SIST EN 1981:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Baker in bakrove zlitine – PredzlitineKupfer und Kupferlegierungen - VorlegierungenCuivre et alliages de cuivre - Alliages-meresCopper and copper alloys - Master alloys77.120.30Baker in bakrove zlitineCopper and copper alloysICS:Ta slovenski standard je istoveten z:EN 1981:2003SIST EN 1981:2004en01-januar-2004SIST EN 1981:2004SLOVENSKI
STANDARDSIST EN 1981:19991DGRPHãþD



SIST EN 1981:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1981February 2003ICS 77.120.30Supersedes EN 1981:1998English versionCopper and copper alloys - Master alloysCuivre et alliages de cuivre - Alliages-mèresKupfer und Kupferlegierungen - VorlegierungenThis European Standard was approved by CEN on 28 November 2002.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 1981:2003 ESIST EN 1981:2004



EN 1981:2003 (E)2ContentspageForeword.3Introduction.41Scope.52Normative references.53Terms and definitions.54Designations.54.1Material.54.2Product.65Ordering information.66Requirements.76.1Composition.76.2Product form.76.3Physical condition.77Sampling.87.1General.87.2Cast analysis.87.3Cases of dispute.88Methods of analysis.88.1Routine cast analysis.88.2Determination of chromium(II)-oxide in alloy CuCr10 (CM202E).88.3Cases of dispute.88.4Rounding of results.89Declaration of conformity and inspection documentation.99.1Declaration of conformity.99.2Inspection documentation.910Marking, labelling, packaging.9Annex A (normative)
Method for determination of chromium(III)-oxide in alloy CuCr10 (CM202E).14Bibliography.15SIST EN 1981:2004



EN 1981:2003 (E)3ForewordThis document (EN 1981:2003) has been prepared by Technical Committee CEN/TC 133 "Copper and copperal-loys", the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by August 2003, and conflicting national standards shall be withdrawn at the latest byAugust 2003.This document supersedes EN 1981:1998.In comparison with the first edition of EN 1981:1998, the following significant technical changes were made:a) Subclause 5 h) added;b) Compositions of the materials in Table 1 partially amended;c) CuMn20 (CM208E) and CuTi28 (CM235E) deleted;d) CuCo10 (CM237E), CuLi2 (CM123C), CuMg10 (CM238E), CuNi50 (CM239E), CuSi30(A) (CM240E),CuSi30(B) (CM241E), CuTi30 (CM244E), CuZr50(B) (CM242E), CuZr50(C) (CM243E) added.Annex A is normative.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun-tries 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 1981:2004



EN 1981:2003 (E)4IntroductionThis European Standard has been prepared at the suggestion of the manufacturers of cast and wrought copperalloys, by representatives of the producers and users of master alloys. There is, at present, no similar internationalstandard for copper-based master alloys.In several cases more than one grade of a particular master alloy is specified, having differing impurity limits, tosatisfy the requirements of various end products.SIST EN 1981:2004



EN 1981:2003 (E)51 ScopeThis European Standard specifies the compositions of copper-based master alloys intended for the manufacture,deoxidation, or desulfurization of cast or wrought alloys, especially those based on copper, supplied in the form ofingots, notched bar, notched slab (waffle plate), granules or broken pieces.A procedure is included for sampling the master alloys for analysis for verification of conformity to the compositionrequirements.A method for the determination of chromium(III)-oxide in chromium-copper master alloy is given in annex A.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 1655, Copper and copper alloys — Declarations of conformity.EN 10204, Metallic products — Types of inspection documents.NOTEInformative references to documents used in the preparation of this standard, and cited at the appropriate places inthe text, are listed in the bibliography.3 Terms and definitionsFor the purposes of this standard, the following terms and definitions apply:3.1master alloyalloy intended to add one or more elements to a melt3.2castproduct of one crucible, or one furnace, or one melt3.3batchportion of master alloy taken from one cast3.4consignmentcollection of products issued or received as one delivery, consisting of one or more batches of one master alloy4 Designations4.1 Material4.1.1 GeneralThe material is designated either by symbol or number (see Table 1).SIST EN 1981:2004



EN 1981:2003 (E)64.1.2 SymbolThe material symbol designation is based on the designation system given in ISO 1190-1.NOTEAlthough material symbol designations used in this standard might be the same as those in other standards usingthe designation system given in ISO 1190-1, the detailed composition requirements are not necessarily the same.4.1.3 NumberThe material number designation is in accordance with the system given in EN 1412.4.2 ProductThe product designation provides a standardised pattern of designation from which a rapid and unequivocaldescription of a product is conveyed in communication. It provides mutual comprehension at the international levelwith regard to products which meet the requirements of the relevant European Standard.The product designation is no substitute for the full content of the standard.The product designation for products to this standard shall consist of:¾ denomination (Copper master alloy);¾ number of this Europe
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