SIST EN 10314:2003

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.WHPSHUDWXUDKVerfahren zur Ableitung von Mindestwerten der Dehngrenze von Stahl bei erhöhten TemperaturenMéthode de dérivation des valeurs minimales de la limite conventionnelle d'élasticité des aciers a températures élevéesMethod for the derivation of minimum values of proof strength of steel at elevated temperatures77.140.30Jekla za uporabo pod tlakomSteels for pressure purposesICS:Ta slovenski standard je istoveten z:EN 10314:2002SIST EN 10314:2003en01-april-2003SIST EN 10314:2003SLOVENSKI
STANDARDSIST ENV 22605-3:1997SIST ENV 22605-2:1997SIST ENV 22605-1:19971DGRPHãþD



SIST EN 10314:2003



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10314November 2002ICS 77.140.30Supersedes ENV 22605-1:1991, ENV 22605-2:1991 andENV 22605-3:1991English versionMethod for the derivation of minimum values of proof strength ofsteel at elevated temperaturesMéthode de dérivation des valeurs minimales de la limiteconventionnelle d'élasticité des aciers à températuresélevéesVerfahren zur Ableitung von Mindestwerten derDehngrenze von Stahl bei erhöhten TemperaturenThis European Standard was approved by CEN on 19 August 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,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10314:2002 ESIST EN 10314:2003



EN 10314:2002 (E)2ContentspageForeword.3Introduction.41Scope.52Normative references.53Terms and definitions.54Symbols.65Method.65.1 Input data groups.65.2 Ratio values.65.3 Minimum proof strength values.76Application of the method.86.1 Representative data groups.86.2 Number of data.86.3 Consistency of data.86.4 Result.9Bibliography.10SIST EN 10314:2003



EN 10314:2002 (E)3ForewordThis document (EN 10314:2002) has been prepared by the ECISS/TC 22 "Steels for pressurepurposes - Qualities", the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publicationof an identical text or by endorsement, at the latest by May 2003, and conflicting nationalstandards shall be withdrawn at the latest by May 2003.This document supersedes ENV 22605-1:1991, ENV 22605-2:1991 and ENV 22605-3:1991.This standard includes a Bibliography.According to the CEN/CENELEC Internal Regulations, the national standards organizationsof the following countries are bound to implement this European Standard: Austria, Belgium,Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and theUnited Kingdom.SIST EN 10314:2003



EN 10314:2002 (E)4IntroductionMinimum values for tensile properties are specified in European Standards for steels andother metals for elevated temperature service. Such values are used to determine designstrength values particularly where the materials are used in pressure systems.Two International Standards, ISO 2605-1 and ISO 2605-2 are available and have beenadopted by CEN as European Prestandards, ENV 22605-1 and ENV 22605-2. They set outprocedures, based on statistical assessments of bodies of data, for the derivation andverification of minimum values of 0,2% proof strength at elevated temperatures. Theseprocedures determine the minimum values from lower confidence lines. A third InternationalStandard, ISO 2605-3, adopted by CEN as ENV 22605-3, sets out procedures for determiningminimum values from the average trend behaviour of the property of interest as a function oftemperature.One of the purposes of the procedures in ISO 2605-1 and ISO 2605-2 (ENV 22605-1 andENV 22605-2) is to reduce the requirement for elevated temperature tensile acceptance testson individual products by organizations and manufacturers contributing data for assessment.Experience has shown that the procedures in ISO 2605-1 and ISO 2605-2 (ENV 22605-1 andENV 22605-2) have limitations affecting the relationship between derived minimum propertyvalues and the minima of the test data arising from the statistical and some subjectivedecisions at various stages of the procedures. They also require relatively large amounts ofdata to produce an acceptable level of accuracy.The procedure set out in ISO 2605-3 (ENV 22605-3) requires less data but because it isdesigned to always give conservative values from few data, it like the other procedures, cangive non-representative results. However, the principle of this procedure is considered to bemore realistic and is adopted as the basis of this European Standard; the objective being toproduce an assessment procedure for tensile property data which is simple to operate, givesrepresentative results and is usable in computerised form.This European Standard, replacing ENV 22605-1, -2 and -3, sets out a method for derivingminimum proof strength values for steels at elevated temperatures with the intention that suchvalues are specified in relevant product standards.This European Standard does not specify a verification procedure. Verification of tensileproperties at elevated temperatures is normally specified in the relevant product standardusing the minimum property values derived by the procedure established in this EuropeanStandard.The method proposed has been tested for proof strength values of steel. However, it isconsidered that the method can also be applied for other metals and for the derivation ofminimum values of tensile strength at elevated temperatures.SIST EN 10314:2003



EN 10314:2002 (E)51
ScopeThis European Standard specifies a method for deriving the minimum proof strength valuesfor steels at elevated temperatures.However, this standard does not specify a verification procedure.2
Normative referencesThis European Standard incorporates by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text, andthe publications are lis
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