only those size fractions which are sufficiently similar to each other with respect to chemical composition are selected, and these are blended in a cube shaped or cylindrical

40、mixer made of stainless steel to produce the homogeneous product to be used to produce the CRM. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PD CEN/TR 10317:2013CEN/TR 10317:2

41、013 (E) 7 3.2 EURONORM-CRMs of non-metallic materials 3.2.1 Ores, Concentrates, Sinters and Miscellaneous Materials: Additives and Refractories The material is selected in such a way that it has the best composition and storage properties. After drying, crushing and grinding, it is screened to a sui

42、table particle size and blended in a cube shaped or cylindrical mixer made of stainless steel. The bulk sample is carefully stored in airtight containers. Where necessary a moisture absorber is placed inside the container. Throughout the whole preparation process the homogeneity is verified. 3.2.2 B

43、y-products, such as slags, dusts and similar materials The same rules apply for the preparation of the samples as for materials listed under 4.2.1. The certification analysis can only be carried out after a long stabilisation period, during which the composition is verified by means of numerous chec

44、k analyses. 4 Certification 4.1 Main rules The certification of these EURONORM-CRMs is performed following the established guidelines in ISO Guides 30, 31, 34 and 35 and the standard ISO 11459 (see Bibliography). Chemical characterisation of a candidate material is carried out in a certification int

45、erlaboratory comparison with approximately 20 laboratories from industry and research in Europe. Each laboratory is requested to analyse the elements to be determined four times under repeatability conditions but on separate portions of the sample, using a suitable analytical method of its choice. A

46、 statistical evaluation is carried out on all the individual values obtained for each element in order to confirm that they are distributed normally about the overall mean and to identify any outlying values. The aim, for certification of all elements or constituents is that, after elimination of st

47、atistical outliers, there remain at least 14 acceptable mean values, if possible achieved from different analytical methods. Certification with less than 14 acceptable mean values, but not less than ten, is also possible in situations where the concentration of the certified constituent is less than

48、 10 g/g or where the constituent is considered difficult to analyse. 4.2 Main content of the certificates 4.2.1 General Each certificate presents a table, in which the laboratory means are presented together with the mean of the intralaboratory means, MM, the standard deviation of the intralaboratory means, SMand the intralaboratory standard deviation, Sw. The half-width confidence interval C (95 %) of the certified mass content (also reported in each certificate) is calculated from the formula: nS t %) C(95M= Copyright European Committee for Standardization Provided by IHS under license wit