SIST EN 10272:2016
(Main)Stainless steel bars for pressure purposes
Stainless steel bars for pressure purposes
This document specifies the technical delivery conditions for hot and cold formed stainless steel bars for the construction of pressure equipment supplied in accordance with one of the process routes and surface finishes listed in Table 5.
The general technical delivery conditions in EN 10021 also apply.
NOTE Once this European Standard is published in the EU Official Journal (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 Directive 97/23/EC are satisfied, needs to be done.
Stäbe aus nichtrostendem Stahl für Druckbehälter
Dieses Dokument legt die technischen Lieferbedingungen für warm und kaltgeformte Stäbe aus nicht- rostenden Stählen für Druckbehälter nach einer der in Tabelle 5 angegebenen Ausführungsarten und Oberflächenbeschaffenheiten fest.
Zusätzlich gelten die allgemeinen technischen Lieferbedingungen nach EN 10021.
ANMERKUNG Nach Veröffentlichung dieser Europäischen Norm im EU Amtsblatt (OJEU) unter der Richtlinie 97/23/EG 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 en acier inoxydable pour appareils à pression
Le présente document spécifie les conditions techniques de livraison des barres en acier inoxydable formées à chaud et à froid destinées à la construction des appareils à pression, livrées conformément à l'une des gammes de fabrication et à l'un des états de surface énumérés au Tableau 5.
Les conditions générales techniques de livraison spécifiées par la norme EN 10021 s’appliquent également.
NOTE Dès lors que la présente Norme européenne est citée 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 97/23/CE sont satisfaites.
Nerjavne jeklene palice za tlačne posode
Ta dokument določa tehnične pogoje dobave za vroče ali hladno oblikovane nerjavne jeklene palice za konstrukcijo tlačne opreme, dobavljene v skladu z eno od procesnih poti in površinskih obdelav, navedenih v preglednici 5.
Uporabljajo se tudi splošni tehnični dobavni pogoji iz standarda EN 10021.
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.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Stäbe aus nichtrostendem Stahl für DruckbehälterBarres en acier inoxydable pour appareils à pressionStainless steel bars for pressure purposes77.140.60Jeklene palice in drogoviSteel bars and rods77.140.30Jekla za uporabo pod tlakomSteels for pressure purposes77.140.20Visokokakovostna jeklaStainless steelsICS:Ta slovenski standard je istoveten z:EN 10272:2016SIST EN 10272:2016en,fr,de01-oktober-2016SIST EN 10272:2016SLOVENSKI
STANDARDSIST EN 10272:20071DGRPHãþD
SIST EN 10272:2016
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 10272
July 2016 ICS 77.140.30; 77.140.60 Supersedes EN 10272:2007
English Version
Stainless steel bars for pressure purposes
Barres en acier inoxydable pour appareils à pression
Stäbe aus nichtrostendem Stahl für Druckbehälter This European Standard was approved by CEN on 15 April 2016.
This European Standard was corrected and reissued by the CEN-CENELEC Management Centre on 2016-07-27.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of 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 United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17,
B-1000 Brussels © 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 10272:2016 E SIST EN 10272:2016
EN 10272:2016 (E) 2 Contents Page European foreword . 4 Introduction . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 7 4 Dimensions and tolerances on dimensions . 7 5 Calculation of mass . 7 6 Classification and designation . 8 6.1 Classification . 8 6.2 Designation . 8 7 Information to be supplied by the purchaser . 8 7.1 Mandatory information . 8 7.2 Options . 8 7.3 Example of ordering. 9 8 Requirements . 9 8.1 Steelmaking process . 9 8.2 Delivery condition . 9 8.3 Chemical composition . 9 8.4 Corrosion resistance . 10 8.5 Mechanical properties . 10 8.6 Surface quality . 10 8.7 Internal soundness . 10 8.8 Weldability . 10 8.9 Physical properties . 10 9 Inspection . 11 9.1 Types of inspection and inspection documents . 11 9.2 Tests to be carried out . 11 9.3 Frequency of testing. 11 9.4 Re-tests, sorting and reprocessing . 11 9.5 Sampling and preparation of samples and test pieces . 12 9.6 Test methods . 12 9.6.1 Chemical analysis . 12 9.6.2 Tensile test . 12 9.6.3 Impact test . 12 9.6.4 Other tests . 13 10 Marking . 13 Annex A (informative)
Guidelines for further treatment (including heat treatment) in fabrication . 31 Annex B (informative)
Tensile strength of austenitic-ferritic steels at elevated temperatures . 35 Annex C (informative)
Reference data of strength values for creep rupture. 36 SIST EN 10272:2016
EN 10272:2016 (E) 3 Annex D (informative)
Significant changes to the previous version EN 10272:2007 . 37 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of Directive 2014/68/EU . 38 Bibliography . 39
SIST EN 10272:2016
EN 10272:2016 (E) 4 European foreword This document (EN 10272:2016) 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. This document supersedes EN 10272:2007. 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 EU Directive(s). For relationship with EU Directive(s), 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 10272:2016
EN 10272:2016 (E) 5 Introduction The European Committee for Standardization (CEN) draws attention to the fact that it is claimed that compliance with this document may involve the use of patents concerning two steel grades given in 10.2, Annex A and Annex B. CEN takes no position concerning the evidence, validity and scope of this patent right. The holder of this patent right has assured CEN that he/she is willing to negotiate licences either free of charge or under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the holder of this patent right is registered with CEN. Information may be obtained from:
Outokumpu OYJ FI – 02200 Espoo, Finland for steel grades 1.4162 and 1.4662 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified above. CEN shall not be held responsible for identifying any or all such patent rights. CEN and CENELEC maintain online lists of patents relevant to their standards. Users are encouraged to consult the lists for the most up to date information concerning patents (ftp://ftp.cencenelec.eu/EN/IPR/Patents/IPRdeclaration.pdf).
SIST EN 10272:2016
EN 10272:2016 (E) 6 1 Scope This European Standard specifies the technical delivery conditions for hot and cold formed stainless steel bars for the construction of pressure equipment supplied in accordance with one of the process routes and surface finishes listed in Table 6. The general technical delivery conditions in EN 10021 also apply. NOTE Once this European Standard is published in the Official Journal of the European Union (OJEU) under Directive 2014/68/EU, presumption of conformity to the Essential Safety Requirements (ESRs) of Directive 2014/68/EU 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 10088-1:2014, Stainless steels — Part 1: List of stainless steels 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 10278, Dimensions and tolerances of bright steel products EN 10308, Non destructive testing — Ultrasonic testing of steel bars SIST EN 10272:2016
EN 10272:2016 (E) 7 EN ISO 148-1:2010, Metallic materials — Charpy pendulum impact test — Part 1: Test method (ISO 148-1:2009) EN ISO 377, Steel and steel products — Location and preparation of samples and test pieces for mechanical testing (ISO 377) EN ISO 3651-2, Determination of resistance to intergranular corrosion of stainless steels — Part 2: Ferritic, austenitic and ferritic-austenitic (duplex) stainless steels — Corrosion test in media containing sulfuric acid (ISO 3651-2) EN ISO 6506-1, Metallic materials - Brinell hardness test — Part 1: Test method (ISO 6506-1) 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) ISO 286-1, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes — Part 1: Basis of tolerances, deviations and fits CEN/TR 10261, Iron and steel — European standards for the determination of chemical composition 3 Terms and definitions For the purpose of this document the terms and definitions given in EN 10020:2000, EN 10052:1993, EN 10079:2007, EN 10088-1:2014 and the following apply. 3.1 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. 3.2 cryogenic temperature temperature lower than –75 °C used in the liquefaction of gases 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, EN 10061, EN 10278 or ISO 286-1. If the relevant standard offers the purchaser certain options, e.g. regarding tolerance classes, specific information on these aspects shall additionally be given. 5 Calculation of mass When calculating the nominal mass from the nominal dimensions the values given in EN 10088-1 shall be used as a basis for the density of the steel concerned. SIST EN 10272:2016
EN 10272:2016 (E) 8 6 Classification and designation 6.1 Classification Steels covered by this document are classified according to their metallographic structure into: — ferritic steels; — martensitic steels; — austenitic steels; — austenitic-ferritic (duplex) steels. NOTE For more details see EN 10088–1. 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 to be delivered (mass, length, number of pieces); b) shape of bar; c) nominal dimensions of the product; d) number of the standard specifying the tolerances on dimensions, shape and mass (see Clause 4 and Clause 5); e) number of this European Standard, i.e. EN 10272; f) steel name or steel number; g) delivery condition (see 8.2); h) process route and surface finish (see Table 6); i) type of inspection certificate in accordance with EN 10204 (see 9.1.1). 7.2 Options A number of options are specified in this document and listed below. If the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the product shall be supplied in accordance with the basic specifications (see 7.1). 1) specification of the steelmaking process (see 8.1); 2) tighter carbon ranges for martensitic steels (see Table 2, footnote b); SIST EN 10272:2016
EN 10272:2016 (E) 9 3) specification of a controlled sulfur content (see Table 2, footnote c or Table 3, footnote b); 4) verification of resistance to intergranular corrosion (see 8.4, 9.6.4.1 and Table 14); 5) verification of tensile properties at elevated temperature (see 8.5.2, 9.6.2.2 and Table 14); 6) verification of product analysis (see 9.6.1 and Table 14); 7) test temperature for the tensile test at elevated temperature (see 9.6.2.2); 8) verification of impact properties of austenitic steels at room temperature (see 8.5.1, 9.6.3 and Table 14); 9) verification of impact properties at low temperature (see 8.5.1, 9.6.3 and Table 14); 10) special requirements on surface quality (see 8.6); 11) verification of internal soundness (see 8.7 and Table 14); 12) verification of the hardness (see 9.6.4.2 and Table 14); 13) special marking requirements (see 10.2). 7.3 Example of ordering 10 t rounds of 50 mm diameter, dimensional tolerances as specified in EN 10060 made of the steel grade X5CrNi18-10 (1.4301) as specified in EN 10272 to process route 1D (see Table 6), inspection certificate 3.1 as specified in EN 10204: 10 t rounds EN 10060–50– steel EN 10272–X5CrNi18-10+1D–inspection certificate 3.1 or 10 t rounds EN 10060–50– steel EN 10272–1.4301+1D–inspection certificate 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 The products shall be supplied in the delivery condition specified in the order by reference to the process route given in Table 6 and, where different alternatives exist; to the treatment conditions given in Tables 7 to 9. Guidelines for further heat treatment are given in Annex A. 8.3 Chemical composition 8.3.1 The cast analysis reported by the steel producer shall apply and comply with the requirements of Tables 2 to 4. 8.3.2 The product analysis shall not deviate from the limiting values for the cast analysis as specified in Tables 2 to 4 by more than the values given in Table 5. SIST EN 10272:2016
EN 10272:2016 (E) 10 8.4 Corrosion resistance Referring to resistance to intergranular corrosion as defined in EN ISO 3651-2, for austenitic and austenitic-ferritic steels the specifications in Tables 8 and 9 apply. NOTE 1 EN ISO 3651-2 is not applicable for testing martensitic steels. NOTE 2 The corrosion resistance of stainless steels is strongly dependent on the type of environment and can therefore not always be clearly ascertained through laboratory tests. It is therefore advisable to draw on the available experience of the use of the steels. 8.5 Mechanical properties 8.5.1 The tensile properties at room temperature and the impact energy at 20 °C and at low temperatures as specified in Tables 7 to 9 apply for the relevant specified heat treatment condition. NOTE Austenitic steels are insensitive to brittle fracture in the solution annealed condition because they do not have a pronounced transition temperature, which is characteristic for other steels, they are also useful for application at cryogenic temperatures (see also the NOTE to Tables 8 and 9). 8.5.2 The values in Tables 10 to 12 apply for the 0,2 % and, Table 11 only, additionally for the 1,0 %-proof strength at elevated temperatures. For austenitic steels, the values given in Table 13 apply for the tensile strength at elevated temperatures. 8.5.3 Tensile strength values at elevated temperatures for austenitic-ferritic steels are given for guidance in Table B.1. 8.5.4 For creep rupture strength values of the grade X6CrNi25-20, see Table C.1. 8.6 Surface quality The surface quality shall be according to agreed surface finish in Table 6. Slight surface imperfections, inherent in the production process, are permitted. If more exact requirements for the surface quality are necessary, these shall be agreed at the time of enquiry and order, where appropriate, on the basis of EN 10221:1995. 8.7 Internal soundness The products shall be sound and free from defects that preclude their intended use. Where appropriate, requirements together with the conditions for their verification (see 9.6.4.5 and Table 14) may be agreed at the time of enquiry and order. 8.8 Weldability The choice of the appropriate welding method and parameters are under the responsibility of the equipment manufacturer. NOTE 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. 8.9 Physical properties Data concerning the physical properties of steels covered by this standard are stated in EN 10088-1:2014, Annex E. SIST EN 10272:2016
EN 10272:2016 (E) 11 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 and the extent of testing are specified in Table 14. 9.3 Frequency of testing The composition and size of test units and the number of samples and test pieces are specified in Table 14. 9.4 Re-tests, sorting and reprocessing For retests, sorting and reprocessing the requirements of EN 10021 shall apply. SIST EN 10272:2016
EN 10272:2016 (E) 12 9.5 Sampling and preparation of samples and test pieces 9.5.1 Sampling and sample preparation shall be in accordance with the requirements of EN ISO 14284 and EN ISO 377. In addition, the requirements in 9.5.2 shall apply to the mechanical tests. 9.5.2 The samples shall be taken in accordance with Figures 1 and 2 for the tensile test at room temperature, the impact test and the tensile test at elevated temperatures. 9.5.3 If, following agreement (see 8.2), the products are not to be delivered in a heat treated condition, the samples shall receive a simulated heat treatment prior to the test. 9.6 Test methods 9.6.1
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 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 documents is given in CEN/TR 10261. 9.6.2
Tensile test 9.6.2.1 The tensile test at room temperature shall be carried out as specified in EN ISO 6892-1:2009, generally using a proportional test piece of gauge length L0 = 5,65 oS (S0 = cross-sectional area of the test piece). The tensile strength, elongation after fracture and 0,2 % proof strength shall be determined and for austenitic steels additionally the 1,0 % proof strength. 9.6.2.2 The tensile test at elevated temperatures if agreed shall be carried as specified in EN ISO 6892-2:2011. If the tensile test at elevated temperatures is specified, the 0,2 %-proof strength shall be verified for ferritic and martensitic steels. For austenitic-ferritic steels, the 0,2 %-proof strength and the tensile strength shall be determined. In case of austenitic steels, the 0,2 %-proof strength, the 1,0 %-proof strength and the tensile strength shall be determined. Unless a test temperature for which values are specified has been agreed at the time of enquiry and order, the test shall be carried out 300 °C except for austenitic-ferritic steels for which the test shall be carried out at 250 °C. 9.6.3
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 average values of a set of three test pieces shall be equal to or greater than the specified value. One individual value may be below the specified value, provided that it is not less than 70 % of that value. If the above conditions are not satisfied then an additional set of three test pieces may be taken at the discretion of the manufacturer from the same sample and tested. To consider the test unit as conforming, after testing the second set, the following conditions shall be satisfied simultaneously: — average value of six test pieces shall be equal to or greater than the specified value; — not more than two of six individual values may be lower than the specified value; SIST EN 10272:2016
EN 10272:2016 (E) 13 — not more than one of the six individual values may be lower than 70 % of the specified value. If these requirements are not met the sample product is rejected and retests may 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: Table 1 — Sizes 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 reduced width are used (see Table 1), the minimum impact energy values given shall be reduced in proportion to the cross-sectional area of the test piece. 9.6.4
Other tests 9.6.4.1 If a test on the resistance to intergranular corrosion has been agreed, this shall be carried out in accordance with EN ISO 3651-2. 9.6.4.2 If a Brinell hardness test has been agreed, this shall be carried out in accordance with
EN ISO 6506-1. 9.6.4.3 Dimensions and dimensional tolerances of the products shall be tested in accordance with the requirements of the relevant dimensional standards, where available. 9.6.4.4 The surface condition of the products shall be checke
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