Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties

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.

Warmgewalzte schweißgeeignete Stäbe aus Stahl für Druckbehälter mit festgelegten Eigenschaften bei erhöhten Temperaturen

Diese Europäische Norm legt die technischen Lieferbedingungen für warmgewalzte, schweißgeeignete Stäbe aus Stahl für den Bau von Druckbehältern fest, die für den Einsatz bei erhöhter Temperatur bestimmt sind.
Für Erzeugnisse, die nach dieser Europäischen Norm geliefert werden, gelten zusätzlich die allgemeinen technischen Lieferbedingungen nach EN 10021.
ANMERKUNG   Nach Veröffentlichung dieser Norm im EU-Amtsblatt (OJEU) ist die Annahme ihrer Konformität mit den grundlegenden Anforderungen (ESR) der Richtlinie 97/23/EG auf die technischen Daten von Werkstoffen in dieser Europäischen Norm beschränkt, und es darf nicht angenommen werden, dass damit die Eignung des Werkstoffs für ein bestimmtes Ausrüstungsteil festgestellt ist. Folglich müssen die in dieser Werkstoffnorm angegebenen technischen Parameter im Hinblick auf die konstruktiven Anforderungen dieses bestimmten Ausrüstungsteils ermittelt werden, um damit zu verifizieren, dass den ESR der Richtlinie 97/23/EG entsprochen wird.

Barres laminées à chaud en acier soudables pour appareils à pression, avec des caractéristiques spécifiées aux températures élevées

La présente Norme européenne spécifie les conditions techniques de livraison des barres laminées à chaud en aciers soudables pour la construction des appareils à pression utilisés à des températures élevées.
Les conditions techniques générales de livraison de l'EN 10021 s'appliquent également aux produits livrés conformément à la présente Norme européenne.
NOTE   Dès lors que la présente Norme européenne est publiée dans le Journal Officiel de l’Union européenne (JO) en lien avec la Directive 97/23/CE, la présomption de conformité avec les exigences essentielles de sécurité de la Directive 97/23/CE se limite aux données techniques relatives aux matériaux spécifiées dans la présente Norme européenne et ne suppose pas l’adéquation des matériaux avec un appareil en particulier. Par conséquent, il doit être procédé à l’évaluation des données techniques spécifiées dans la présente norme de matériaux par rapport aux exigences relatives à la conception de cet équipement spécifique, afin de vérifier que les exigences essentielles de sécurité de la Directive relative aux équipements sous pression 97/23/CE sont satisfaites.

Vroče valjane jeklene palice, primerne za varjenje tlačnih posod, s specificiranimi lastnostmi pri povišanih temperaturah

Ta evropski standard določa tehnične dobavne pogoje za vroče valjane jeklene palice za konstrukcijo tlačne opreme za uporabo pri povišanih temperaturah.
Splošni tehnični dobavni pogoji v standardu EN 10021 se uporabljajo tudi za proizvode, dobavljene v skladu s tem evropskim standardom.
OPOMBA:   Ko bo ta evropski standard objavljen v Uradnem listu Evropske unije (OJEU) v okviru Direktive 97/23/ES, bodo zagotovila o skladnosti z osnovnimi varnostnimi zahtevami (ESR) Direktive 97/23/ES omejena na tehnične podatke o materialih, navedene v tem evropskem standardu, standard pa ne bo zagotavljal ustreznosti materiala za določen element opreme. Zato bo potrebno oceniti tehnične podatke, podane v tem standardu za materiale, glede na zahteve zasnove določenega elementa opreme, da se zagotovi, da so izpolnjene osnovne varnostne zahteve Direktive 97/23/ES o tlačni opremi.

General Information

Status
Published
Public Enquiry End Date
31-Jan-2013
Publication Date
15-Aug-2016
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
28-Jul-2016
Due Date
02-Oct-2016
Completion Date
16-Aug-2016

RELATIONS

Buy Standard

Standard
SIST EN 10273:2016
English language
30 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Warmgewalzte schweißgeeignete Stäbe aus Stahl für Druckbehälter mit festgelegten Eigenschaften bei erhöhten TemperaturenBarres laminées à chaud en acier soudables pour appareils à pression, avec des caractéristiques spécifiées aux températures élevéesHot rolled weldable steel bars for pressure purposes with specified elevated temperature properties77.140.60Jeklene palice in drogoviSteel bars and rods77.140.30Jekla za uporabo pod tlakomSteels for pressure purposesICS:Ta slovenski standard je istoveten z:EN 10273:2016SIST EN 10273:2016en,fr,de01-oktober-2016SIST EN 10273:2016SLOVENSKI

STANDARDSIST EN 10273:20081DGRPHãþD
SIST EN 10273:2016
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10273
July
t r s x ICS
y yä s v rä u râ
y yä s v rä x r Supersedes EN
s r t y uã t r r yEnglish Version

Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties Barres laminßes à chaud en acier soudable pour appareils à pressioná avec des caractßristiques spßcifißes aux tempßratures ßlevßes

Warmgewalzte schweißgeeignete Stäbe aus Stahl für Druckbehälter mit festgelegten Eigenschaften bei erhöhten Temperaturen This European Standard was approved by CEN on

s w April
t r s xä

egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä

translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä

CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä

EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels

t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN

s r t y uã t r s x ESIST EN 10273:2016

EN 10273:2016 (E) 2 Contents Page European foreword ...................................................................................................................................................... 4 1 Scope .................................................................................................................................................................... 5 2 Normative references .................................................................................................................................... 5 3 Terms and definitions ................................................................................................................................... 6 4 Dimensions and tolerances on dimensions ........................................................................................... 6 5 Calculation of mass ......................................................................................................................................... 6 6 Classification and designation ................................................................................................................... 7 6.1 Classification ..................................................................................................................................................... 7 6.2 Designation ....................................................................................................................................................... 7 7 Information to be supplied by the purchaser ....................................................................................... 7 7.1 Mandatory information ................................................................................................................................ 7 7.2 Options ................................................................................................................................................................ 7 7.3 Examples for ordering................................................................................................................................... 8 8 Requirements ................................................................................................................................................... 8 8.1 Steelmaking process ...................................................................................................................................... 8 8.2 Delivery condition .......................................................................................................................................... 8 8.3 Chemical composition ................................................................................................................................... 9 8.4 Mechanical properties .................................................................................................................................. 9 8.5 Surface condition ............................................................................................................................................ 9 8.6 Internal soundness ......................................................................................................................................... 9 8.7 Weldability ........................................................................................................................................................ 9 9 Inspection ........................................................................................................................................................ 10 9.1 Types of inspection and inspection documents ................................................................................. 10 9.2 Tests to be carried out ................................................................................................................................ 10 9.3 Retests, sorting and reprocessing ........................................................................................................... 10 10 Sampling ........................................................................................................................................................... 11 10.1 Frequency of testing..................................................................................................................................... 11 10.2 Selection and preparation of samples and test pieces .................................................................... 11 11 Test methods .................................................................................................................................................. 11 11.1 Chemical analysis .......................................................................................................................................... 11 11.2 Tensile test at room temperature ........................................................................................................... 12 11.3 Tensile test at elevated temperature..................................................................................................... 12 11.4 Impact test ....................................................................................................................................................... 12 11.5 Other testing ................................................................................................................................................... 13 12 Marking ............................................................................................................................................................ 13 Annex A (informative)

Guidelines for heat treatment .................................................................................. 24 Annex B (informative) Reference data on creep strain and creep rupture ........................................... 25 Annex C (informative)

Significant changes to the previous version EN 10273:2007 ........................ 28 Annex ZA (informative)

Relationship between this European Standard and the Essential Requirements of Directive 2014/68/EU .............................................................................................. 29 SIST EN 10273:2016

EN 10273:2016 (E) 3 Bibliography ................................................................................................................................................................. 30

SIST EN 10273:2016

EN 10273:2016 (E) 4 European foreword This document (EN 10273:2016) has been prepared by Technical Committee ECISS/TC 107 “Steels for pressure purposes”, 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 or by endorsement, at the latest by January 2017, and conflicting national standards shall be withdrawn at the latest by January 2017. 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 held responsible for identifying any or all such patent rights. This document supersedes EN 10273:2007. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of Directive 2014/68/EU. For relationship with Directive 2014/68/EU, see informative Annex ZA, which is an integral part of this document. 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, 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 10273:2016

EN 10273:2016 (E) 5 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 with thicknesses given in Table 5. 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 2014/68/EC, presumption of conformity to the Essential Safety Requirements (ESRs) of Directive 2014/68/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 are satisfied, needs to be done. . 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 10020:2000, Definition and classification of grades of steel EN 10021, General technical delivery conditions for steel products EN 10027-1, Designation systems for steels — Part 1: Steel names EN 10027-2, Designation systems for steels — Part 2: Numerical system 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 10221:1995, Surface quality classes for hot-rolled bars and rods — Technical delivery conditions EN 10308, Non destructive testing — Ultrasonic testing of steel bars EN ISO 148-1:2010, Metallic materials — Charpy pendulum impact test — Part 1: Test method (ISO 148-1:2009) SIST EN 10273:2016

EN 10273:2016 (E) 6 EN ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical testing (ISO 377) EN ISO 6892-1:2009, Metallic materials — Tensile testing — Part 1: Method of test at room temperature (ISO 6892-1:2009) EN ISO 6892-2:2011, Metallic materials — Tensile testing — Part 2: Method of test at elevated temperature (ISO 6892-2:2011) EN ISO 14284, Steel and iron — Sampling and preparation of samples for the determination of chemical composition (ISO 14284) CEN/TR 10261, Iron and steel — European standards for the determination of chemical composition 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 1 to entry: The symbol for this delivery condition and for the normalized condition is N. Note 2 to entry: Definition is deviating from EN 10052:1993. 3.2

quenching and tempering [as defined in EN 10052:1993] Note 1 to entry: Quenching and tempering (symbol QT) also includes direct quenching plus tempering. 3.3

purchaser person or organization that orders products in accordance with this European Standard Note 1 to entry: The purchaser is not necessarily, but may be, a manufacturer of pressure equipment. 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. SIST EN 10273:2016

EN 10273:2016 (E) 7 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. 6.2 Designation The steel grades are designated with steel names in accordance with EN 10027-1. The corresponding steel numbers have been allocated in accordance with EN 10027-2. 7 Information to be supplied by the purchaser 7.1 Mandatory information The following information shall be supplied by the purchaser at the time of enquiry and order: a) quantity required; b) shape of bars; c) nominal dimensions of the product; d) European Standard specifying tolerances on dimensions, shape and mass (see Clause 4 and Clause 5); e) number of this European Standard, i.e. EN 10273; f) steel name or number; g) delivery condition (see 8.2); h) inspection document to be issued (see 9.1.1). 7.2 Options A number of options are specified in this European Standard and listed below. If the purchaser does not indicate his wish to implement any of these options the products shall be supplied in accordance with the basic specification (see 7.1). 1) specification of the steelmaking process (see 8.1); 2) deviating delivery condition (see 8.2.1 and 8.2.3); 3) specification of a higher minimum chromium content (see Table 2, footnote h); 4) specification of a lower maximum copper content and a maximum tin content (see Table 2,

footnote i); 5) specification of a maximum carbon equivalent value (see 8.3.3 and Table 4); 6) special surface condition (see 8.5); 7) requirements for and verification of internal soundness (see 8.6); SIST EN 10273:2016

EN 10273:2016 (E) 8 8) delivery of data on suitable welding conditions (see 8.7.2); 9) product analysis (see Table 8, 10.1.1 and 11.1); 10) verification of proof strength Rp0,2 at an agreed elevated temperature (see Table 8 and 11.3); 11) verification of the impact energy at a temperature other than +20 °C (see 11.4); 12) special marking requirements (see 12.2). 7.3 Examples for ordering EXAMPLE 1 5 t bars, dimensional tolerances as specified in EN 10059, 50 mm x 50 mm, supplied in fixed lengths of 10 000 mm, made of the steel grade 16Mo3 (steel number 1.5415) in accordance with EN 10273, with inspection document 3.1 as specified in EN 10204: 5 t bars EN 10059 — 50 × 50 × 10000(F) – steel EN 10273 — 16Mo3 – inspection document 3.1 or 5 t bars EN 10059 — 50 × 50 × 10000(F) – steel EN 10273 — 1.5415 inspection document 3.1 EXAMPLE 2 2 t rounds, dimensional tolerances as specified in EN 10060, 75 mm diameter, supplied in exact lengths of 5 000 mm made of a steel grade 16Mo3 (steel number 1.5415) in accordance with EN 10273, surface quality class B in accordance with EN 10221; inspection document 3.1 as specified in EN 10204: 2 t rounds EN 10060 — 75x5000(E) – steel EN 10273 — 16Mo3 – EN 10221 — class B – inspection document 3.1 or 2 t rounds EN 10060 — 75x5000(E) – steel EN 10273 — 1.5415 EN 10221 — class B – inspection document 3.1 8 Requirements 8.1 Steelmaking process Unless a special steelmaking process is agreed at the time of enquiry and order, the steelmaking process shall be at the discretion of the manufacturer. 8.2 Delivery condition 8.2.1 Unless otherwise agreed at the time of enquiry and order, the products covered by this European Standard shall be supplied in the delivery condition given in Table 5. 8.2.2 Normalizing may be replaced by normalizing rolling for steel grades P235GH, P250GH, P265GH, P295GH, P355GH, P275NH, P355NH and P460NH. This means that the requirements have to be met even after subsequent normalizing after delivery (see 3.1). In the case of the grade P460NH delayed cooling or additional tempering may be necessary for small sections and in special cases. 8.2.3 Products made of steel grades P235GH, P250GH, P265GH, P295GH, P355GH, P275NH, P355NH, P460NH and 16Mo3 may also be delivered in the untreated condition if so agreed. (Annex A contains for the grades P...GH as well as for 16Mo3, 13CrMo4-5, 10CrMo9-10 and 11CrMo9-10 heat treatment information for the purchaser). SIST EN 10273:2016

EN 10273:2016 (E) 9 In these cases, the test pieces shall be tested in the delivery condition as indicated in Table 5. 8.3 Chemical composition 8.3.1 The cast analysis reported by the steel producer shall apply and comply with the requirements of Table 2. 8.3.2 The product analysis shall not deviate from the specified values for the cast analysis as specified in Table 2 by more than the values given in Table 3. 8.3.3 A maximum value for the carbon equivalent may be agreed upon at the time of enquiry and order for steel grades P235GH, P265GH, P295GH, P355GH, P275NH and P355NH. In this case, for the grades P275NH and P355NH the values given in Table 4 shall apply. 8.4 Mechanical properties The values given in Tables 5 to 7 shall apply for the specified heat treatment conditions and dimensions. NOTE Unless otherwise noted, the Rp0,2 values in Table 7 were derived in accordance with EN 10314. If by agreement (see 8.2.3) the products are supplied in a non-heat treated condition, the mechanical properties shall be obtainable from reference test pieces which have received the appropriate heat treatment (simulated heat treatment). Annex B gives preliminary data for the purchaser about creep strain and creep rupture properties of some steel grades covered by this European Standard. 8.5 Surface condition Slight surface imperfections, inherent in the production process, are permitted. If requirements for the surface condition are necessary, these may be agreed at the time of enquiry and order, where appropriate on the basis of EN 10221. 8.6 Internal soundness The products shall be sound and free from defects that preclude their intended use. Where appropriate, requirements relating to internal soundness together with the conditions for their verification (see 11.5.3 and Table 8) may be agreed at the time of enquiry and order. 8.7 Weldability 8.7.1 The steels specified in this European Standard are suitable for welding processes in current use (see NOTES 1 to 3 in 8.7.2). Information on welding is given in EN 1011-1 and EN 1011-2 (see Bibliography). 8.7.2 The manufacturer shall, if so agreed at the time of enquiry and order, provide the purchaser with data on suitable welding conditions determined on the basis of weld procedure tests. NOTE 1 With increasing product section and strength level cold cracking can occur. Cold cracking is caused by the following factors in combination: — amount of diffusible hydrogen in the weld metal; — microstructure of the heat affected zone; — residual stress concentrations in the welded joint. SIST EN 10273:2016

EN 10273:2016 (E) 10 NOTE 2 When using recommendations as laid down, for example in EN 1011–2, the recommended welding conditions of the steel grades can be determined depending on the product diameter or thickness, the applied welding energy, the design requirements, the electrode efficiency, the welding process and the weld metal properties NOTE 3 Inappropriate post weld heat treatment (PWHT) conditions may decrease the mechanical properties. It is therefore recommended that the purchaser seeks, at the time of enquiry and order, the advice of the manufacturer and considers, where appropriate, the verification of the mechanical properties on simulated post weld heat treated samples. 9 Inspection 9.1 Types of inspection and inspection documents 9.1.1 The compliance with the requirements of the order shall be checked for products in accordance with this European Standard by specific inspection. The purchaser shall specify the required type of inspection document (3.1 or 3.2) in accordance with EN 10204:2004. If an inspection document 3.1 is specified, the manufacturer shall operate a quality assurance system, certified by a competent Body established as legal entity within the European Union and having undergone a specific assessment for materials. If an inspection certificate 3.2 is specified, the purchaser shall notify the manufacturer of the name and address of the organization or person who is to carry out the inspection and produce the inspection document. It shall also be agreed which party shall issue the certificate. 9.1.2 The inspection certificate 3.1 or 3.2 shall include, in accordance with EN 10168:2004, the following codes and information: A Commercial transactions and parties involved; B Description of products to which the inspection certificate applies (including tempering temperature in the case of quenched and tempered or tempered products); C03 Test temperature; C10-C13 Tensile test at room temperature and, if applicable, at elevated temperatures; C40-C43 Impact test, if applicable; C50-C69 Hardness test, if applicable; C70 Steelmaking process; C71-C92 Cast analysis and, if applicable, product analysis; D01 Marking and dimensional checking and, if applicable, verification of the surface quality; D02-D99 Non-destructive tests, if applicable; Z Validation. 9.2 Tests to be carried out The mandatory and optional tests to be carried out, the size of the test units, and the number of samples and test pieces to be taken are specified in 10.1 and Table 8. 9.3 Retests, sorting and reprocessing For retests, sorting and reprocessing the requirements of EN 10021 shall apply. SIST EN 10273:2016

EN 10273:2016 (E) 11 10 Sampling 10.1 Frequency of testing 10.1.1 For the product analysis, unless otherwise agreed, one sample per cast shall be taken for determining the elements indicated with numerical values for the particular steel grade in Table 2. The permissible tolerances given in Table 3 shall apply. 10.1.2 The test unit for the tensile test at room temperature and the impact test shall be the batch of products or part thereof, at maximum 30 000 kg, coming from the same cast and having been heat treated in the same batch and in the same heat treatment facility1). The maximum diameter may be 1,25 times the smallest diameter in the batch, provided all diameters are within the same diameter range as specified in the corresponding tables of this European Standard (see Tables 5 and 7). For tensile test at elevated temperature, the test unit shall be the cast. One sample shall be taken for preparing the test pieces indicated in 10.2.2 from each test unit. 10.2 Selection and preparation of samples and test pieces 10.2.1 Sampling and sample preparation 10.2.1.1 Sampling and sample preparation shall be in accordance with the requirements of EN ISO 14284 and EN ISO 377. In addition, the requirements in 10.2.1.3 shall apply to the mechanical tests. 10.2.1.2 If, following agreement (see 8.2.3), the products are not to be delivered in a delivery condition in accordance with Table 5, the samples shall be heat treated to the specified condition prior to the test. 10.2.1.3 The samples shall be taken in accordance with Table 9 for the tensile test at room temperature, the tensile test at elevated temperature and the impact test. 10.2.2 Preparation of test pieces for mechanical tests 10.2.2.1 Circular test pieces for the tensile test at room temperature in accordance with EN ISO 6892-1 and, where applicable, for the tensile test at elevated temperature in accordance with EN ISO 6892-2 shall be prepared. 10.2.2.2 Longitudinal V-notched test pieces in accordance with EN ISO 148-1 shall be prepared for the impact test. The axis of the notch of impact test pieces shall be perpendicular to the surface of the product. 11 Test methods 11.1 Chemical analysis Unless otherwise agreed at the time of enquiry and order, the choice of a suitable physical or chemical analytical method for the product analysis shall be at the discretion of the manufacturer. In cases of

1) In the case of a continuous furnace or in process annealing, a batch is the lot heat treated without intermission with the same process parameters. SIST EN 10273:2016

EN 10273:2016 (E) 12 dispute, the analysis shall be carried out by a laboratory approved by both parties. In this case, the analysis method to be used shall be agreed taking into account the relevant existing European Standards. The list of available European Standards is given in CEN/TR 10261. 11.2 Tensile test at room temperature The tensile test at room temperature shall be carried out as specified in EN ISO 6892-1, using a proportional test piece of gauge length L0 = 5,65 0S (S0 = initial cross-sectional area of the gauge length). The yield strength to be determined shall be the upper yield strength ReH or, if this is not pronounced, the proof strength Rp0,2. 11.3 Tensile test at elevated temperature The tensile test for verification of proof strength Rp0,2 at elevated temperature shall be determined as specified in EN ISO 6892-2. Unless a test temperature for which values are specified has been agreed, the test shall be carried out at 300 °C. 11.4 Impact test The impact test shall be carried out in accordance with EN ISO 148-1:2010 at 20 °C (unless otherwise agreed), on V-notched test pieces and by using a 2 mm striker (KV2). The minimum impact values given apply for the mean of three test pieces. One individual value may be lower than the specified value provided that it is not less than 70 % of this value. If the above conditions are not met, an additional set of three test pieces shall be taken from the same sample and shall be tested. In order to regard the test unit as acceptable after testing the second set, the following requirements shall be met: a) mean value of six tests shall be equal to or greater than the specified value; b) not more than two of the six individual values shall be less than the specified value; c) not more than one of the six individual values shall be less than 70 % of the specified value. If these requirements are not met, the sample product shall be rejected and re-tests shall be carried out on the remainder of the test unit. According to the dimensions of the products the size of the impact test piece shall be in accordance with the following table:

SIST EN 10273:2016

EN 10273:2016 (E) 13 Table 1 — Size of the impact test pieces Test piece size Round cross section Rectangular cross section Product width

10 mm Nominal diameter / Nominal thickness (mm) No test required d < 12 b < 6 Standard test pieces or test pieces with reduced widths at the discretion of the manufacturer.

The largest width possible has to be chosen. 12
¶ d < 15 6
¶ b < 12 Standard 10 mm x 10 mm test pieces d
· 15 b

· 12 Where test pieces with reduces width are used, the minimum impact energy values given shall be reduced in proportion to the cross-sectional area of the test piece. 11.5 Other testing 11.5.1 The dimensions of the products shall be checked. 11.5.2 The surface condition of the products shall be checked for conformity with 8.5 by visual examination

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.