Steels for quenching and tempering for construction purposes - Technical delivery conditions

This document specifies the technical delivery requirements for
- bars (see NOTE 1);
- wide flats;
- hot-rolled strip and sheet/plate;
- forgings (see NOTE 1)
manufactured from the direct hardening non alloy steels for quenching and tempering and the direct hardening alloy steels for quenching and tempering and supplied in one of the heat treatment conditions given for the different types of products in table 1.
These steels are generally intended for the manufacture of quenched and tempered parts, but can also be used in the normalized condition.
The requirements for mechanical properties are restricted to part sizes given in tables 4 and 5.
NOTE 1   Hammer forged semi-finished products (blooms, billets, slabs etc.) and hammer forged bars are in the following covered under semi-finished products or bars and not under the term "forgings".
NOTE 2   In accordance with EN 10020, the steels covered by this standard are quality and special steels. The differences between quality and special steels are characterized by the following requirements, which are valid for special steels only:
- the minimum impact values in the quenched and tempered condition (for non alloy special steels in the case of mean percentages by mass of carbon < 0,50 % only);
- limited oxide inclusion content;
- lower maximum contents for phosphorus and sulphur.
NOTE 3   This standard does not apply for bright steel products and not for bars for cold heading and cold extrusion.
NOTE 4   This standard only applies for the manufacture of products without any further cold or hot formation and no additional heat treatment, i.e. the properties are according to the delivery condition (+N, +QT).
In addition to the specifications of this European Standard, the general technical delivery conditions given in EN 10021 are applicable unless otherwise specified.

Vergütungsstähle für das Bauwesen - Technische Lieferbedingungen

Dieses Dokument legt die allgemeinen technischen Lieferbedingungen für folgende Stahlerzeugnisse zur
Verwendung im Bauwesen fest:
- Stabstahl (einschließlich freiformgeschmiedetem Stabstahl);
- Breitflachstahl;
- warmgewalztes Blech und Band;
- Schmiedestücke.
Sie werden hergestellt aus unlegierten Vergütungsstählen und legierten Vergütungsstählen, welche in einem
der für die verschiedenen Erzeugnisformen in den entsprechend Tabelle 1 angegebenen Wärmebehandlungszuständen
geliefert werden.
Die Stähle sind im Allgemeinen zur Herstellung vergüteter Bauteile vorgesehen, die aber auch im
normalisierten Zustand verwendet werden.
Die Anforderungen an die angegebenen mechanischen Eigenschaften beschränken sich auf die in den
Tabellen 4 und 5 angegebenen Maße.
ANMERKUNG 1 Entsprechend EN 10020 handelt es sich bei den in dieser Norm enthaltenen Stählen um Qualitäts- und
Edelstähle. Die Edelstähle unterscheiden sich von den Qualitätsstählen durch:
- Mindestwerte der Kerbschlagarbeit im vergüteten Zustand (bei unlegierten Edelstählen nur bei mittleren
Masseanteilen an Kohlenstoff von < 0,50 %);
- begrenzter Gehalt an oxidischen Einschlüssen;
- niedrigere Höchstgehalte für Phosphor und Schwefel.
ANMERKUNG 2 Diese Norm gilt nicht für Blankstahlprodukte.
ANMERKUNG 3 Diese Norm ist nur auf Erzeugnisse anzuwenden, die nicht weiter kalt oder warm umgeformt werden
und keine zusätzliche Wärmebehandlung erfahren, d. h. deren Eigenschaften dem Lieferzustand +N oder +QT
entsprechen.
Zusätzlich zu den Anforderungen dieser Europäischen Norm gelten die allgemeinen technischen
Lieferbedingungen nach EN 10021, falls nichts anderes vereinbart wurde.

Aciers pour trempe et revenu pour usage de construction - Conditions techniques de livraison

La présente norme européenne spécifie les conditions techniques de livraison :
- des barres (incluant les barres forgées par martelage) ;
- des larges plats ;
- des bandes et tôles laminées à chaud ;
- des produits forgés.
Ils sont fabriqués en aciers non alliés ou alliés pour trempe et revenu, fournis dans l’un des états de traitement
thermique indiqués pour les différents types de produits au Tableau 1.
Ces aciers sont généralement destinés à la fabrication de pièces trempées et revenues mais peuvent
également être utilisés à l’état normalisé.
Les propriétés mécaniques exigées dans la présente norme européenne sont limitées aux dimensions
indiquées aux Tableaux 4 et 5.
NOTE 1 Conformément à l’EN 10020, la présente norme concerne les aciers de qualité et les aciers spéciaux. Les
aciers spéciaux se distinguent des aciers de qualité par :
- des valeurs minimales d’énergie de rupture à l’état trempé et revenu (uniquement pour les teneurs moyennes en
masse de carbone < 0,50 % pour les aciers spéciaux non alliés) ;
- une teneur limitée en inclusions d’oxyde ;
- des teneurs maximales plus faibles en phosphore et en soufre.
NOTE 2 La présente norme ne s’applique ni aux produits en acier transformés à froid.
NOTE 3 La présente norme s'applique uniquement à la fabrication de produits sans aucun autre formage à froid ou à
chaud ni aucun traitement supplémentaire, c’est-à-dire qu’elle définit les propriétés en fonction de la condition de livraison
(+N, +QT).
En plus des spécifications de la présente norme européenne, les conditions techniques générales de livraison
stipulées dans l’EN 10021 sont applicables, sauf indication contraire.

Konstrukcijska jekla za poboljšanje - Tehnični dobavni pogoji

General Information

Status
Published
Public Enquiry End Date
02-Mar-2006
Publication Date
06-May-2009
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
30-Mar-2009
Due Date
04-Jun-2009
Completion Date
07-May-2009

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vergütungsstähle für das Bauwesen - Technische LieferbedingungenAciers pour trempe et revenu pour usage de construction - Conditions techniques de livraisonSteels for quenching and tempering for construction purposes - Technical delivery conditions77.140.10Jekla za toplotno obdelavoHeat-treatable steelsICS:Ta slovenski standard je istoveten z:EN 10343:2009SIST EN 10343:2009en,fr,de01-junij-2009SIST EN 10343:2009SLOVENSKI

STANDARD
SIST EN 10343:2009

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 10343March 2009ICS 77.140.10 English VersionSteels for quenching and tempering for construction purposes -Technical delivery conditionsAciers pour trempe et revenu pour usage de construction -Conditions techniques de livraisonVergütungsstähle für das Bauwesen - TechnischeLieferbedingungenThis European Standard was approved by CEN on 14 February 2009.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:

Avenue Marnix 17,

B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 10343:2009: ESIST EN 10343:2009

EN 10343:2009 (E) 2 Contents Page Foreword ..............................................................................................................................................................3 1 Scope ......................................................................................................................................................4 2 Normative references ............................................................................................................................4 3 Terms and definitions ...........................................................................................................................5 4 Classification and designation .............................................................................................................6 5 Designation to be used on ordering ....................................................................................................6 6 Manufacturing process .........................................................................................................................7 7 Requirements .........................................................................................................................................8 8 Inspection ............................................................................................................................................ 10 9 Evaluation of conformity .................................................................................................................... 11 10 Preparation of samples and test pieces ........................................................................................... 14 11 Testing on compliance criteria .......................................................................................................... 15 12 Marking, labelling, packaging ............................................................................................................ 16 Annex A (normative)

Ruling sections for the mechanical properties ....................................................... 26 A.1 Terms and Definitions ........................................................................................................................ 26 A.2 Determination of the diameter of the equivalent ruling section .................................................... 26 Annex B (normative)

Dimensional standards applicable to products complying with this European Standard ............................................................................................................................. 28 Annex ZA (informative)

Relationship between this European Standard and the Essential Requirements of EU Directive 89/106/EEC, EU Construction Products Directive ....................... 29 ZA.1 Scope and relevant characteristics .................................................................................................. 29 ZA.2 Procedures for the attestation of conformity of structural metallic construction products ...... 30 ZA.3 CE marking and labelling ................................................................................................................... 32

SIST EN 10343:2009

EN 10343:2009 (E) 3 Foreword This document (EN 10343:2009) has been prepared by Technical Committee ECISS/TC 23 “Steels for heat treatment, alloy steels and free-cutting steels - Qualities and dimensions”, 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 September 2009, and conflicting national standards shall be withdrawn at the latest by December 2010. 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 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 Construction Products Directive (89/106/EEC). For relationship with EU Construction Products Directive (CPD), 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, 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.

SIST EN 10343:2009

EN 10343:2009 (E) 4 1 Scope This document specifies the technical delivery requirements for the following steel products intended for use in the construction industry: bars (including hammer-forged bars); wide flats; hot-rolled strip and sheet/plate; forgings.

They are manufactured from the direct hardening non alloy steels for quenching and tempering and the direct hardening alloy steels for quenching and tempering and supplied in one of the heat treatment conditions given for the different types of products in Table 1. These steels are generally intended for the manufacture of quenched and tempered parts, but can also be used in the normalized condition. The requirements for mechanical properties are restricted to part sizes given in Tables 4 and 5. NOTE 1 In accordance with EN 10020, the steels covered by this standard are quality and special steels. The differences between quality and special steels are characterized by the following requirements, which are valid for special steels only:  the minimum impact values in the quenched and tempered condition (for non alloy special steels in the case of mean percentages by mass of carbon < 0,50 % only);  limited oxide inclusion content;  lower maximum contents for phosphorus and sulphur. NOTE 2 This standard does not apply for bright steel products.

NOTE 3 This standard only applies for the manufacture of products without any further cold or hot forming and no additional heat treatment, i.e. the properties are according to the delivery condition (+N, +QT). In addition to the specifications of this European Standard, the general technical delivery conditions given in EN 10021 will be applicable unless otherwise specified. 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, Metallic materials - Tensile testing - Part 1: Method of test at ambient temperature

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 steel - Part 1: Steel names EN 10027-2, Designation systems for steel - Part 2: Numerical system SIST EN 10343:2009

EN 10343:2009 (E) 5 EN 10045-1, Metallic materials - Charpy impact test - Part 1: Test method EN 10052:1993, Vocabulary of heat treatment terms for ferrous products EN 10079:2007, Definition of steel products EN 10083-1:2006, Steels for quenching and tempering - Part 1: General technical delivery conditions EN 10083-2:2006, Steels for quenching and tempering - Part 2: Technical delivery conditions for non-alloy steels EN 10083-3:2006, Steels for quenching and tempering - Part 3: Technical delivery conditions for alloy steels EN 10160, Ultrasonic testing of steel flat product of thickness equal to or greater than 6 mm (reflection method) EN 10163-2, Delivery requirements for surface condition of hot-rolled steel plates, wide flats and sections - Part 2: Plates and wide flats EN 10204, Metallic products - Types of inspection documents EN 10221, Surface quality classes for hot-rolled bars and rods - Technical delivery conditions EN 10308, Non destructive testing – Ultrasonic testing of steel bars EN ISO 377:1997, Steel and steel products - Location and preparation of samples and test pieces for mechanical testing (ISO 377:1997) EN ISO 643, Steels – Micrographic determination of the apparent grain size (ISO 643:2003) EN ISO 3887, Steels – Determination of depth of decarburization (ISO 3887:2003). EN ISO 9001:2008, Quality management systems - Requirements (ISO 9001:2008) EN ISO 14284:2002, Steel and iron - Sampling and preparation of samples for the determination of chemical composition (ISO 14284:1996). CEN/TR 10261, Iron and steel - Review of available methods of chemical analysis 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply in addition to the terms and definitions given in EN 10020:2000, EN 10052:1993, EN 10079:2007, EN ISO 377:1997 and

EN ISO 14284:2002. 3.1 steels for quenching and tempering engineering steels which because of their chemical composition are suitable for hardening and in the quenched and tempered condition have good toughness at a given tensile strength 3.2 ruling section section for which the specified mechanical properties apply (see Annex A) NOTE Independent of the actual shape and dimensions of the cross-section of the product the size of its ruling section is always given by a diameter. This corresponds to the diameter of an "equivalent round bar". That is, a round bar which, at the position of its cross-section specified for taking the test pieces for the mechanical tests, will, when being SIST EN 10343:2009

EN 10343:2009 (E) 6 cooled from austenitizing temperature, show the same cooling rate as the actual ruling section of the product concerned at its position for taking the test pieces. 4 Classification and designation 4.1 Classification The classification of the relevant steel grades according to EN 10020 is used in this European Standard. 4.2 Designation 4.2.1 Steel names For the steel grades covered by this European Standard, the steel names as given in the relevant tables are allocated in accordance with EN 10027-1. 4.2.2 Steel numbers For the steel grades covered by this European Standard, the steel numbers as given in the relevant tables are allocated in accordance with EN 10027-2. 5 Designation to be used on ordering The manufacturer shall establish the following information from the purchaser at the time of enquiry and order: a) quantity to be delivered; b) designation of the product form (e.g. round bar, sheet or forging); c) number of the dimensional standard (e.g. EN 10060); d) dimensions and tolerances on dimensions and shape and, if applicable, letters denoting relevant special tolerances; e) number of this European Standard; f) steel name or steel number (see 4.2); g) heat treatment condition (+QT or +N, see 6.3.1); h) whether the purchaser wishes to specify following characteristics:

1) any particular surface condition (see 6.3.2) 2) any verification of the product analysis (see 7.1.2.2) 3) any fine grain requirements or verification of fine grain size (see 7.3.1); 4) any requirements for the verification of non-metallic inclusion content of special steels (see 7.3.2); 5) any requirement for internal soundness (see 7.4); 6) any requirement relating to surface quality (see 7.5.3); 7) any requirement regarding the permissible depth of decarburization for special steels (see 7.5.4); SIST EN 10343:2009

EN 10343:2009 (E) 7 8) any requirement relating to removal of surface defects (see 7.5.5); 9) any requirement concerning special marking of the products (see 12 and B.7 of EN 10083-1:2006); i) type of inspection certificate (3.1 or 3.2) in accordance with EN 10204, j) regulatory marking requirements (see Annex ZA). The requirements on ordering information in the European Standards for the relevant steels for quenching and tempering shall apply. If the order agreed between manufacturer and purchaser contains special requirements, which differ from those specified or referenced in this European Standard, then these special requirements shall apply in addition to the requirements in this European Standard, insofar as they do not conflict with the regulatory requirements of this European Standard. EXAMPLE 20 round bars with nominal diameter 20 mm and the nominal length of 8000 mm according to EN 10060 made of steel grade 25CrMo4 (1.7218) according to this standard in the heat treatment condition +QT, inspection certificate 3.1 as specified in EN 10204 and the declaration of conformity.

20 round bars EN 10060 - 20x8000 prEN 10343 – 25CrMo4+QT,
EN 10204 – 3.1, CE or 20 round bars EN 10060 - 20x8000 prEN 10343 – 1.7218+QT,

EN 10204 – 3.1, CE 6 Manufacturing process 6.1 General The manufacturing process of the steel and of the products shall be at the discretion of the manufacturer with the exceptions given by the requirements in 6.2 to 6.4. 6.2 Deoxidation All steels shall be killed. 6.3 Heat treatment and surface condition at delivery 6.3.1 Heat treatment condition The products shall be delivered in one of the heat-treatment conditions (+N or +QT) given in Table 1, lines 2 and 3. 6.3.2 Surface condition The products shall be delivered in the hot worked surface condition.

If so agreed at the time of enquiry and order products shall be delivered with one of the particular surface conditions given in Table 2, lines 3 to 7 of EN 10083-2:2006 or EN 10083-3:2006. SIST EN 10343:2009

EN 10343:2009 (E) 8 6.4 Cast separation The products shall be delivered separated by cast. 7 Requirements 7.1 Chemical composition and mechanical properties 7.1.1 General Table 1 gives the combinations of heat-treatment conditions at delivery, product forms and requirements as specified in Tables 4 and 5. 7.1.2 Chemical composition 7.1.2.1 The chemical composition determined by cast analysis shall comply with the values in Table 2. 7.1.2.2 If the product analysis is required (see B.6 of EN 10083-1:2006), permissible deviations between the limiting values for cast analysis and the values for product analysis shall be as in Table 3.

7.1.3 Weldability Steels according to this European standard are not always suitable to weld. Special welding procedures may be required.

7.1.4 Mechanical properties The mechanical property values given in Tables 4 and 5 apply to test pieces in the quenched and tempered or normalized condition which have been taken and prepared in accordance with Figure 1 or Figures 2 and 3. Using test pieces from quenched and tempered flat steel products of thickness less than 10 mm the minimum values for the impact strength given in Table 4 shall be reduced in direct proportion to the cross-sectional area of the test piece. Impact tests shall not be required for nominal thickness < 8 mm and nominal

diameter < 16 mm for quenched and tempered steels and not for nominal thickness and diameter < 16 mm for normalized steels. 7.2 Machinability Where improved machinability is required, the grades with a specified sulphur range should be ordered and /or with a specific treatment to improve machinability (e.g. Ca treatment). 7.3 Structure 7.3.1 For non-alloy steels, unless otherwise agreed at the time of enquiry and order, the grain size shall be left to the discretion of the manufacturer. If a fine grain structure is required in accordance with a reference treatment, special requirement A.3 of EN 10083-2:2006 shall apply. All alloy steels shall have an austenite grain size of 5 or finer, when tested in accordance with EN ISO 643. Regarding verification of fine grain size see A.3 of EN 10083-3:2006. 7.3.2 The special steels shall have a degree of cleanness corresponding to the special steel quality (see B.4 of EN 10083-1:2006). NOTE Segregation is the result of a natural phenomenon. Segregations can be found in ingots as well as slabs, blooms and billets from the continuous casting process. The positive segregation is a concentration of various elements at different locations in the ingot, slab, bloom and billet. In case of flat products customers should note, that these SIST EN 10343:2009

EN 10343:2009 (E) 9 segregations can occur parallel to the surface of the product. Especially for medium and high carbon contents segregations lead to a higher hardness and should be taken into consideration during further heat treatments. 7.4 Internal soundness Where appropriate, requirements relating to the internal soundness of products shall be agreed at the time of enquiry and order, if possible with reference to European standards. EN 10160 specifies requirements of ultrasonic testing of flat products of thickness equal to or greater than 6 mm and EN 10308 specifies requirements of ultrasonic testing of steel bars (see B.5 of EN 10083-1:2006). 7.5 Surface quality 7.5.1 All products shall have a smooth finish appropriate to the shaping processes applied. NOTE See also 6.3.2. 7.5.2 Minor surface imperfections which may occur also under normal manufacturing conditions, such as scores originating from rolled-in scale in the case of hot-rolled products, shall not be regarded as defects. 7.5.3 Where appropriate, requirements relating to the surface quality of the products shall be agreed on at the time of enquiry and order, if possible with reference to European Standards. Sheet/plate and wide flats are delivered with surface class A, subclass 2 according to EN 10163-2 unless otherwise agreed at the time of enquiry and order. Bars are delivered with surface class A according to EN 10221 unless otherwise agreed at the time of enquiry and order. 7.5.4 Requirements relating to the permissible depth of decarburization can be agreed at the time of enquiry and order for special steels. The depth of decarburization shall be determined in accordance with the micrographic method specified in

EN ISO 3887. 7.5.5 The removal of surface defects by welding shall only be permitted with the approval of the customer or his representative. If surface discontinuities are repaired, the method and maximum depth of removal shall be agreed at the time of enquiry and order. 7.6 Dimensions, tolerances on dimensions and shape Dimensions and tolerances on dimensions and shape shall be declared by reference to the appropriate European standard (see normative Annex B). Dimensions and tolerances on dimensions and shape of profiles not covered by European Standards shall be in accordance with a national standard valid in the intended place of use of the product or as agreed at the time of enquiry and order. If not agreed during enquiry and order for hot-rolled plates the tolerances on dimensions and shape are applicable according to EN 10029 included class A for the tolerances on thickness and for round bars normal tolerances are applicable according to EN 10060. SIST EN 10343:2009

EN 10343:2009 (E) 10 8 Inspection

8.1 Testing procedures and types of documents 8.1.1 Products declaring compliance with this European Standard shall be delivered with an inspection certificate 3.1 or 3.2 as specified in EN 10204. The type of certificate shall be agreed upon at the time of enquiry and order. If the order does not contain any specification of this type, inspection certificate 3.1 shall be issued.

The specific inspection described in 8.3, 10 and 11 shall be carried out and confirmed together with the following information in the inspection certificate: a) the manufacturer's results for the cast analysis of all elements specified in the Table 2 for the steel grade concerned; b) the results of inspections and tests ordered as a result of supplementary requirements (see Annex A of EN 10083-2 and EN 10083-3); c) the symbol letters or numbers relating the inspection certificate, test pieces and products to each other; d) the confirmation that the material complies with the requirements of the order; e) the regulatory information (see Annex ZA). 8.1.2 Unless otherwise agreed at the time of the order, inspection of surface condition and dimensions shall be carried out by the manufacturer (see also 6.3.2). 8.2 Frequency of testing 8.2.1 Sampling Sampling shall be in accordance with Table 6. 8.2.2 Test units The test units and the extent of testing shall be in accordance with Table 6. 8.3 Tests to be carried out for specific inspection 8.3.1 Verification of mechanical properties For steels the mechanical properties given for the relevant heat-treatment condition in Table 1, Column 6, subclause 2, shall be verified. 8.3.2 Visual and dimensional inspection The number of visual and dimensional inspections shall be done dependant of the kind of product to ensure compliance with the specification.

SIST EN 10343:2009

EN 10343:2009 (E) 11 9 Evaluation of conformity 9.1 General The conformity of a steel product to the requirements of this standard and with the stated values (including classes) shall be demonstrated by: a) initial type testing, b) factory production control by the manufacturer, including product assessment. For the purposes of testing, steel products may be grouped into families, where it is considered that the results for one or more characteristics from any one product within the family are representative for all steel products within that same family (a product may be in different families for different characteristics). NOTE The assignment of tasks is given in Table ZA.3. 9.2 Initial type testing 9.2.1 General An initial type test is the complete set of tests or other procedures, in respect of the characteristics to be assessed, determining the performance of samples of products representative of the product type. Initial type testing (see Table ZA.3) shall be performed to show conformity with this standard for a steel product being put onto the market and: a) at the beginning of the production of a new or modified steel product design, b) at the beginning of a new or modified method of production. In case of type testing of a steel product for which initial type testing in accordance with this standard was already performed, type testing may be reduced: a) if it has been established that the performance characteristics compared with the already tested steel products have not been affected or

b) in accordance with the rules for families and/or direct or extended application of test results. 9.2.2 Characteristics All characteristics of Clause 7 shall be subject to initial type testing, with following exceptions: a) Weldability is covered by chemical composition; b) Durability is covered by chemical composition; c) Fracture toughness is covered by impact strength, no additional test available; d) Cold formability is covered by elongation, no additional test available; e) Release of dangerous substances is covered by chemical composition. SIST EN 10343:2009

EN 10343:2009 (E) 12 9.2.3 Use of historical data Tests previously performed on the same steel product in accordance with the provisions of this standard (same characteristic(s), test method, sampling procedure, system of attestation of conformity, etc.) may be taken into account. 9.2.4 Sampling and testing

9.2.4.1 Sampling Initial type testing shall be performed on samples of steel products representative for the manufactured steel product type (see Clause 10). 9.2.4.2 Testing

lntensive testing shall be specific inspection and testing in accordance with Clause 11 carried out on the first five casts produced. However, for tensile and impact testing, at least 6 products from each of the five casts shall be tested and where this is not possible test pieces shall be taken from opposite ends of the products being tested. The results of all type tests shall be recorded and held by the manufacturer for at least 10 years after the date when the last product to which they apply was delivered. 9.3 Factory production control (FPC) 9.3.1 General The manufacturer shall establish, document and maintain an FPC system to ensure that the products placed on the market conform to the declared performance characteristics. The FPC system shall consist of written procedures (works' manual), regular inspections and tests and/or assessments and the use of the results to control raw and other incoming materials or components, equipment, the production process and the product. Records shall remain legible, readily identifiable and retrievable. An FPC system conforming with the requirements of EN ISO 9001, and made specific to the requirements of this standard, shall be considered to satisfy the above requirements. The results of inspections, tests or assessments requiring action shall be recorded, as shall any action taken. The action to be taken when control values or criteria are not met shall be recorded and retained for the period specified in the manufacturer’s FPC procedures. 9.3.2 FPC requirements for all manufacturers The manufacturer shall establish procedures to ensure that the production tolerances allow for the steel product performances to be in conformity with the declared values, derived from initial type testing. The characteristics, and the means of verification, are given in the Table 7. The manufacturer shall record the results of the tests specified above. These records shall at least include the following information: a) identification of the steel product tested, b) the date of sampling and testing, c) the test methods performed, SIST EN 10343:2009

EN 10343:2009 (E) 13 d) the test results. 9.3.3 Manufacturer-specific FPC system requirements 9.3.3.1 Personnel The responsibility, authority and the relationship between personnel that manage, perform or verify work affecting product conformity, shall be defined. This applies in particular to personnel that need to initiate actions preventing product non-conformities from occurring, actions in case of non-conformities and to identify and register product conformity problems. Personnel performing work affecting product conformity shall be competent on the basis of appropriate education, training, skills and experience for which records shall be maintained. 9.3.3.2 Equipment All weighing, measuring and testing equipment necessary to achieve, or produce evidence of, conformity shall be calibrated or verified and regularly inspected according to documented procedures, frequencies and criteria. Control of monitoring and measuring devices shall comply with the appropriate clause of EN ISO 9001. All equipment used in the manufacturing process shall be regularly inspected and maintained to ensure use, wear or failure does not cause inconsistency in the manufacturing process. Inspections and maintenance shall be carried out and recorded in accordance with the manufacturer’s written procedures and the records retained for the period defined in the manufacturer's FPC procedures. 9.3.3.3 Raw materials

The specifications of all incoming raw materials shall be documented, as shall the inspection scheme for ensuring their conformity. The verification of conformity of the raw material with the specification shall be in accordance with EN ISO 9001:2008, 7.4.3. 9.3.3.4 In-process control The manufacturer shall plan and carry out production under controlled conditions. Compliance with EN ISO 9001:2008, 7.5.1 and 7.5.2 shall be deemed to satisfy the requirements of this subclause. 9.3.3.5 Traceability and marking Individual steel products shall be identifiable and traceable with regard to their production origin. The manufacturer shall have written procedures ensuring that processes related to affixing traceability codes and/or markings (see Clause 12) are inspected regularly. Compliance with EN ISO 9001:2008, 7.5.3 shall be deemed to satisfy the requirements of this sub-clause. 9.3.3.6 Non-conforming products The

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