EN 10273:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hot rolled weldable steel bars for pressure purposes with specified elevated temperature propertiesBarres laminés a chaud en aciers soudables pour appareils a pression avec des caractéristiques spécifiées aux températures élevéesWarmgewalzte schweißgeeignete Stäbe aus Stahl für Druckbehälter mit festgelegten Eigenschaften bei erhöhten TemperaturenTa slovenski standard je istoveten z:EN 10273:2007SIST EN 10273:2008en,de77.140.60Jeklene palice in drogoviSteel bars and rods77.140.30Jekla za uporabo pod tlakomSteels for pressure purposesICS:SIST EN 10273:20001DGRPHãþDSLOVENSKI
STANDARDSIST EN 10273:200801-februar-2008

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10273December 2007ICS 77.140.30; 77.140.60Supersedes EN 10273:2000
English VersionHot rolled weldable steel bars for pressure purposes withspecified elevated temperature propertiesBarres laminées à chaud en acier soudables pour appareilsà pression, avec des caractéristiques spécifiées auxtempératures élevéesWarmgewalzte schweißgeeignete Stäbe aus Stahl fürDruckbehälter mit festgelegten Eigenschaften bei erhöhtenTemperaturenThis European Standard was approved by CEN on 21 October 2007.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 CEN 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10273:2007: E

Guidelines for heat treatment.23 Annex B (informative) Reference data on creep strain and creep rupture.24 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC.26 Bibliography.27

The clauses marked with a point (•) contain information relating to agreements which are to be made at the time of enquiry and order. The clauses marked by two points (••) contain information relating to agreements that may be made at the time of enquiry and order. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

1 Scope This European Standard specifies the technical delivery conditions for hot rolled weldable steel bars for the construction of pressure equipment for use at elevated temperatures. The general technical delivery conditions in EN 10021 also apply to products supplied in accordance with this European Standard. NOTE Once this European Standard is published in the Official Journal of the European Union (OJEU) under Directive 97/23/EC, presumption of conformity to the Essential Safety Requirements (ESRs) of Directive 97/23/EC is limited to technical data of materials in this European Standard and does not presume adequacy of the material to a specific item of equipment. Consequently, the assessment of the technical data stated in this material standard against the design requirements of this specific item of equipment to verify that the ESRs of the Pressure Equipment Directive 97/23/EC are satisfied, needs to be done. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 10002-1:2001, Metallic materials — Tensile testing — Part 1: Method of test at ambient temperature EN 10002-5:1991, Metallic materials — Tensile testing — Part 5: Method of testing at elevated temperatures EN 10020:2000, Definition and classification of grades of steel EN 10021:2006, General technical delivery conditions for steel products EN 10045-1:1990, Metallic materials
Charpy impact test
Part 1: Test method EN 10052:1993, Vocabulary of heat treatment terms for ferrous products EN 10058, Hot rolled flat steel bars for general purposes
Dimensions and tolerances on shape and dimensions EN 10059, Hot rolled square steel bars for general purposes
Dimensions and tolerances on shape and dimensions EN 10060, Hot rolled round steel bars for general purposes
Dimensions and tolerances on shape and dimensions EN 10061, Hot rolled hexagon steel bars for general purposes
Dimensions and tolerances on shape and dimensions EN 10079:2007, Definition of steel products EN 10168:2004, Steel products
Inspection documents
List of information and description EN 10204:2004, Metallic products
Types of inspection documents EN 10221, Surface quality classes for hot-rolled bars and rods
Technical delivery conditions
Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997) EN ISO 14284, Steel and iron
Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 10020:2000, EN 10052:1993, EN 10079:2007 and the following apply. 3.1
normalizing rolling
rolling process in which the final deformation process is carried out in a certain temperature range leading to a material condition equivalent to that obtained after normalizing so that the specified values of the mechanical properties are retained even after normalizing NOTE
The symbol for this delivery condition and for the normailised condition is N. [deviating from EN 10052:1993] 3.2
quenching and tempering
[as defined in EN 10052:1993] NOTE Quenching and tempering (symbol QT) also includes direct hardening plus tempering 3.3
purchaser person or organization that orders products in accordance with this European Standard. The purchaser is not necessarily, but may be, a manufacturer of pressure equipment in accordance with the EU Directive listed in Annex ZA NOTE Where a purchaser has responsibilities under this EU Directive, this European Standard will provide a presumption of conformity with the essential requirements of the Directive so identified in Annex ZA. 4  Dimensions and tolerances on dimensions The nominal dimensions and tolerances on dimensions shall be agreed at the time of enquiry and order with reference to the relevant dimensional standard EN 10058, EN 10059, EN 10060 or EN 10061. 5 Calculation of mass A density of 7,85 kg/dm3 shall be used as the basis for the calculation of the nominal mass from the nominal dimensions of all steel grades. 6 Classification and designation 6.1 Classification According to EN 10020 the steel grades P235GH, P250GH, P265GH, P295GH, P355GH, P275NH and P355NH are non-alloy quality steels. All other steel grades are alloy special steels.
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